Implementation of a Current Harmonics Suppression Strategy for a Six-Phase Permanent Magnet Synchronous Motor
This paper proposes a current harmonic suppression strategy that combines harmonic synchronous rotating frame (HSRF) current feedback control and back-electromotive force harmonic (BEMFH) feedforward compensation to suppress the fifth and seventh current harmonics of a six-phase permanent magnet syn...
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2025-01-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/18/3/665 |
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| author | Yu-Ting Lin Jonq-Chin Hwang Cheng-Ting Tsai Cheng-Tsung Lin |
| author_facet | Yu-Ting Lin Jonq-Chin Hwang Cheng-Ting Tsai Cheng-Tsung Lin |
| author_sort | Yu-Ting Lin |
| collection | DOAJ |
| description | This paper proposes a current harmonic suppression strategy that combines harmonic synchronous rotating frame (HSRF) current feedback control and back-electromotive force harmonic (BEMFH) feedforward compensation to suppress the fifth and seventh current harmonics of a six-phase permanent magnet synchronous motor (PMSM). The current harmonics of six-phase PMSMs vary with the current due to manufacturing imperfections and the inverter nonlinearity effect. Using fixed-parameter BEMFH feedforward compensation cannot completely eliminate current harmonics. This paper integrates a closed-loop harmonic current control strategy, using HSRF in the differential mode of the six-phase PMSM rotor rotating frame to effectively mitigate current harmonic variations caused by load changes. The controller adapts a Texas Instrument microcontroller featuring encoder interfaces, complementary pulse width modulation (PWM), and analog–digital converters (ADC) to simplify the board design. The rotor angle feedback is provided by a 12-pole resolver in conjunction with an Analog Device resolver-to-digital converter (RDC). The specifications of the six-phase PMSM are as follows: 12 poles, 1200 rpm, 200 A (rms), and 600 V DC bus. The total harmonic distortion (THD) of the phase current for harmonics below the 21st order was reduced from 31.71% to 4.84% under the test conditions of 1200 rpm rotor speed and 200 A peak phase current. Specifically, the fifth and seventh harmonics were reduced from 29.98% and 9.72% to 2.74% and 1.21%, respectively. These results validate the feasibility of the proposed current harmonic suppression strategy. |
| format | Article |
| id | doaj-art-acbda32a37b04859a036c6806f540ebe |
| institution | DOAJ |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Energies |
| spelling | doaj-art-acbda32a37b04859a036c6806f540ebe2025-08-20T03:12:35ZengMDPI AGEnergies1996-10732025-01-0118366510.3390/en18030665Implementation of a Current Harmonics Suppression Strategy for a Six-Phase Permanent Magnet Synchronous MotorYu-Ting Lin0Jonq-Chin Hwang1Cheng-Ting Tsai2Cheng-Tsung Lin3Department of Electrical Engineering, National Taiwan University of Science and Technology, Taipei City 106, TaiwanDepartment of Electrical Engineering, National Taiwan University of Science and Technology, Taipei City 106, TaiwanDepartment of Electrical Engineering, National Taiwan University of Science and Technology, Taipei City 106, TaiwanChroma ATE Inc., Taoyuan City 333, TaiwanThis paper proposes a current harmonic suppression strategy that combines harmonic synchronous rotating frame (HSRF) current feedback control and back-electromotive force harmonic (BEMFH) feedforward compensation to suppress the fifth and seventh current harmonics of a six-phase permanent magnet synchronous motor (PMSM). The current harmonics of six-phase PMSMs vary with the current due to manufacturing imperfections and the inverter nonlinearity effect. Using fixed-parameter BEMFH feedforward compensation cannot completely eliminate current harmonics. This paper integrates a closed-loop harmonic current control strategy, using HSRF in the differential mode of the six-phase PMSM rotor rotating frame to effectively mitigate current harmonic variations caused by load changes. The controller adapts a Texas Instrument microcontroller featuring encoder interfaces, complementary pulse width modulation (PWM), and analog–digital converters (ADC) to simplify the board design. The rotor angle feedback is provided by a 12-pole resolver in conjunction with an Analog Device resolver-to-digital converter (RDC). The specifications of the six-phase PMSM are as follows: 12 poles, 1200 rpm, 200 A (rms), and 600 V DC bus. The total harmonic distortion (THD) of the phase current for harmonics below the 21st order was reduced from 31.71% to 4.84% under the test conditions of 1200 rpm rotor speed and 200 A peak phase current. Specifically, the fifth and seventh harmonics were reduced from 29.98% and 9.72% to 2.74% and 1.21%, respectively. These results validate the feasibility of the proposed current harmonic suppression strategy.https://www.mdpi.com/1996-1073/18/3/665current harmonicssix-phase PMSMcommon mode and differential modeback-EMF harmonic compensationharmonic synchronous rotating frame |
| spellingShingle | Yu-Ting Lin Jonq-Chin Hwang Cheng-Ting Tsai Cheng-Tsung Lin Implementation of a Current Harmonics Suppression Strategy for a Six-Phase Permanent Magnet Synchronous Motor Energies current harmonics six-phase PMSM common mode and differential mode back-EMF harmonic compensation harmonic synchronous rotating frame |
| title | Implementation of a Current Harmonics Suppression Strategy for a Six-Phase Permanent Magnet Synchronous Motor |
| title_full | Implementation of a Current Harmonics Suppression Strategy for a Six-Phase Permanent Magnet Synchronous Motor |
| title_fullStr | Implementation of a Current Harmonics Suppression Strategy for a Six-Phase Permanent Magnet Synchronous Motor |
| title_full_unstemmed | Implementation of a Current Harmonics Suppression Strategy for a Six-Phase Permanent Magnet Synchronous Motor |
| title_short | Implementation of a Current Harmonics Suppression Strategy for a Six-Phase Permanent Magnet Synchronous Motor |
| title_sort | implementation of a current harmonics suppression strategy for a six phase permanent magnet synchronous motor |
| topic | current harmonics six-phase PMSM common mode and differential mode back-EMF harmonic compensation harmonic synchronous rotating frame |
| url | https://www.mdpi.com/1996-1073/18/3/665 |
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