三电平逆变器SVPWM调速控制系统的研究

Study on the Three-level SVPWM Inverter Controlled Speed-regulation System

为了研究三电平逆变器在高压大容量电机变频调速中的应用,详细分析了三电平逆变器的开关模型和拓扑结构,得到了在三电平逆变器供电下异步电机调速系统的数学模型,提出了一种以空间矢量脉宽调制实现对逆变桥控制的方法。仿真表明,该方法可以有效地实现三电平空间矢量控制,实现高性能异步电机调速控制。

In order to srudy three - level inverters using in high voltage , high power motors drive applications, the switch model and topolgical were analyzed in detail, the mathematic model of the asynchronous motor was presented, then a method that SVPWM control convert bridge was proposed. The simulation results indicate that the method can effectively realize three - level SVPWM control and high performance speed - regulation of asynchronous motor.