一种单相异步电机变频驱动算法

摘要

设计了一种二相变频矢量脉宽调制(PWM)算法,分段选择“公共端W”的输出函数,使差函数U-W和V-W是相位相差90°的两相正弦波,得到频率可调、相位差90°的两相变频驱动电源,以此得到3个驱动输出的两相变频器,可用于变频驱动3线式或4线式单相异步电机,实际运行效果良好,并具有高集成度、高可靠性、成本低廉等优点.%A new two-phase variable frequency vector pulse width modulation (PWM) algorithm is proposed,this algorithm is two-phase variable frequency vector PWM.Design W-phase function for every partitions,obtain two-phase sine waveform with variable frequency,and phase difference between U-W and V-W is 90°.This two-phase inverter can be used to drive 3-wire type or 4-wire type single-phase induction motor.The results show that this two-phase inverter practically runs well,with high integration,high reliability and low cost.