| 无位置传感器无刷直流电动机无反转起动及其平滑切换 |
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| 引用本文： | 张智尧,林明耀,周谷庆.无位置传感器无刷直流电动机无反转起动及其平滑切换[J].电工技术学报,2009,24(11). |
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| 作者姓名： | 张智尧 林明耀 周谷庆 |
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| 作者单位： | 东南大学电气工程学院,南京,210096 |
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| 摘 要： | 提出了一种隐极式无刷直流电动机的无反转起动及其平滑切换新方法.根据电动机定子铁心饱和效应,采用短时脉冲检测方法实现转子定位与加速.针对"三段式"起动方法切换的缺点,提出了在一定转速时关闭所有开关器件,利用电动机端电压波形与导通相之间的对应关系实现平滑切换的方法.反电动势过零点检测选在PWM调制信号开通状态结束时刻,在对端电压进行采样后由软件算法确定真实过零点.样机试验结果验证了本文提出方法的可行性和有效性.
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| 关 键 词： | 无刷直流电动机 无位置传感器控制 无反转起动 反电动势法 平滑切换 |
Anti-Reverse Rotation Startup and Smoothly Switching of Sensorless Brushless DC Motor |
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| Zhang Zhiyao,Lin Mingyao,Zhou Guqing.Anti-Reverse Rotation Startup and Smoothly Switching of Sensorless Brushless DC Motor[J].Transactions of China Electrotechnical Society,2009,24(11). |
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| Authors: | Zhang Zhiyao Lin Mingyao Zhou Guqing |
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| Affiliation: | Zhang Zhiyao Lin Mingyao Zhou Guqing(Southeast University Nanjing 210096 China) |
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| Abstract: | In this paper,a novel anti-reverse-rotation startup and smoothly switching method for a non-salient pole brushless DC motor(BLDCM) is presented.Using short pulse sensing method based on the saturation effect of the stator iron,the rotor can be located and accelerated.The drawbacks of the 3-stage startup method are analyzed,and the motor is switched smoothly according to the relationship between the terminal voltage waveform and commutation phases,when all the power devices are turned off.The back EMF zero-c... |
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| Keywords: | Brushless DC motor sensorless control starting without reverse rotation back EMF method switch smoothly |
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