一种新型的无位置传感器无刷直流电机转子位置检测方法

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Abstract It is a valuable research to design high temperature brushless DC (BLDCM) motor drive and control system for oil well detecting. In this paper, a new rotor position detecting method for the sensorless control of brushless DC motor is introduced. A novel circuit is designed to obtain fundamental harmonic from three-phase terminal voltage. A switched-capacitor filter which makes a fixed phase delay is researched. And the lag in phase is not related to the speed of the rotor. Since the phase is constant delay 90 electrical degree when the motor speed is changed, a rotor position signal which needn't phase compensation is obtained. It realizes a hardware-implemented sensorless BLDCM driver system and applies in well logging high temperature and speed BLDCM system successfully. The experimental results show that this method is simple and practical.

Key words： BLDCM sensorless back-EMF switched-capacitor filter

Received: 15 November 2007 Published: 13 February 2014

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TM351

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	Articles by authors
	Zou Jibin
	Jiang Shanlin
	Zhang Hongliang

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Zou Jibin,Jiang Shanlin,Zhang Hongliang. A Novel Method of Detecting for Rotor Position of a Sensorless Brushless DC Motor[J]. Transactions of China Electrotechnical Society, 2009, 24(4): 48-53.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2009/V24/I4/48

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作者简介: 邹继斌男, 1957年生, 教授, 博士生导师, 研究领域为一体化电机。江善林男, 1981年生, 博士研究生, 主要从事无刷直流电机及其驱动控制技术研究和电机综合物理场的计算。