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

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3 Author(s)
Hengchun Mao ; AT&T Bell Labs., Mesquite, TX, USA ; Boroyevich, D. ; Lee, F.C.Y.

A reduced-order (RO) small-signal model of three-phase pulse-width-modulation (PWM) rectifiers is proposed. By combining the PWM switch model and equivalent multimodule model techniques in DC-DC converters, a three-phase rectifier can be modeled as a DC-DC 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 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 RO model is verified with the d-q model, switching-model simulation, and experimental results

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Power Electronics, IEEE Transactions on  (Volume:13 ,  Issue: 3 )