基于高频正交方波电压注入的永磁同步电机初始位置辨识

doi:10.19595/j.cnki.1000-6753.tces.181144

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Abstract In the field of interior permanent magnet synchronous motor(IPMSM) rotor initial position identification, the conventional methods are possible to lead a long convergence process or even a wrong convergence due to multiple zero points, and the magnetic polarity cannot be identified, so that the motor starts failure or even reverses. Therefore, a rotor position identification method based on high frequency(HF) orthogonal square wave voltage injection is proposed in this paper. Firstly, the HF voltage signals are injected into the stationary reference frame(SRF), and then the HF response currents in the SRF are used to identify the rotor magnetic pole position. Secondly, a low-frequency sinusoidal current signal is injected into d-axis to identify rotor magnetic polarity. Because the rotor position can be obtained directly by arc tangent function in this method, it does not need long time to converge. Finally, the proposed method is verified on the 1.5kW IPMSM system.

Key words： Permanent magnet synchronous motor rotor intial position identification HF orthogonal square wave voltage injection magnetic polarity identification

Received: 02 July 2018 Published: 12 October 2019

PACS:	TM341
	TM351

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	Articles by authors
	Jiang Yan
	Liu Simei
	Luo Derong
	Huang Shoudao
	Wu Xuan

Cite this article:

Jiang Yan,Liu Simei,Luo Derong等. Rotor Initial Position Identification Based on the HF Orthogonal Square-Wave Voltage Injection[J]. Transactions of China Electrotechnical Society, 2019, 34(19): 4006-4016.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.181144 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I19/4006

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