Mathematical model and simulation of double Y shift 30° PMSM series-connected system with embed rotor

The mathematical models under three different coordinates are set up respectively of double Y shift 30° PMSM series-connected system supplied by single inverter with embed rotor and sine-waveform MMF distribution. The vector control model of series-connected system based on i
_d
=0 control strategy is presented. The simulation with variable load is proposed to realize the decouple control of this series-connected system.