摘要
弱磁场控制下会引起感应电机输出转矩减小,为了进一步提高电机运行效率,设计了一种感应电机电压闭环弱磁控制方法。采用空间向量脉宽调制时,通过提高直流电压利用率把内切圆电压扩展到六角结构。开展性能试验测试,研究结果表明:该研究实现弱磁区加速过程,可以有效保持原先速度,能够提高弱磁区负载性能。在六角放大电压下将电机从静态阶跃到3倍额定转速,电流能够精确跟踪给定值,实现零容差条件下电流动态调节。该研究有助于提高感应电机的运行稳定性,为后续工艺优化奠定一定基础。
Under weak magnetic field control,the output torque of induction motors will decrease.In order to further improve the operating efficiency of the motor,a voltage closed-loop weak magnetic field control method for induction motors is designed.When spatial vector pulse width modulation is adopted,the inscribed circle voltage is extended to the hexagonal structure by increasing the utilization rate of the DC voltage.Performance tests were carried out.The research results show that this study realizes the acceleration process in the weak magnetic zone,which can effectively maintain the original speed and improve the load performance in the weak magnetic zone.Under hexagonal amplification voltage,the motor is stepped from static to three times the rated speed,and the current can precisely track the given value,achieving dynamic current regulation under zero tolerance conditions.This research is conducive to improving the operational stability of induction motors and laying a certain foundation for subsequent process optimization.
作者
陈永华
陈利涛
CHEN Yonghua;CHEN Litao(Xuchang Electrical Vocational College,School of Electrical Engineering,Xuchang 461000,China)
出处
《拖拉机与农用运输车》
2026年第2期55-58,共4页
Tractor & Farm Transporter
关键词
感应电机
弱磁控制
脉宽调制
电流调节
Induction motor
Weak magnetic field control
Pulse width modulation
Current regulation
