| 超高速永磁无刷电机无位置传感器半闭环启动法 |
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| 引用本文： | 张前,冯明.超高速永磁无刷电机无位置传感器半闭环启动法[J].电机与控制学报,2016(10):46-54. |
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| 作者姓名： | 张前 冯明 |
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| 作者单位： | 北京科技大学机械工程学院,北京,100083 |
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| 基金项目： | 国家"863"计划(SS2012AA110501) |
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| 摘 要： | 针对超高速永磁无刷电机无位置传感器启动过程中低速时无法准确提取反电动势信号的问题,提出一种半闭环启动方法。该方法可以使电机由静止阶段通过单步加速迅速切换到闭环加速阶段,当电机闭环加速至可以检测到稳定的反电动势信号时在一个换相周期内切换到正常运行。该启动方法无需任何附加电路,整个启动过程稳定,不会出现因扰动或负载变化引起的失步,可以很好地解决超高速永磁无刷电机无位置传感器启动问题。依据此启动方法开发出一套永磁无刷电机驱动器并进行实验验证,证明该启动方法可以快速地启动永磁无刷电机,且能在80 000 r/min时平稳运行。
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| 关 键 词： | 永磁无刷电机 反电动势 无位置传感器 启动 超高速电机 |
Semi-close-loop startup method for sensorless ultra-high-speed permanent magnet brushless motor |
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| Abstract: | To solve the problem that sensorless ultra-high-speed permanent magnet brushless motor (PMBM)can not get the precious back electromotive force(BEMF) signals at low speed, a semi-close-loop startup method is put forward.With this method, the motor was accelerated to close-loop operation within one step of accelerating and shifted to BEMF operating within one commutation period when the drive got stable BEMF signals.By this startup method, the ultra-high-speed PMBM was started stably, without any external circuits and going out of step because of disturbance or change of load .It verifies that the drive with this startup method can start up PMBM quickly and operate at 80000 r/min stably. |
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| Keywords: | permanent magnet brushless motors back electromotive force position sensorless startup ultra-high-speed motors |
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