Title :
Paralleling non-isolated multi-phase PWM converters
Author :
Ye, Zhihong ; Boroyevich, Dushan ; Lee, Fred C.
Author_Institution :
Center for Power Electron. Syst., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
In paralleling converters, it is desirable to have a directly connected structure because of compact size, low cost, simplicity and easy expandability. However, the parallel converters may have interactions due to their nonisolation. This paper develops an average model of the parallel converters in rotating coordinates. Based on the model, interactions between the parallel converters are analyzed. Because of its symmetrical structure, the parallel system can reduce both the common-mode dv/dt noise and the differential-mode current ripple with a proposed modulation scheme
Keywords :
AC-DC power convertors; DC-DC power convertors; PWM power convertors; rectifying circuits; average model; common-mode dv/dt noise; differential-mode current ripple; directly connected structure; modulation scheme; nonisolated multi-phase PWM converters paralleling; parallel converters; rotating coordinates; symmetrical structure; Costs; Current control; DC-DC power converters; Inductors; Noise reduction; Power electronics; Power supplies; Pulse width modulation converters; Rectifiers; Size control;
Conference_Titel :
Industry Applications Conference, 2000. Conference Record of the 2000 IEEE
Conference_Location :
Rome
Print_ISBN :
0-7803-6401-5
DOI :
10.1109/IAS.2000.883164
