基于霍尔位置信号的无刷直流电磁转矩观测

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Abstract This paper proposed a novel electromagnetic torque observation method for brushless DC motor(BLDCM), based on analysis of the relationship between back electromotive force(back EMF) waveform function and hall position signals. This method solves the problem of observation of torque’s amplitude and sign without continuous rotor position information. Compared with traditional methods, the proposed method doesn’t need continuous rotor position information and the back EMF waveform, but only the discrete hall position signals. The experimental results show that, the amplitude and sign of the torque can be calculated effectively, both in steady state and the forward/reverse running switching process. the proposed method can be used in direct torque control(DTC) of BLDCM.

Key words： Brushless DC motor hall position signals back electromotive force torque observation

Received: 26 March 2014 Published: 29 June 2015

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TM351

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	Zhang Qingchao
	Ma Ruiqing
	Zhang Zhen
	Luo Guangzhao

Cite this article:

Zhang Qingchao,Ma Ruiqing,Zhang Zhen等. Electromagnetic Torque Observation of Brushless DC Motor Based on Hall Position Signals[J]. Transactions of China Electrotechnical Society, 2015, 30(10): 187-195.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I10/187

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