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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摘要

为了实现无硬件滤波电路下的无位置传感器无刷直流电机控制,针对其控制难点提出了一种利用芯片寄存器状态和换相电流续流时间的特性来避开PWM调制波形和换相时电流续流造成的尖峰电压干扰的转子位置检测方法。该方法对非导通相端电压进行定区间检测以及对换相时的续流噪声采取适当的延时操作来避开其干扰。该方法无需复杂的硬件滤波电路以及检测电路,无需复杂的软件算法,具有较高的实用性。最后通过实验验证了该方法在不同占空比和负载下控制结果的有效性。

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	王大方
	于知杉
	金毅
	朱洪彪
	王明玉

关键词 ：无刷直流电机, 无位置传感器, 无硬件滤波, 续流, 转子位置, 准确换相

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

收稿日期: 2016-05-10 出版日期: 2017-10-25

PACS:

TM301

作者简介: 王大方男,1978年生,博士,教授,博士生导师,研究方向为新能源车辆与电驱动技术。E-mail：wdflcjl@163.com;金毅男,1979年生,博士,讲师,研究方向为车辆驱动技术、硬件在环测试系统开发。E-mail：13581748524@163.com（通信作者）

引用本文:

王大方,于知杉,金毅,朱洪彪,王明玉. 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[J]. 电工技术学报, 2017, 32(19): 71-80. Wang Dafang, Yu Zhishan, Jin Yi, Zhu Hongbiao, Wang Mingyu. Research of Rotor Position Detection for Sensorless BLDCM without Hardware Filter Circuit. Transactions of China Electrotechnical Society, 2017, 32(19): 71-80.

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

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