一种新型电压空问矢量PWM控制技术研究

由于目前较为成熟的三相异步感应电机控制常采用两电平PWM变频控制,其输出电压中除基波外,还包含有大量的谐波分量,造成电压波形的畸变,因而运行效率较低,浪费了大量的电能.文中介绍了采用电压空间矢量PWM控制技术来控制电机的方法,与传统的PWM方法相比.可以减小转矩脉动和铁损耗,并可提高电源电压的利用率,从而实现较好的节能效果.

Study of a Novel Voltage Space Vector PWM Control Technique

Because the control of three phase contains lots of harmonics in addition to the induction adopts the two - level PWM VVVF, the output voltage fundamental wave, which results in the aberrance of the voltage wave, thus the operating efficiency is much lower and wastes lots of electrical energy. The paper introduced a method of using the voltage space vector PWM technique to control the motor,In contrast with the traditional control method, it can reduce the torque pulsation and the iron loss, and can improve the utilization factor of the electrical source, therefore realizes the good energy conservation.