Title :
Novel reduced-order small-signal model of three-phase PWM rectifiers and its application in control design and system analysis
Author :
Mao, Hengchun ; Boroyevich, Dushan ; Lee, Fred C.
Author_Institution :
Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
A reduced-order small signal model of three-phase PWM rectifiers is proposed. By combining the PWM switch model and equivalent multi-module model techniques in DC-DC power converters, a three-phase rectifier can be modeled as a DC-DC power converter with equivalent power capability and small-signal characteristics. This model reduces the system order to two, and greatly simplifies the control design and system analysis of three-phase power converters. In this paper, the proposed model is also used for control design and for system interaction analysis on the three-phase interface of a boost rectifier. The reduced-order model is verified with the d-q model, switching-model simulation and experimental results
Keywords :
AC-DC power convertors; PWM power convertors; power semiconductor switches; rectifying circuits; semiconductor device models; switching circuits; DC-DC power converter; PWM switch model; boost rectifier; control design; d-q model; equivalent multi-module model techniques; equivalent power capability; reduced-order small-signal model; small-signal characteristics; switching-model simulation; system analysis; system interaction; three-phase PWM rectifiers; three-phase interface; Control design; DC-DC power converters; Equations; Power system modeling; Pulse width modulation; Rectifiers; Reduced order systems; Signal analysis; Switches; Switching converters;
Conference_Titel :
Power Electronics Specialists Conference, 1996. PESC '96 Record., 27th Annual IEEE
Conference_Location :
Baveno
Print_ISBN :
0-7803-3500-7
DOI :
10.1109/PESC.1996.548635
