多相三电平逆变器-PMSM矢量控制系统研究

作为舰船综合电力推进系统的前期研究,本文研究了一种基于4组三电平逆变器的大功率12相永磁同步电机(Permanent Magnet Synchronous Motor,PMSM)矢量控制系统。文中首先介绍了三电平逆变器和PMSM矢量控制原理,在此基础上论述了多相PMSM变频调速系统采用多组三电平逆变器进行矢量控制的原理和实现方法。文中三电平逆变器采用空间矢量脉宽调制(Space Vector Pulse Width Modulation,SVPWM)控制策略,以TMS320LF2407型DSP为数控平台实现了三电平逆变器的空间电压矢量控制,并且多组逆变器之间采用CAN总线进行通讯。最后给出了相关的仿真波形和实验波形。

Research on Vector Control System of Permanent Magnet Synchronous Motor based on Multi-phase Three-level Inverter

As the earlier stage study of electrical marine propulsion,this paper introduces a new kind of vector control system of twelve-phase Permanent Magnet Synchronous Motor(PMSM), which is based on four modules of three-level inverter.The paper analyzes the theory of three-level inverter and the vector control strategy of PMSM, and then describes the research process of the digital vector control system of multi-phase PMSM with the use of multiply three-level inverter modules.The space vector pulse width modulation (SVPWM) scheme is applied into the control of the inverter and the space vector control has been realized by DSP.All the inverter modules can communicate with each other by the use of CAN bus technology.In the end, a series of diagram and waveform are given for reference.