摘要
为解决凸极同步电动机异步起动投励牵入同步存在的问题,提高投励的可靠性并改善起动性能,提出了无转子位置传感器的"定子电量法"最佳顺极性投励实现方法,即通过检测同步电动机定子电流峰值的变化来确定投励时刻实现最佳顺极性投励。实验结果表明使用该方法实现顺极性投励具有可靠性好、牵入同步时间短、对电网冲击小、在低电压和重载条件下牵入同步容易等优点。
In this paper,a method of sensorless best exciting in towards polarity by statorelectricity of synchronous motor is presented on the base of calculated best exciting time ,in order to solve the present problems and enhance the reliability of exitation,which exist in asynchronous starting of synchronous electrical machine. Detect and analyze the wave of stator current to catch the best exitation time accurately to realize best exitation. The results of experiment demonstrated the advantages of high reliability,short time and low impact when pulling into step,much easier to pull into step in low voltage and heavy load condition, which showed the feasibility of this method.
出处
《电力学报》
2008年第4期301-303,307,共4页
Journal of Electric Power
关键词
同步电动机
顺极性投励
定子电量法
synchronous motor
exciting in towards polarity
stator-electricity
