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Novel reduced-order small-signal model of three-phase PWM rectifiers and its application in control design and system analysis

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3 Author(s)
Hengchun Mao ; Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA ; Boroyevich, D. ; Lee, F.C.

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

Published in:

Power Electronics Specialists Conference, 1996. PESC '96 Record., 27th Annual IEEE  (Volume:1 )

Date of Conference:

23-27 Jun 1996