无位置传感器无刷直流电机无硬件滤波转子位置检测方法

doi:10.19595/j.cnki.1000-6753.tces.160655

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Abstract

A rotor position detection method based on the state of chip's registers and the features of freewheeling time when motor is commutating was presented for the sensorless control system of Brushless DC(BLDC) motors with no hardware filter circuit. The interference of PWM switching noise and the noise of freewheeling can be avoided by detecting the effective range of non-conducting phase's terminal voltage and delaying an appropriate time to avoid the noise of freewheeling. The method does not need the complex hardware filter and detection circuit, and it also does not need the complex algorithms, so the method has advanced practicability. The theoretical derivation proves the correctness of the method, and the control results are given under different PWM duty cycles and loads in the experiment, which confirms the validity of the presented method.

Key words： Brushless DC motor (BLDCM) sensorless control no hardware filter freewheeling rotor position accurate commutation

Received: 10 May 2016 Published: 25 October 2017

PACS:

TM301

Corresponding Authors: 国家国际科技合作专项项目（2014DFB70120）、国家自然科学基金项目（51305457）、航天科学技术基金项目（2017-HT-HG-36）、山东省科技发展计划项目（2014GGX105002）和威海市科技发展计划项目（2014DXGJ02）资助

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	Articles by authors
	Wang Dafang
	Yu Zhishan
	Jin Yi
	Zhu Hongbiao
	Wang Mingyu

Cite this article:

Wang Dafang,Yu Zhishan,Jin Yi等. Research of Rotor Position Detection for Sensorless BLDCM without Hardware Filter Circuit[J]. Transactions of China Electrotechnical Society, 2017, 32(19): 71-80.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.160655 OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I19/71

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