Title :
A novel control method for three-phase PWM rectifiers using a single current sensor
Author :
Woo-Cheol Lee ; Hyun, Dong-seok ; Kie Lee, Taeck
Author_Institution :
Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea
fDate :
9/1/2000 12:00:00 AM
Abstract :
This paper proposes a control method for three-phase voltage-source PWM rectifiers using only a single current sensor in the DC-link. A PWM modulation strategy for reconstructing three phase currents from the DC-link current is given. When 3φ input currents cannot be reconstructed, a method for modifying the switching state of the PWM rectifier and a method for the predictive state observer is proposed. Compensation of the 2 sampling delays is also included, and this method is combined with all of the experiments. Performance differences between the two methods in a typical voltage source PWM rectifier are investigated experimentally
Keywords :
PWM power convertors; electric current control; electric current measurement; electric sensing devices; observers; rectifying circuits; voltage control; DC-link; active vectors; control method; current sensor; predictive state observer; sampling delays compensation; switching state modification; three phase currents reconstruction; three-phase PWM rectifiers; voltage source PWM rectifier; voltage-source PWM rectifiers; Data mining; Delay; Mathematical model; Phase modulation; Pulse width modulation; Reactive power; Rectifiers; Space vector pulse width modulation; Switches; Voltage control;
Journal_Title :
Power Electronics, IEEE Transactions on
