由于多相电机较以前传统的三相电机优点明显,因此越来越受到关注.其优点之一就是多台多相电机可以进行串联,并且串联的多台电机由一台电压源型逆变器供电,减少了逆变器支路数量,使设备的体积大大减小.系统由一台对称六相永磁同步电机(PMSM)和一台夹角为0°的六相PMSM组成,两台电机的定子绕组按照一定的方式联接,运用矢量控制技术使两电机解耦,两电机实现独立控制.从电机的结构入手,分析两电机原理及串联规则,并建立两电机串联的数学模型,最后确定串联驱动系统的动态解耦性.%Multiphase motors were gaining an increasing interest due to the advantages they possess compared to conventional three-phase motors. One of these advantage was that several multiphase motors could connect in series and these motors powered by a voltage source inverter. Reducing the number of branches of the inverter, and the volume of device greatly reduced. This system consists of a symmetrical six-phase PMSM and a zero-angle six-phase PMSM. The stators windings of both motors were connected in series in appropriate manner. Vector control technology was used to make the motor decouple and achieve independent control of each motor. Fristly, the work principle and series rules of two motors was analyzed, followed by the establishment of the mathematical model of the two motors in series. And then the feasibility of the whole system was proved by simulation.
展开▼
