基于空间电压矢量注入的频率可变型五相永磁同步电机最大转矩电流比控制

doi:10.19595/j.cnki.1000-6753.tces.191079

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Abstract In order to solve the problem that the high-frequency signal injection is not flexible enough in the traditional maximum-torque-per-ampere (MTPA) control method, a novel signal injection method with variable frequency is proposed. The proposed method changes the action time of each voltage vector in space vector pulse width modulation (SVPWM) to generate a variable frequency signal, and directly injects the signal into the inverter to realize the MTPA. Since the variable frequency signal injection method is implemented in SVPWM algorithm, the frequency of the injected signal changes with the motor speed, which makes the selection of the signal frequency more flexible. Additionally, since the signal is directly injected into the inverter, the frequency of the injected signal does not interfere with the inherent harmonics in the motor. Hence, the bandwidth limitations of the current loop can be eliminated. The proposed method simplifies the part of signal analysis without reducing the tracking performance of MTPA points. Finally, the experimental and simulation results show that the method can accurately track MTPA points, and has robustness to torque and speed changes.

Key words： Interior five-phase permanent-magnet synchronous motor space-vector signal modu- lation maximum-torque-per-ampere control variable frequency signal injection

Received: 27 August 2019

PACS:	TM351
	TM341

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	Liu Guohai
	Zhang Jiahao
	Chen Qian

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Liu Guohai,Zhang Jiahao,Chen Qian. Variable Frequency Maximum-Torque-Per-Ampere Control for Five-Phase Permanent-Magnet Motor Based on Space Voltage Vector Injection[J]. Transactions of China Electrotechnical Society, 2020, 35(20): 4287-4295.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.191079 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I20/4287

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