Direct power control system of PWM rectifier based on synthetic voltage space vector

TLDR: In this paper, a resultant voltage space vector-based voltage type PWM rectifier direct power control system was proposed, synthesizing adjacent voltage space vectors into a resultant vector with an amplitude the same as those of other nonzero vector space vectors to make the number of nonzero space vectors up to 12.

Abstract: The invention advances a resultant voltage space vector-based voltage type PWM rectifier direct power control system, synthesizing adjacent voltage space vectors into a resultant voltage space vector with an amplitude the same as those of other nonzero voltage space vectors to make the number of nonzero voltage space vectors up to 12. For further reducing power control errors, AC current harmonics and DC voltage fluctuation, it redivides input space into sectors. According to the new 12 voltage space vectors and divided sectors, it determines a new power control switch list. And computer simulation shows that it has good dynamic and static performances, making unit power factor, DC voltage fluctuation and AC current harmonics all reach national electric energy quality standard.