期刊论文

Zhu, J.(wenke03@163.com)

中文

仪器仪表学报

0254-3087

2013

34

1

173-179

10.3969/j.issn.0254-3087.2013.01.025

2009AA05Z209:国家高技术研究发展计划（863计划） 61174125:国家自然科学基金 12JJ3042:湖南省自然科学基金

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针对无位置传感器无刷直流电机(brushless DC motor,BLDCM)启动问题,提出了一种转子初始位置精准预定位与加速过程中优化定位相结合的闭环三段式启动策略。在电机绕组中施加短时间脉冲电压矢量,通过检测直流母线电流可以将转子位置锁定在60°电度角范围内,在此基础上通过向指定绕组通电与检测电流比较阈值完成转子精准预定位。预定位后进入优化定位与加速阶段,此时电流比较阈值作为换相条件,保证转子在加速过程中准确换相,当转速达到一定值时系统切换到反电势运行状态(backelectro-motive-force,EMF)。实验结果表明,提出的三段式闭环启动方法无需传感器、成本低、可靠性高,能保证系统在整个启动...

Aiming at the starting problem of sensorless permanent magnet brushless DC motor （ BLDCM ）, a novel closed-loop 3-step start-up strategy is proposed,which integrates the precise pre-location of initial rotor-position and the location optimization in accelerating process. When short-width-time pulse voltage vectors are injected into 3- phase stator windings, the initial rotor-position is locked in a 60° electrical angle range through detecting the current in the DC link of the inverter. Based on above, the precise pre-location is achieved by ...