高分辨的永磁无刷直流电机转子零初始位置检测方法

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Abstract Based on finite element analysis to electromagnetic field of Brushless DC Motor (BLDCM), stator winding inductance curves relative to different rotor position due to the saturation effect are showed. And then current response regularity on DC bus of BLDCM power driver is analyzed when different voltage vectors are applied to the stator windings. The judgment rules and implementation steps for high resolution rotor zero initial position are presented and so rotor positioning error is less than 7.5 degree electrical angle. The method is also applicable to BLDCM running at low speed, so that reliable operation of BLDCM is realized without oscillation in starting and low speed. Prototype test was made to prove the feasibility of the method.

Key words： BLDCM position sensorless control initial position detecting winding inductance

Received: 27 August 2012 Published: 25 March 2014

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TM351

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	Tang Ningping
	Cui Bin

Cite this article:

Tang Ningping,Cui Bin. A High Resolution Detecting Method for Rotor Zero Initial Position of Sensorless Brushless DC Motor[J]. Transactions of China Electrotechnical Society, 2013, 28(10): 90-96.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I10/90

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