Title :
A Virtual Admittance Control Strategy of Three-Phase Voltage Source PWM Rectifier Under Unbalanced Input Voltage Conditions
Author :
Wang, Yingjie ; Wu, Xiaojie ; Yu, Yuesen
Author_Institution :
Sch. of Inf. & Electr. Eng., China Univ. of Min. & Technol., Xuzhou, China
Abstract :
A virtual admittance control strategy is proposed for three-phase voltage source PWM rectifier by analysis on the time-domain relationship between three-phase AC current and three-phase AC voltage under unbalanced input voltage conditions. The strategy does not only simplify the control algorithm, but also realize wanted power factor by the Coordinate Transformation. With reduced computation and improved speediness, generalized integrator is also introduced to realize static error free tracking control of positive and negative sequence current on two-phase static frame. Extensive simulation and experimental results verify the correctness of the proposed control strategy.
Keywords :
PWM rectifiers; electric admittance; electric variables control; integrating circuits; time-domain analysis; coordinate transformation; generalized integrator; input voltage; negative sequence current; positive sequence current; power control algorithm; reduced computation; static error free tracking control; three-phase AC current; three-phase AC voltage; three-phase voltage source PWM rectifier; time-domain; two-phase static frame; virtual admittance control; Admittance; Control systems; Error correction; Iterative algorithms; Pulse width modulation; Reactive power; Reactive power control; Rectifiers; Topology; Voltage control;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4812-8
Electronic_ISBN :
978-1-4244-4813-5
DOI :
10.1109/APPEEC.2010.5449367
