摘要
传统的同步电动机由于“转子电量法”检测转子位置本身的缺陷,对投励时刻把握不准,实现顺极性投励可靠性差,对电网和电机冲击较大,牵入同步时间较长,在重载条件下甚至不能牵入同步。在仿真实验确定的“最佳顺极性投励”时刻的基础上,提出了通过检测、分析电机定子电流波形来实现最佳顺极性的“定子电量法”实现路径,以提高投励的可靠性并改善同步电机的起动性能。
Because of the limitation of ＂rotor-electricity＂ itself, which can not accurately catch the time of excitation, traditional synchronous motor would cause the poor possibility of parapolarity exciting, the great impact to grid and motor and the ling time of pulling into step, even fall in heavy-load condition. In this paper, a new excitation method ＂stator-electricity＂ was presented, it can catch the best excitation time accurately to enhance the reliability of excitation and improve starting performance of synchronous motor through detecting and analyzing the wave of stator current.
出处
《电机与控制应用》
北大核心
2007年第3期15-18,共4页
Electric machines & control application
关键词
同步电动机
顺极性投励
定子电量法
synchronous motor
parapolarity exciting
stator-electricity
