基于虚拟信号和高频脉振信号注入的无位置传感器内置式永磁同步电机MTPA控制

doi:10.19595/j.cnki.1000-6753.tces.211039

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Abstract To reduce the copper loss of the traditional sensorless control system for interior permanent magnet synchronous motor (IPMSM) at low-speed region, a new method of virtual signal and high-frequency pulsating signal injection is proposed to realize the sensorless control and the maximum torque per ampere (MTPA) control simultaneously to improve the motor output torque capability and system efficiency. Different from the traditional MTPA control based on virtual signal injection, the proposed MTPA method injects a virtual constant signal into the estimated d-axis and q-axis currents, thereby avoiding the inference between the two control strategies. The proposed MTPA method does not cause additional copper loss and is parameter independent. Besides, since the injected signal in MTPA method is constant, the detection accuracy of rotor position will not be affected. The experiments verify the proposed method can realize the sensorless control and the MTPA control simultaneously and accurately under different load and speed conditions.

Key words： Interior permanent magnet synchronous motor high-frequency pulsating signal injection sensorless control maximum torque per ampere control virtual signal injection

Received: 12 July 2021

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TM315

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	Zhao Wengxiang
	Liu Huan
	Tao Tao
	Qiu Xianqun

Cite this article:

Zhao Wengxiang,Liu Huan,Tao Tao等. MTPA Control of Sensorless IPMSM Based on Virtual Signal and High-Frequency Pulsating Signal Injection[J]. Transactions of China Electrotechnical Society, 2021, 36(24): 5092-5100.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.211039 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I24/5092

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