International Conference
| Analysis of Pulse Width Modulation Methods for PMSM Sensorless Control Based on Current Derivative Measurement | |
|---|---|
| Year | 2023 |
| Month | August |
| Journal | 2023 IEEE International Symposium on Sensorless Control for Electrical Drives (SLED) |
| Author | Gyu Cheol Lim; Juwon Lee; Byung Ryang Park; Jung-Ik Ha |
| Link |
http://ieeexplore.ieee.org/abstract/document/10261383
24회 연결
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For a full-region sensorless control based on the current derivative, modifying the pulse-width modulation (PWM) eliminates the dead zone at a low modulation index (MI). This paper proposes and analyzes the various PWM methods for the full-region sensorless control of permanent magnet synchronous motor (PMSM). The position estimation error is extracted from the current derivative in one active voltage vector (AVV), and the actual rotor position is obtained using a Luenberger observer. To achieve a sufficient AVV for current derivative measurement, four types of PWM methods are introduced. The performance of each PWM method is analyzed and compared in terms of the motor drive and position estimation. In addition, the implementation of each PWM using the digital signal processor (DSP) is explained, and the compensation methods are applied to improve the drive performance. The effectiveness of the proposed method is verified by a 1 kW PMSM drive system, and the results show that the rotor position is accurately estimated within an error of less than 0.2 rad. |
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