International Conferences

2024

S. Choi, E. Chung, G. C. Lim, T. Joung and J. -I. Ha, "10 kW Small-Gap Wireless Power Transfer System with Asymmetric Pads for Electric Vehicles," 2024 IEEE Wireless Power Technology Conference and Expo (WPTCE), Kyoto, Japan, 2024, pp. 28-31, doi: 10.1109/WPTCE59894.2024.10557379.

M. Kim, J. Kim, J. Shin, J. Shim and J. -I. Ha, "Voltage Injection-Based Fault Diagnosis for Power Devices with Multi-Module Neural Networks," 2024 IEEE 10th International Power Electronics and Motion Control Conference (IPEMC2024-ECCE Asia), Chengdu, China, 2024, pp. 4660-4665, doi: 10.1109/IPEMC-ECCEAsia60879.2024.10567341.

J. Lee, D. Lee, S. Lee and J. -I. Ha, "Direct Leakage Current Control Method of Single-Phase Non-Isolated EV Charger," 2024 IEEE 10th International Power Electronics and Motion Control Conference (IPEMC2024-ECCE Asia), Chengdu, China, 2024, pp. 5053-5058, doi: 10.1109/IPEMC-ECCEAsia60879.2024.10567233.

J. Lee, S. Choi, E. Chung and J. -I. Ha, "Design Method of Impedance Transformation Network for Robust Resonant Power Converters with Wide Load Impedance Variation," 2024 IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2024, pp. 101-106, doi: 10.1109/APEC48139.2024.10509146.

G. C. Lim, J. Yang, C. Hwang and J. -I. Ha, "Zero Sequence and Ground Current Analysis of Dual Source Open-End Winding PMSM Drive System," 2024 IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2024, pp. 575-580, doi: 10.1109/APEC48139.2024.10509161.

J. Yang, G. C. Lim, C. Hwang and J. -I. Ha, "Two-Phase Interleaved DC Charging Method of Integrated Charger for Efficiency Enhancement," 2024 IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2024, pp. 801-806, doi: 10.1109/APEC48139.2024.10509044.

C. Hwang, G. C. Lim, S. Lee, J. -J. Moon, K. -S. Park and J. -I. Ha, "Synchronous Overmodulation for Reduced Number of Switchings with Unit Voltage Gain Including Six-Step Operation," 2024 IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2024, pp. 122-127, doi: 10.1109/APEC48139.2024.10509358.

2023

J. Shim, S. Lee, D. Jeon and J. -I. Ha, "Static Friction Torque Estimation for Robot Manipulators Using a Data-Driven Approach," 2023 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED), Seoul, Korea, Republic of, 2023, pp. 1-5, doi: 10.1109/SLED57582.2023.10261391.

J. Shim, J. Choi, S. Lee and J. -I. Ha, "Multi-Channel Neural Networks-Based Thermal Monitoring of Electric Motor," 2023 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED), Seoul, Korea, Republic of, 2023, pp. 1-6, doi: 10.1109/SLED57582.2023.10261386.

B. R. Park, G. C. Lim, Y. Han and J. -I. Ha, "Hexa-Active Vector Pulse Width Modulation in IPMSM Sensorless Drives Using Single DC-Link Current Sensor," 2023 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED), Seoul, Korea, Republic of, 2023, pp. 1-7, doi: 10.1109/SLED57582.2023.10261368.

G. C. Lim, J. Lee, B. R. Park and J. -I. Ha, "Analysis of Pulse Width Modulation Methods for PMSM Sensorless Control Based on Current Derivative Measurement," 2023 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED), Seoul, Korea, Republic of, 2023, pp. 1-5, doi: 10.1109/SLED57582.2023.10261383.

G. -H. Min, H. Kwon, J. Lee and J. -I. Ha, "Virtually Isolated Class E Converter with Coupled Capacitors," 2023 IEEE Applied Power Electronics Conference and Exposition (APEC), Orlando, FL, USA, 2023, pp. 2124-2128, doi: 10.1109/APEC43580.2023.10131604.

J. Lee, B. R. Park, G. C. Lim and J. -I. Ha, "Hybrid Pulse Width Modulation with Current Derivative Measurement for PMSM Sensorless Control," 2023 IEEE Applied Power Electronics Conference and Exposition (APEC), Orlando, FL, USA, 2023, pp. 1090-1096, doi: 10.1109/APEC43580.2023.10131520.

B. R. Park, G. C. Lim, Y. Han, J. Lee and J. -I. Ha, "Saliency-Based Sensorless IPMSM Drives Using Derivatives of Phase Currents With Single DC-Link Current Sensor," 2023 IEEE Applied Power Electronics Conference and Exposition (APEC), Orlando, FL, USA, 2023, pp. 1402-1408, doi: 10.1109/APEC43580.2023.10131390.

H. Lee, J. Lee and J. -I. Ha, "Chattering Suppression of Sliding Mode Observer in Load Torque Estimation," 2023 IEEE Applied Power Electronics Conference and Exposition (APEC), Orlando, FL, USA, 2023, pp. 678-685, doi: 10.1109/APEC43580.2023.10131276.

2022

J. Lee and J. -I. Ha, "Active Reactance Control for Output Voltage Regulation in Wireless Power Transfer," 2022 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2022, pp. 1-5, doi: 10.1109/ECCE50734.2022.9948184.

J. Seo, Y. Lee and J. -I. Ha, "Diode Current Reduction Method of Three-Phase Boost PFC Converter with Semi-Bridgeless PFC Diode," 2022 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2022, pp. 1-5, https://ieeexplore.ieee.org/document/9948185doi: 10.1109/ECCE50734.2022.9948185.

S. Lee, C. Hwang, J. Shim and J. Ha, "A Control Method of Servo Motor Drives for Fast Dynamic Response and Low Torque Ripple," 2022 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2022, pp. 01-05, doi: 10.1109/ECCE50734.2022.9947638.

S. Choi, G. C. Lim, J. -S. Hong, E. Chung, G. Choe and J. -I. Ha, "Compensation Network Design Method for Capacitive Power Transfer System Considering Coupling Variation," 2022 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2022, pp. 1-6, doi: 10.1109/ECCE50734.2022.9947582.

J. Shim, B. R. Park, S. Choi and J. -I. Ha, "Learning-based Position Sensorless Control in Low-speed Region for SMPMSM," 2022 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2022, pp. 1-5, doi: 10.1109/ECCE50734.2022.9947561.

J. Shim, T. Joung, S. Lee and J. -I. Ha, "Audio Data-driven Anomaly Detection for Induction Motor Based on Generative Adversarial Networks," 2022 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2022, pp. 1-5, doi: 10.1109/ECCE50734.2022.9947652.

C. Hwang, G. C. Lim, J. Choi and J. -I. Ha, "Voltage Modulation Method for T-type Three-Level Inverter with Reduced Conduction Loss in Low Voltage Modulation Region," 2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia), Himeji, Japan, 2022, pp. 945-951, doi: 10.23919/IPEC-Himeji2022-ECCE53331.2022.9806877.

J. -S. Hong, S. Choi and J. -I. Ha, "A Modulation Method of Series-Resonant Dual-Active Half-Bridge Converter for ZVS and Minimum RMS current," 2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia), Himeji, Japan, 2022, pp. 1028-1035, doi: 10.23919/IPEC-Himeji2022-ECCE53331.2022.9807261.

J. Shim, G. C. Lim and J. -I. Ha, "Unsupervised Anomaly Detection for Electric Drives Based on Variational Auto-Encoder," 2022 IEEE Applied Power Electronics Conference and Exposition (APEC), Houston, TX, USA, 2022, pp. 1703-1708, doi: 10.1109/APEC43599.2022.9773565.

J. Lee, G. C. Lim and J. -I. Ha, "One-Digital-Sampling Commutation Method for Low Inductance Brushless DC Motor," 2022 IEEE Applied Power Electronics Conference and Exposition (APEC), Houston, TX, USA, 2022, pp. 01-07, doi: 10.1109/APEC43599.2022.9773603.

2021

S. Choi, J. -S. Hong and J. -I. Ha, "Phase Control using Network Node Voltage Feedback for Capacitor-Coupled Dual Active Bridge DC-DC Converters," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), Vancouver, BC, Canada, 2021, pp. 3033-3038, doi: 10.1109/ECCE47101.2021.9595864.

J. Lee and J. -I. Ha, "Design and analysis of resonant inverter for a wide range of input voltage," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), Vancouver, BC, Canada, 2021, pp. 2336-2342, doi: 10.1109/ECCE47101.2021.9595476.

G. Noh, G. C. Lim and J. -I. Ha, "Analysis of Synchronous-Rectification Switch Control for Active Class-E Rectifier," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), Vancouver, BC, Canada, 2021, pp. 2059-2066, doi: 10.1109/ECCE47101.2021.9595063.

B. R. Park, G. C. Lim, J. Choi, C. Hwang and J. -I. Ha, "Torque Ripple Minimization of PMSM Drive with Speed Ripple Feedback Considering Non-linearities of PMSM," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), Vancouver, BC, Canada, 2021, pp. 4948-4954, doi: 10.1109/ECCE47101.2021.9595926.

J. -h. Shim, J. Lee and J. -I. Ha, "Current-Sensor and Switch-Open Fault Diagnosis Based on Discriminative Machine Learning Model for PMSM Driving System," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), Vancouver, BC, Canada, 2021, pp. 5098-5104, doi: 10.1109/ECCE47101.2021.9595123.

G. C. Lim, G. Noh and J. -I. Ha, "Analysis and Control of Synchronous Rectification for MHz Class-E Resonant Rectifier with Load Variation," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), Vancouver, BC, Canada, 2021, pp. 3275-3281, doi: 10.1109/ECCE47101.2021.9595602.

G. C. Lim, G. Noh, J. Choi, J. -H. Shim, H. -G. Choi and J. -I. Ha, "Two-Phase Commutation Control Method of Open-End Winding PMSM with Reduced Loss for Low Torque Operation," 2021 IEEE Applied Power Electronics Conference and Exposition (APEC), Phoenix, AZ, USA, 2021, pp. 2147-2153, doi: 10.1109/APEC42165.2021.9487257.

S. Lee, G. Noh and J. -I. Ha, "Reconfigurable Multi-cell Battery Pack for Portable Electronic Devices with the Capability of Simultaneous Charging and Discharging," 2021 IEEE Applied Power Electronics Conference and Exposition (APEC), Phoenix, AZ, USA, 2021, pp. 2818-2824, doi: 10.1109/APEC42165.2021.9487069.

J. -H. Shim, K. Lee and J. -I. Ha, "Fault Diagnosis of Inverter Current Sensor Using Artificial Neural Network Considering Out-of-distribution," 2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia), Singapore, Singapore, 2021, pp. 1520-1525, doi: 10.1109/ECCE-Asia49820.2021.9479085.

S. Lee, G. Noh and J. -I. Ha, "Efficient and Reconfigurable Multi-cell Battery Pack for Portable Electronic Devices with Simultaneous Charging and Discharging Capability," 2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia), Singapore, Singapore, 2021, pp. 1021-1026, doi: 10.1109/ECCE-Asia49820.2021.9479094.

2020

J. Mace, G. Noh and J. -I. Ha, "Modeling and Design of Switched-Capacitor Converters for Voltage Stacking," 2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia), Nanjing, China, 2020, pp. 503-510, doi: 10.1109/IPEMC-ECCEAsia48364.2020.9367863.

J. -h. Shim, H. -g. Choi and J. -I. Ha, "Zero-Sequence Current Suppression with Dead-Time Compensation Control in Open-End Winding PMSM," 2020 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2020, pp. 3051-3056, doi: 10.1109/ECCE44975.2020.9236316.

Z. Yi, K. Sun, S. Lu, G. Cao, Y. Li and J. -I. Ha, "High-Precision Simulation for Structure and Efficiency Optimization of High-Power High-Frequency Transformer," 2020 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2020, pp. 3524-3531, doi: 10.1109/ECCE44975.2020.9235992.

M. Sung, G. -H. Min and J. -I. Ha, "Dual Side Control of Wireless Power Transfer with Mutual Inductance Estimation," 2020 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2020, pp. 1528-1533, doi: 10.1109/ECCE44975.2020.9235933.

J. Choi, G. C. Lim and J. -I. Ha, "Si-IGBT / SiC-MOSFET Hybrid Inverter Control Method for Reduced Loss and Switching Ripple," 2020 IEEE Applied Power Electronics Conference and Exposition (APEC), New Orleans, LA, USA, 2020, pp. 1183-1188, doi: 10.1109/APEC39645.2020.9124274.

G. Noh and J. -I. Ha, "High Reliable Power Conversion System with Active Battery Balancing Capability," 2020 IEEE Applied Power Electronics Conference and Exposition (APEC), New Orleans, LA, USA, 2020, pp. 3358-3363, doi: 10.1109/APEC39645.2020.9124507.

G. -H. Min and J. -I. Ha, "Flyback Converter Control by Inner Supply Voltage Feedback Using Sigma-Delta Converter," 2020 IEEE Applied Power Electronics Conference and Exposition (APEC), New Orleans, LA, USA, 2020, pp. 2992-2996, doi: 10.1109/APEC39645.2020.9124445.

J. -S. Hong and J. -I. Ha, "Transformer-less Series-Input-Parallel-Output Dual Active Half-Bridge for MV-LV DC/DC Converter," 2020 IEEE Applied Power Electronics Conference and Exposition (APEC), New Orleans, LA, USA, 2020, pp. 1061-1066, doi: 10.1109/APEC39645.2020.9124334.

2019

G. Noh, J. Lee and J. -I. Ha, "Step-Up Converter with High Order Selectivity," 2019 IEEE Applied Power Electronics Conference and Exposition (APEC), Anaheim, CA, USA, 2019, pp. 1289-1294, doi: 10.1109/APEC.2019.8722009.

K. Lee and J. -I. Ha, "Power Capability Improvement of Interior Permanent Magnet Synchronous Motor Drives Using Capacitive Network," 2019 IEEE Applied Power Electronics Conference and Exposition (APEC), Anaheim, CA, USA, 2019, pp. 2597-2602, doi: 10.1109/APEC.2019.8722103.

J. Lee and J. -I. Ha, "On-Line Switch-Open Fault Detection of PMSM Using Artificial Neural Network," 2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia), Busan, Korea (South), 2019, pp. 1-6, doi: 10.23919/ICPE2019-ECCEAsia42246.2019.8797320.

J. Park, H. -G. Choi, M. Sung and J. -I. Ha, "Design and Implementation of Bi-directional Inductive Wireless Power Transfer for Elevator System," 2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia), Busan, Korea (South), 2019, pp. 2246-2251, doi: 10.23919/ICPE2019-ECCEAsia42246.2019.8797012.

S. Lu, K. Sun, G. Cao, Y. Li, J. -I. Ha and G. -H. Min, "A High Step-Up Modular Isolated DC-DC Converter for Large Capacity Photovoltaic Generation System Integrated into MVDC Grids," 2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia), Busan, Korea (South), 2019, pp. 1915-1920, doi: 10.23919/ICPE2019-ECCEAsia42246.2019.8797333.

G. Noh and J. -I. Ha, "Analysis and Design of Four-Level Flying-Capacitor Converter in Burst Mode Operation," 2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia), Busan, Korea (South), 2019, pp. 3129-3134, doi: 10.23919/ICPE2019-ECCEAsia42246.2019.8797034.

G. C. Lim, H. -G. Choi and J. -I. Ha, "Single Phase Commutation Control of Open-End Winding PMSM Fed by Single DC-Link Dual Inverter," 2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia), Busan, Korea (South), 2019, pp. 2532-2537, doi: 10.23919/ICPE2019-ECCEAsia42246.2019.8797190.

H. -G. Choi and J. -I. Ha, "Operating Area Extension of Surface Mounted Permanent Magnet Motor by LC Network," 2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia), Busan, Korea (South), 2019, pp. 1-6, doi: 10.23919/ICPE2019-ECCEAsia42246.2019.8796911.

G. Cheol Lim, H. -G. Choi, J. Choi and J. -I. Ha, "Efficiency Improvement of PMSM Drive System Using Discontinuous Current Control Method at Low Torque Region," 2019 IEEE Transportation Electrification Conference and Expo (ITEC), Detroit, MI, USA, 2019, pp. 1-6, doi: 10.1109/ITEC.2019.8790515.

J. Choi, J. Lee and J. -I. Ha, "Stator Temperature Estimation of PMSM Based on Thermal Equivalent Circuit," 2019 22nd International Conference on Electrical Machines and Systems (ICEMS), Harbin, China, 2019, pp. 1-4, doi: 10.1109/ICEMS.2019.8922306.

H. -g. Choi and J. -I. Ha, "Design Method of Capacitor Network for Interior Permanent Magnet Synchronous Machine Drive," 2019 22nd International Conference on Electrical Machines and Systems (ICEMS), Harbin, China, 2019, pp. 1-5, doi: 10.1109/ICEMS.2019.8921691.

E. Chung and J. -I. Ha, "Resonant network design methodology based on two-port network analysis considering load impedance variation," 2019 IEEE Energy Conversion Congress and Exposition (ECCE), Baltimore, MD, USA, 2019, pp. 2178-2183, doi: 10.1109/ECCE.2019.8912491.

J. -S. Hong and J. -I. Ha, "Common mode current minimization of Capacitor-Coupled Dual-Active-Bridge for SIPO MVDC-LVDC Distribution Converter," IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society, Lisbon, Portugal, 2019, pp. 5733-5738, doi: 10.1109/IECON.2019.8927791.

2018

S. Kwon and J. Ha, "Fault-tolerant operation with 1-phase open in parallel-connected motor," 2018 IEEE Applied Power Electronics Conference and Exposition (APEC), San Antonio, TX, USA, 2018, pp. 2637-2641, doi: 10.1109/APEC.2018.8341389.

J. Lee and J. -I. Ha, "Doubly-fed machine with wireless power transfer ability," 2018 IEEE Applied Power Electronics Conference and Exposition (APEC), San Antonio, TX, USA, 2018, pp. 3550-3555, doi: 10.1109/APEC.2018.8341616.

E. Chung, G. C. Lim, J. -I. Ha and D. J. Perreault, "Resonant Converter Design Using Two-Port Passive Network: Single Frequency Design," 2018 IEEE 19th Workshop on Control and Modeling for Power Electronics (COMPEL), Padua, Italy, 2018, pp. 1-7, doi: 10.1109/COMPEL.2018.8459919.

J. Lee and J. -I. Ha, "Wirelessly Powered Coil-Type Robot with 2D Translational and 1D Rotational Self-Actuation Ability," 2018 15th International Conference on Ubiquitous Robots (UR), Honolulu, HI, USA, 2018, pp. 214-219, doi: 10.1109/URAI.2018.8441762.

J. -S. Hong and J. -I. Ha, "Current Reference Projection Method for Securing Micro-Robot Control Bandwidth Under Voltage Limit Condition," 2018 International Conference on Manipulation, Automation and Robotics at Small Scales (MARSS), Nagoya, Japan, 2018, pp. 1-6, doi: 10.1109/MARSS.2018.8481183.

J. Park and J. -I. Ha, "Variable Time Step Control for Six-Step Operation in IPMM," 2018 IEEE Transportation Electrification Conference and Expo (ITEC), Long Beach, CA, USA, 2018, pp. 863-867, doi: 10.1109/ITEC.2018.8450222.

H. -g. Choi, J. -s. Hong and J. -I. Ha, "Synchronous Space Vector Voltage Modulation of Three-phase Inverter with Low Switching Number," 2018 IEEE Transportation Electrification Conference and Expo (ITEC), Long Beach, CA, USA, 2018, pp. 436-441, doi: 10.1109/ITEC.2018.8449960.

G. -H. Min, K. -H. Lee, J. -I. Ha and M. H. Kim, "Design and Control of Single-Phase Grid-Connected Photovoltaic Microinverter with Reactive Power Support Capability," 2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia), Niigata, Japan, 2018, pp. 2500-2504, doi: 10.23919/IPEC.2018.8507578.

C. Lee and J. -I. Ha, "Variable Switching Frequency Strategy for Enhanced Settling Performance of Position Control within Inverter Loss Limit," 2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia), Niigata, Japan, 2018, pp. 565-570, doi: 10.23919/IPEC.2018.8507584.

J. Lee and J. -I. Ha, "Harmonic Torque Reduction Using Adaptive Sector-Based Torque Feedforward Method for PMSM," 2018 IEEE Energy Conversion Congress and Exposition (ECCE), Portland, OR, USA, 2018, pp. 5473-5478, doi: 10.1109/ECCE.2018.8558344.

H. -g. Choi and J. -I. Ha, "Design and Control Method for Synchronous Permanent Magnet Motor Drive System with Series Capacitor," 2018 IEEE Energy Conversion Congress and Exposition (ECCE), Portland, OR, USA, 2018, pp. 4406-4410, doi: 10.1109/ECCE.2018.8557409.

K. Lee and J. -I. Ha, "Single-Phase Inverter Scheme for Permanent Magnet Synchronous Motor Drive with Resonant Capacitor," 2018 IEEE Energy Conversion Congress and Exposition (ECCE), Portland, OR, USA, 2018, pp. 6960-6966, doi: 10.1109/ECCE.2018.8557782.

J. -S. Hong and J. -I. Ha, "Control Area Expansion Using Null Space Vector Injection Under Current Limit in Magnetic Manipulation System," 2018 IEEE Energy Conversion Congress and Exposition (ECCE), Portland, OR, USA, 2018, pp. 6621-6626, doi: 10.1109/ECCE.2018.8558181.

2017

K. Lee and J. -I. Ha, "Dynamic decoupling control method for PMSM drive with cross-coupling inductances," 2017 IEEE Applied Power Electronics Conference and Exposition (APEC), Tampa, FL, USA, 2017, pp. 563-569, doi: 10.1109/APEC.2017.7930750.

K. -H. Lee and J. -I. Ha, "Analysis and design of resonant rectifier for high-frequency dc-dc converters," 2017 IEEE Applied Power Electronics Conference and Exposition (APEC), Tampa, FL, USA, 2017, pp. 2475-2480, doi: 10.1109/APEC.2017.7931046.

J. Lee and J. -I. Ha, "On-line position and attitude estimation for magnetic manipulation system," 2017 14th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI), Jeju, Korea (South), 2017, pp. 616-621, doi: 10.1109/URAI.2017.7992685.

G. -H. Min and J. -I. Ha, "Inner supply data transmission of resonant flyback converters using multiplexing mode in battery chargers application," 2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL), Stanford, CA, USA, 2017, pp. 1-5, doi: 10.1109/COMPEL.2017.8013286.

G. -H. Min and J. -I. Ha, "Active cell balancing algorithm for serially connected li-ion batteries based on power to energy ratio," 2017 IEEE Energy Conversion Congress and Exposition (ECCE), Cincinnati, OH, USA, 2017, pp. 2748-2753, doi: 10.1109/ECCE.2017.8096514.

E. Chung, G. C. Lim, J. -I. Ha and K. Y. Kim, "Output voltage control for series-series compensated wireless power transfer system without direct feedback from measurement or communication," 2017 IEEE Energy Conversion Congress and Exposition (ECCE), Cincinnati, OH, USA, 2017, pp. 4035-4040, doi: 10.1109/ECCE.2017.8096704.

K. Lee, J. -I. Ha and D. Simili, "Decoupled current control with novel anti-windup for PMSM drives," 2017 IEEE Energy Conversion Congress and Exposition (ECCE), Cincinnati, OH, USA, 2017, pp. 1183-1190, doi: 10.1109/ECCE.2017.8095923.

J. Lee and J. -I. Ha, "Wirelessly Powered Coil-Type Robot with 1D Self-Actuation Capability," 2017 IEEE Energy Conversion Congress and Exposition (ECCE), Cincinnati, OH, USA, 2017, pp. 2382-2388, doi: 10.1109/ECCE.2017.8096461.

2016

Y. Lee and J. -I. Ha, "Nonlinearity analysis and linear modulation method for two level voltage source inverter with low switching to operating frequency ratio," 2016 IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2016, pp. 193-198, doi: 10.1109/APEC.2016.7467872.

J. -W. Kim and J. -I. Ha, "Dual voltage regulations of single switch flyback converter using variable switching frequency," 2016 IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2016, pp. 1398-1402, doi: 10.1109/APEC.2016.7468051.

Y. -H. Chae and J. -I. Ha, "Motor current reference generation for reducing motor currents in drive systems with single-phase diode rectifier and small dc-link capacitor," 2016 IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2016, pp. 2801-2805, doi: 10.1109/APEC.2016.7468261.

Y. Son and J. -I. Ha, "Data transmission method without additional circuits in bidirectional wireless power transfer system," 2016 IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2016, pp. 3717-3721, doi: 10.1109/APEC.2016.7468405.

G. -S. Seo, J. -I. Ha, B. -H. Cho and K. -C. Lee, "Series arc fault detection method based on statistical analysis for dc Microgrids," 2016 IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2016, pp. 487-492, doi: 10.1109/APEC.2016.7467916.

K. Lee, Young-Kwang Son and Jung-Ik Ha, "Model-based MTPA control of permanent magnet synchronous machine drives under one-phase open-circuit fault," 2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia), Hefei, China, 2016, pp. 1847-1853, doi: 10.1109/IPEMC.2016.7512575.

Sungho Jung, Jaeyong Park and Jung-Ik Ha, "Variable time step control with synchronous PWM in flux weakening region of PMSM," 2016 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC Asia-Pacific), Busan, Korea (South), 2016, pp. 364-369, doi: 10.1109/ITEC-AP.2016.7512979.

S. Jung, J. Park, E. Chung and J. -I. Ha, "Variable time step control with synchronous PWM in low frequency modulation index for AC machine drive," 2016 IEEE Energy Conversion Congress and Exposition (ECCE), Milwaukee, WI, USA, 2016, pp. 1-8, doi: 10.1109/ECCE.2016.7855552.

Y. Cho, Y. Han, R. B. Beddingfield, J. -I. Ha and S. Bhattacharya, "Seamless black start and reconnection of LCL-filtered solid state transformer based on droop control," 2016 IEEE Energy Conversion Congress and Exposition (ECCE), Milwaukee, WI, USA, 2016, pp. 1-7, doi: 10.1109/ECCE.2016.7855416.

Y. Cho, Yongsu Han, S. Madhusoodhanan, Jung-Ik Ha and S. Bhattacharya, "Synchronous frame full-order observer design for three-phase buck-type PWM rectifier," IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, Florence, Italy, 2016, pp. 3618-3622, doi: 10.1109/IECON.2016.7794059.

2015

Y. Han and J. -I. Ha, "Copper loss minimizing control of Doubly Fed Wound Machine," 2015 IEEE Applied Power Electronics Conference and Exposition (APEC), Charlotte, NC, USA, 2015, pp. 549-556, doi: 10.1109/APEC.2015.7104403.

H. Shin, H. -G. Choi and J. -I. Ha, "DC-link shunt compensator for three-phase system with small DC-link capacitor," 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia), Seoul, Korea (South), 2015, pp. 33-39, doi: 10.1109/ICPE.2015.7167763.

Y. Lee and J. -I. Ha, "Analysis of parameter variations on mono inverter dual parallel SPMSM drive system," 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia), Seoul, Korea (South), 2015, pp. 1875-1880, doi: 10.1109/ICPE.2015.7168034.

J. Park, S. Jung and J. -I. Ha, "Variable time step control for six-step operation in SMPMSM," 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia), Seoul, Korea (South), 2015, pp. 328-333, doi: 10.1109/ICPE.2015.7167805.

J. -W. Kim and J. -I. Ha, "Enhancement of parameter estimation accuracy using current shaping in PM machine drive," 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia), Seoul, Korea (South), 2015, pp. 2123-2128, doi: 10.1109/ICPE.2015.7168071.

Y. Son and J. -I. Ha, "The Electric Variable Transmission without slip ring for the Hybrid Electric Vehicle driving structure," 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia), Seoul, Korea (South), 2015, pp. 857-862, doi: 10.1109/ICPE.2015.7167882.

S. Jung and J. -I. Ha, "Low voltage modulation method in six-step operation of three phase inverter," 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia), Seoul, Korea (South), 2015, pp. 605-610, doi: 10.1109/ICPE.2015.7167846.

Y. Han, K. -H. Lee, E. Chung and J. -I. Ha, "Output impedance network based design in 10MHz isolated DC-DC converter of Class Φ2," 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia), Seoul, Korea (South), 2015, pp. 2656-2662, doi: 10.1109/ICPE.2015.7168197.

H. Shin, H. -G. Choi, Y. Chae and J. -I. Ha, "Partial power assistance operation for single-phase grid-fed motor drive system with DC-link shunt compensator," 2015 IEEE Energy Conversion Congress and Exposition (ECCE), Montreal, QC, Canada, 2015, pp. 676-681, doi: 10.1109/ECCE.2015.7309754.

J. Park, S. Jung and J. -I. Ha, "Phase current reconstruction with single DC-link current sensor for six-step operation in three phase inverter," 2015 IEEE Energy Conversion Congress and Exposition (ECCE), Montreal, QC, Canada, 2015, pp. 906-912, doi: 10.1109/ECCE.2015.7309784.

K. -H. Lee, E. Chung, Y. Han and J. -I. Ha, "Design and control of 10-MHz classs E DC-DC converter with reduced voltage stress," 2015 IEEE Energy Conversion Congress and Exposition (ECCE), Montreal, QC, Canada, 2015, pp. 4257-4263, doi: 10.1109/ECCE.2015.7310261.

Y. Lee and J. -I. Ha, "Control method for mono inverter dual parallel interior permanent magnet synchronous machine drive system," 2015 IEEE Energy Conversion Congress and Exposition (ECCE), Montreal, QC, Canada, 2015, pp. 5256-5262, doi: 10.1109/ECCE.2015.7310399.

K. Lee and J. -I. Ha, "Single-phase stator control of interior permanent magnet machines with MTPA operation," 2015 IEEE Energy Conversion Congress and Exposition (ECCE), Montreal, QC, Canada, 2015, pp. 5263-5270, doi: 10.1109/ECCE.2015.7310400.

E. Chung, K. -H. Lee, Y. Han and J. -I. Ha, "Design of single switch DC-DC converter with parasitic parameters," 2015 IEEE Energy Conversion Congress and Exposition (ECCE), Montreal, QC, Canada, 2015, pp. 1455-1460, doi: 10.1109/ECCE.2015.7309864.

2014

J. -J. Jung, H. -J. Lee, J. -I. Ha and S. -K. Sul, "Reduced sampling rate for cell voltage sensing in high-level Modular Multilevel Converter," 2014 IEEE International Conference on Industrial Technology (ICIT), Busan, Korea (South), 2014, pp. 336-341, doi: 10.1109/ICIT.2014.6894889.

K. Hyung, H. Shin, J. -I. Ha and A. Yoo, "Efficiency control of multi-string PV system considering switching losses analysis," 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014, Fort Worth, TX, USA, 2014, pp. 3143-3149, doi: 10.1109/APEC.2014.6803754.

Y. Kim and J. -I. Ha, "Novel topology and control of single inverter system for two permanent magnet synchronous machines," 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014, Fort Worth, TX, USA, 2014, pp. 833-837, doi: 10.1109/APEC.2014.6803404.

H. Shin and J. -I. Ha, "Individual MPPTs of single-phase three-level split DC-bus inverter," 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014, Fort Worth, TX, USA, 2014, pp. 669-675, doi: 10.1109/APEC.2014.6803380.

S. Jung and J. -I. Ha, "Design and analysis of analog filtering method for signal injection based sensorless control," 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014, Fort Worth, TX, USA, 2014, pp. 1573-1578, doi: 10.1109/APEC.2014.6803516.

K. Lee, Y. Han and J. -I. Ha, "Dynamic model and control of wound-rotor machine in single-phase grid system," 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014, Fort Worth, TX, USA, 2014, pp. 2719-2726, doi: 10.1109/APEC.2014.6803689.

K. -H. Lee, Y. Lee and J. -I. Ha, "New current control strategy for local converter under distorted grid conditions," 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014, Fort Worth, TX, USA, 2014, pp. 978-982, doi: 10.1109/APEC.2014.6803426.

Y. Son and J. -I. Ha, "Grid current shaping of single phase diode rectifier with small DC-link capacitor for three phase motor drive," 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014, Fort Worth, TX, USA, 2014, pp. 2253-2258, doi: 10.1109/APEC.2014.6803617.

J. -W. Kim and J. -I. Ha, "Cell balancing control of single switch flyback converter using generalized filters," 2014 IEEE Applied Power Electronics Conference and Exposition - APEC 2014, Fort Worth, TX, USA, 2014, pp. 3273-3277, doi: 10.1109/APEC.2014.6803775.

Yongjae Lee and J. -I. Ha, "Minimization of stator currents for mono inverter dual parallel PMSM drive system," 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA), Hiroshima, 2014, pp. 3140-3144, doi: 10.1109/IPEC.2014.6870134.

Kahyun Lee and Jung-Ik Ha, "Minimum copper loss control of doubly-fed induction generator for wind turbines," 2014 IEEE Symposium on Power Electronics and Machines for Wind and Water Applications, Milwaukee, WI, USA, 2014, pp. 1-6, doi: 10.1109/PEMWA.2014.6912228.

J. -W. Kim and J. -I. Ha, "Enhancement of output voltage using current shaping in sensorless AC machine drive," 2014 IEEE Energy Conversion Congress and Exposition (ECCE), Pittsburgh, PA, USA, 2014, pp. 2490-2494, doi: 10.1109/ECCE.2014.6953572.

Y. Son and J. -I. Ha, "Efficiency improvement in motor drive system with single phase diode rectifier and small DC-link capacitor," 2014 IEEE Energy Conversion Congress and Exposition (ECCE), Pittsburgh, PA, USA, 2014, pp. 3171-3178, doi: 10.1109/ECCE.2014.6953831.

Y. Lee and J. -I. Ha, "Analysis and control of mono inverter dual parallel SPMSM drive system," 2014 IEEE Energy Conversion Congress and Exposition (ECCE), Pittsburgh, PA, USA, 2014, pp. 4843-4849, doi: 10.1109/ECCE.2014.6954065.

S. Jung and J. -I. Ha, "Carrier signal injection method in three shunt sensing inverter for sensorless AC machine drive," 2014 IEEE Energy Conversion Congress and Exposition (ECCE), Pittsburgh, PA, USA, 2014, pp. 4154-4161, doi: 10.1109/ECCE.2014.6953967.

H. Shin and J. -I. Ha, "Critical modulation method based on PWAM in back-to-back three-phase system," 2014 IEEE Energy Conversion Congress and Exposition (ECCE), Pittsburgh, PA, USA, 2014, pp. 5451-5457, doi: 10.1109/ECCE.2014.6954148.

K. Lee, Y. Han and J. -I. Ha, "Minimum copper loss control of a single-phase grid-connected wound rotor machine over full speed range," 2014 IEEE Energy Conversion Congress and Exposition (ECCE), Pittsburgh, PA, USA, 2014, pp. 5821-5827, doi: 10.1109/ECCE.2014.6954200.

Lee, Kyung-Hwan and Jung-Ik Ha. “Control strategy for three-phase converter under unbalanced grid voltage conditions considering line loss.” 2014 IEEE Energy Conversion Congress and Exposition (ECCE) (2014): 5790-5796.

E. Chung, J. Lee and J. -I. Ha, "System conditions monitoring method for a wireless cellular phone charger," 2014 International Power Electronics and Application Conference and Exposition, Shanghai, China, 2014, pp. 639-643, doi: 10.1109/PEAC.2014.7037932.

H. Shin and J. -I. Ha, "Active DC-link circuit for single-phase diode rectifier system with small capacitance," 2014 International Power Electronics and Application Conference and Exposition, Shanghai, China, 2014, pp. 875-880, doi: 10.1109/PEAC.2014.7037974.

2013

Hojoon Shin and Jung-Ik Ha, "Analysis of Two-Leg Three-Phase Transformer-Less PV Inverter with Corner Grounded Source", Applied Power Electronics Conference and Exposition (APEC), 2013 Twenty-Eighth Annual IEEE, DOI: 10.1109/APEC.2013.6520708.

J. -W. Shin, H. Shin, J. -I. Ha and B. -H. Cho, "A low-common mode noise and high-efficiency buck-buck-boost inverter," 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2013, pp. 2259-2265, doi: 10.1109/APEC.2013.6520610.

Y. Lee and J. -I. Ha, "Power enhancement of dual inverter for open-end permanent magnet synchronous motor," 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2013, pp. 1545-1551, doi: 10.1109/APEC.2013.6520502.

Y. Han and J. -I. Ha, "A doubly-fed induction machine and the control in a single-phase grid connection," 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2013, pp. 1514-1521, doi: 10.1109/APEC.2013.6520498.

W. -J. Lee and J. -I. Ha, "Individual MPPTs of dual photovoltaic arrays using single-phase split-dc bus inverter," 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2013, pp. 116-121, doi: 10.1109/APEC.2013.6520195.

S. Jung and J. -I. Ha, "Sensorless control of AC machines at carrier frequency signal injection using analog filter circuit," 2013 IEEE 10th International Conference on Power Electronics and Drive Systems (PEDS), Kitakyushu, Japan, 2013, pp. 439-444, doi: 10.1109/PEDS.2013.6527059.

Y. Han and J. -I. Ha, "Single external source control of doubly-fed induction machine using dual inverter," 2013 IEEE Energy Conversion Congress and Exposition, Denver, CO, USA, 2013, pp. 2079-2085, doi: 10.1109/ECCE.2013.6646963.

Y. Lee and J. -I. Ha, "Six step phase modulation of dual inverter for open-end permanent magnet synchronous motor," 2013 IEEE Energy Conversion Congress and Exposition, Denver, CO, USA, 2013, pp. 3874-3879, doi: 10.1109/ECCE.2013.6647214.

H. Shin, J. -I. Ha and W. -J. Lee, "Active power control for minimum switching of three-phase electrolytic capacitor-less PWM converter," 2013 IEEE Energy Conversion Congress and Exposition, Denver, CO, USA, 2013, pp. 783-788, doi: 10.1109/ECCE.2013.6646782.

W. -J. Lee, Y. Son and J. -I. Ha, "Single-Phase Active Power Filtering Method Using Diode-Rectifier-Fed Motor Drive," in IEEE Transactions on Industry Applications, vol. 51, no. 3, pp. 2227-2236, May-June 2015, doi: 10.1109/TIA.2014.2365629.

A. Yoo, C. Hong and J. -I. Ha, "On-line rotor time constant estimation for indirect field oriented induction machine," 2013 IEEE Energy Conversion Congress and Exposition, Denver, CO, USA, 2013, pp. 3860-3865, doi: 10.1109/ECCE.2013.6647212.

J. -W. Shin, H. Shin, J. -I. Ha and B. -H. Cho, "Novel topology derivation for low-common mode noise H-bridge converters with additional switches," 2013 IEEE Energy Conversion Congress and Exposition, Denver, CO, USA, 2013, pp. 5335-5340, doi: 10.1109/ECCE.2013.6647424.

J. -W. Kim, J. -W. Shin and J. -I. Ha, "Cell balancing control using adjusted filters in flyback converter with single switch," 2013 IEEE Energy Conversion Congress and Exposition, Denver, CO, USA, 2013, pp. 287-291, doi: 10.1109/ECCE.2013.6646713.

M. -S. Lim, S. -H. Chai and J. -P. Hong, "Design of Saliency-Based Sensorless-Controlled IPMSM With Concentrated Winding for EV Traction," in IEEE Transactions on Magnetics, vol. 52, no. 3, pp. 1-4, March 2016, Art no. 8200504, doi: 10.1109/TMAG.2015.2474123.

2012

Yongjae Lee and Jung-Ik Ha, "High efficiency dual inverter drives for a PMSM considering field weakening region," Proceedings of The 7th International Power Electronics and Motion Control Conference, Harbin, 2012, pp. 1009-1014, doi: 10.1109/IPEMC.2012.6258939.

Jae-Jung Jung, E. Jung, Jung-Ik Ha and S. -K. Sul, "Initial voltage angle detection method of a PWM converter without any grid voltage measurement using conduction state of diodes for smooth starting," Proceedings of The 7th International Power Electronics and Motion Control Conference, Harbin, China, 2012, pp. 730-734, doi: 10.1109/IPEMC.2012.6258791.

A. G. Abo-Khalil, D. -C. Lee and S. -H. Lee, "Grid Connection of Doubly-Fed Induction Generators in Wind Energy Conversion System," 2006 CES/IEEE 5th International Power Electronics and Motion Control Conference, Shanghai, China, 2006, pp. 1-5, doi: 10.1109/IPEMC.2006.4778244.

Y. Han, S. Kim and J. -I. Ha, "Sensorless vector control of doubly fed induction machine using a reduced order observer estimating rotor speed and stator variables," 2012 IEEE Energy Conversion Congress and Exposition (ECCE), Raleigh, NC, USA, 2012, pp. 2623-2630, doi: 10.1109/ECCE.2012.6342540.

J. -W. Shin, G. -S. Seo, J. -I. Ha and B. -H. Cho, "A low common mode noise bridgeless boost-buck-boost power factor correction rectifier," 2012 IEEE Energy Conversion Congress and Exposition (ECCE), Raleigh, NC, USA, 2012, pp. 2901-2907, doi: 10.1109/ECCE.2012.6342368.

2011

S. Kim, J. -I. Ha and S. -K. Sul, "Single shunt current sensing technique in three-level PWM inverter," 8th International Conference on Power Electronics - ECCE Asia, Jeju, Korea (South), 2011, pp. 1445-1451, doi: 10.1109/ICPE.2011.5944454.

B. -G. Cho, J. -I. Ha and S. -K. Sul, "Voltage injection method for boundary expansion of output voltages in three shunt sensing PWM inverters," 8th International Conference on Power Electronics - ECCE Asia, Jeju, Korea (South), 2011, pp. 411-415, doi: 10.1109/ICPE.2011.5944564.

S. Kim, J. -I. Ha and S. -K. Sul, "PWM Switching Frequency Signal Injection Sensorless Method in IPMSM," in IEEE Transactions on Industry Applications, vol. 48, no. 5, pp. 1576-1587, Sept.-Oct. 2012, doi: 10.1109/TIA.2012.2210175.

2006

H. -S. Ryu, H. -S. Yoo and J. -I. Ha, "Carrier-Based Signal Injection Method for Harmonic Suppression in PWM Inverter Using Single DC-link Current Sensor," IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics, Paris, France, 2006, pp. 2700-2705, doi: 10.1109/IECON.2006.347627.

2003

Ji-Hoon Jang, S. -K. Sul, Jung-Ik Ha, M. Ohto and K. Ide, "Analysis of permanent magnet machine for sensorless control based on high frequency signal injection," 38th IAS Annual Meeting on Conference Record of the Industry Applications Conference, 2003., Salt Lake City, UT, USA, 2003, pp. 592-598 vol.1, doi: 10.1109/IAS.2003.1257561.

2002

K. Ide, Jung-Ik Ha, M. Sawamura, H. Iura and Y. Yamamoto, "High frequency injection method improved by flux observer for sensorless control of an induction motor," Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579), Osaka, Japan, 2002, pp. 516-521 vol.2, doi: 10.1109/PCC.2002.997884.

Jung-Ik Ha, M. Ohto, Ji-Hoon Jang and S. -K. Sul, "Design and selection of AC machines for saliency-based sensorless control," Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344), Pittsburgh, PA, USA, 2002, pp. 1155-1162 vol.2, doi: 10.1109/IAS.2002.1042705.

K. Ide, J. -I. H. Jung-Ik Ha, M. Sawamura, H. Iura and Y. Yamamoto, "A novel hybrid speed estimator of flux observer for induction motor drives," Industrial Electronics, 2002. ISIE 2002. Proceedings of the 2002 IEEE International Symposium on, L'Ayuila, Italy, 2002, pp. 822-827 vol.3, doi: 10.1109/ISIE.2002.1025839.

Ji-Hoon Jang, S. -K. Sul, Jung-Ik Ha, K. Ide and M. Sawamura, "Sensorless drive of SMPM motor by high frequency signal injection," APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335), Dallas, TX, USA, 2002, pp. 279-285 vol.1, doi: 10.1109/APEC.2002.989259.

2001

Ji-Hoon Jang, Jung-Ik Ha and S. -K. Sul, "Vector control of surface mounted permanent magnet motor without any rotational transducer," APEC 2001. Sixteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.01CH37181), Anaheim, CA, USA, 2001, pp. 845-849 vol.2, doi: 10.1109/APEC.2001.912467.

Jung-Ik Ha, K. Ide, T. Sawa and S. -K. Sul, "Sensorless position control and initial position estimation of an interior permanent magnet motor," Conference Record of the 2001 IEEE Industry Applications Conference. 36th IAS Annual Meeting (Cat. No.01CH37248), Chicago, IL, USA, 2001, pp. 2607-2613 vol.4, doi: 10.1109/IAS.2001.955987.

2000

M. Pucci and C. Serporta, "Finite-Element Analysis of Rotor Slotting Saliency in Induction Motors for Sensorless Control," in IEEE Transactions on Magnetics, vol. 46, no. 2, pp. 650-653, Feb. 2010, doi: 10.1109/TMAG.2009.2032862.

Hyung-Min Ryu, Jung-Ik Ha and S. -K. Sul, "A new sensorless thrust control of linear induction motor," Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129), Rome, Italy, 2000, pp. 1655-1661 vol.3, doi: 10.1109/IAS.2000.882103.

Yong-Won Choi et al., "Suppression of vibration for elevator system using dead-time compensation with current prediction," 6th International Workshop on Advanced Motion Control. Proceedings (Cat. No.00TH8494), Nagoya, Japan, 2000, pp. 439-442, doi: 10.1109/AMC.2000.862909.

Jung-Ik Ha and S. -K. Sul, "Physical understanding of high frequency injection method to sensorless drives of an induction machine," Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129), Rome, Italy, 2000, pp. 1802-1808 vol.3, doi: 10.1109/IAS.2000.882124.

1999

Dae-Woong Chung, Jung-Ik Ha, Seung-Ki Sul, Kozo Ide, Ikuma Murokita, Tosihiro Sawa , "Controller Design of Sensorless Induction Machine by High Frequency Voltage Injection ", IEEJ Transactions on Industry Applications, doi: doi.org/10.1541/ieejias.120.1257.

Hyung-Min Ryu, Jung-Ik Ha, Seung-Ki Sul, Kozo Ide, Yoichi Yamamoto and Eiji Watanabe, "Compensation of Voltage Distortion in PWM-VSI by Prediction of Stator Currents at Switching Point ", Proceedings of the 1999 Japan Industry Application Society Conference(JIASC ’99), vol. III, pp 87-90, Aug, 1999.

1998

Jung-Ik Ha, "Sensorless Field Orientation Control by High Frequency Injection for Overall Frequency Range Induction Machine Drives ", The International Conference on Electrical Engineering(ICEE ’98) Vol. I. pp.71-74, July, 1998.

Seog-Joo Kang, Jung-Ik Ha and Seung-Ki Sul, "Position Controlled Synchronous Reluctance Motor Without Rotational Transducer ", Industry Applications Society (IAS ’98) pp.671-676, 1998.

1997

Jung-Ik Ha and S. -K. Sul, "Sensorless field-orientation control of an induction machine by high-frequency signal injection," in IEEE Transactions on Industry Applications, vol. 35, no. 1, pp. 45-51, Jan.-Feb. 1999, doi: 10.1109/28.740844.

Jung-Ik Ha, Euh-Suh Koo, Hyeoun-Dong Lee, Joohn-Sheok Kim and S. -K. Sul, "Advanced control strategy of parallel hybrid low emission electric vehicle," Power Electronics in Transportation, Dearborn, MI, USA, 1996, pp. 71-76, doi: 10.1109/PET.1996.565912.