Title :
Single sensor current control of a three-phase voltage-source PWM converter using predictive state observer
Author :
Lee, Woo-Cheol ; Hyun, Dong-seok ; Lee, Taeck-Kie
Author_Institution :
Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
This paper proposes a control method for a three-phase voltage-source PWM converter with 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. A predictive current controller for the voltage-source PWM converter is presented which uses a space vector modulation strategy to determine the switching instants of the voltage-source PWM converter. This feedback control employs a state observer to ensure reliable feedback signals under all operating conditions. Compensation of the 2 sample delays are also incorporated. Therefore, in this paper, single sensor current control using a predictive state observer for a three-phase PWM power converter is discussed and investigated experimentally
Keywords :
AC-DC power convertors; PWM power convertors; control system synthesis; electric current control; observers; predictive control; rectifying circuits; DC link; PWM modulation strategy; delay compensation; feedback control; operating conditions; predictive current controller; predictive state observer; single-sensor current control; space vector modulation strategy; switching instants; three-phase current reconstruction; three-phase voltage-source PWM converter; Current control; Data mining; Delay; Pulse width modulation; Pulse width modulation converters; Reactive power; Rectifiers; Switches; Voltage control; Zero voltage switching;
Conference_Titel :
Industrial Electronics Society, 1999. IECON '99 Proceedings. The 25th Annual Conference of the IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
0-7803-5735-3
DOI :
10.1109/IECON.1999.816501
