基于正序分量在线位置误差补偿的旋转高频注入法

doi:10.19595/j.cnki.1000-6753.tces.191568

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Abstract The rotating high-frequency injection method can estimate the rotor position of permanent magnet synchronous motor at zero speed and low speed, but the use of the filter may bring estimation errors during the demodulation process of the rotor position. The paper presents a method for online compensation of rotor estimation error using positive sequence current component. The mechanism of the compensation method was described when the motor was in zero speed and low speed. The phase delay of positive and negative sequence current in demodulation process was theoretically derived. The compensation effect of the positive sequence current was analyzed considering the influence of the stator resistance. The error compensation amount and rotor position obtained by the heterodyne method have multiple convergence points. Hence, a convergence point detection was added to eliminate some error convergence points. Simulation and experiments verified the effect of the proposed method on rotor position error compensation.

Key words： Rotating high-frequency injection rotor position estimation error positive sequence current online error compensation

Received: 19 November 2019

PACS:

TM921.51

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	Articles by authors
	Peng Wei
	Qiao Mingzhong
	Jiang Chao
	Zhang Zhibin
	Gao Jianxin

Cite this article:

Peng Wei,Qiao Mingzhong,Jiang Chao等. An Online Position Error Compensation Method of Rotating High-Frequency Injection Based on Positive Sequence Components[J]. Transactions of China Electrotechnical Society, 2020, 35(24): 5087-5095.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.191568 OR https://dgjsxb.ces-transaction.com/EN/Y2020/V35/I24/5087

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