STUDY OF POWER GENERATION CONTROL STRATEGY FOR FIVE-PHASE OPEN-WINDING PMSG BASED ON DUAL-SPACE CLOSED-LOOP VECTOR CONTROL USING CARRIER-BASED PWM TE CHNIQUE

In this paper, a power generation control strategy for open-end winding five phase magnet synchronous generator (OW-FPMSG) with a non-sinusoidal air gap magnetic field is studied, based on the need for high-reliability and high-power density of starter/generator system applied to launch vehicle. Firstly, the mathematical model of OW-FPMSG is established. Secondly, a dual-space closed-loop vector control strategy that can suppress the third harmonic current is put forward. Then, a simulation model is built to validate the proposed control strategy. A dead-time compensation method is added to the double-space closed-loop vector control strategy, so that the content of the third harmonic current can be further reduced. Finally, experiments are carried by the principle prototype. The control strategy is verified by the experimental result that the content of the third harmonic in the phase current is reduced from 14.11% to 1.52%. And the content of the third harmonic in the phase current is further reduced to 1.13% after the dead-time compensation method is added.