Paralleling of single-phase AC/DC converter with power-factor correction

The article presents a paralleling of three two-switch forward converters, which operate at a constant switching-frequency to perform as a single-phase AC/DC converter with power-factor correction. Sliding mode control is employed to control the system. This approach is intended to increase the system reliability. Three 80 W 48 V converters that provide a 160 W maximum load have been designed and simulated. A comparison of the experimental and the simulated results for the same system specifications shows that there is close agreement between them.

[1]  P. F. Donoso-Garcia,et al.  Sliding-mode control for current distribution in parallel-connected DC-DC converters , 1998 .

[2]  Peng Xu,et al.  Topologies and design considerations for distributed power system applications , 2001, Proc. IEEE.

[3]  P. Kornetzky,et al.  Large-signal modeling of a single-switch power factor correction converter , 2000, 2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018).

[4]  J. Fernando A. da Silva,et al.  Constant-frequency sliding-mode and PI linear controllers for power rectifiers: a comparison , 1999, IEEE Trans. Ind. Electron..

[5]  Fred C. Lee,et al.  A classification and evaluation of paralleling methods for power supply modules , 1999, 30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321).

[6]  I. Batarseh,et al.  Small-signal modeling of a single-switch AC/DC power factor correction circuit , 1998 .

[7]  Lars Petersen,et al.  Advantages of using a two-switch forward in single-stage power factor corrected power supplies , 2000, INTELEC. Twenty-Second International Telecommunications Energy Conference (Cat. No.00CH37131).

[8]  I. Batarseh,et al.  Closed-loop design for two parallel connected converters with power factor correction , 1999, 30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321).

[9]  I. Batarseh,et al.  Large-signal simulation of a distributed power supply system with power factor correction , 1999, ISCAS'99. Proceedings of the 1999 IEEE International Symposium on Circuits and Systems VLSI (Cat. No.99CH36349).