Analysis of reactive power in resonant converters

A number of resonant power converters are analyzed to derive the reactive power and RMS current circulating through the transformer. The results of the analysis are used to define design guidelines that minimize the circulating energy in the converters and maximize their efficiencies and power densities. The analyzed converter topologies include the half-bridge zero current switching quasi-resonant converter (HB ZCS-QRC), the half-bridge zero-voltage-switched multiresonant converter (HB ZVS-MRC), the constant-frequency half-bridge zero-voltage-switched multiresonant converter (CF HB ZVS-MRC), the HB ZVS that uses the magnetizing inductance as a resonant element (HB ZVS-MRC (L/sub M/)), and the full-bridge series-parallel-resonant converter (FB SPRC). The results of the analysis show that the HB ZCS-QRC and the soft-switched HB ZVS-MRC (L/sub M/) circulate relatively small amounts of power. However, the circulating power in the HB ZVS-MRC, CF HB ZVS-MRC, and SPRC is found to be considerably larger. The analysis is used to generate sets of characteristics for each converter that can be used in their design optimization based on the minimization of the circulating power.<<ETX>>

[1]  R. G. Hoft,et al.  Steady state frequency domain analysis of parallel and series parallel resonant converter , 1993, Proceedings Eighth Annual Applied Power Electronics Conference and Exposition,.

[2]  F.T. Dickens,et al.  A new family of resonant rectifier circuits for high frequency DC-DC converter applications , 1988, APEC '88 Third Annual IEEE Applied Power Electronics Conference and Exposition.

[3]  O. P. Mandhana,et al.  Steady state frequency domain analysis of parallel-series resonant converter , 1992, [Proceedings] APEC '92 Seventh Annual Applied Power Electronics Conference and Exposition.

[4]  C. Q. Lee,et al.  Theoretical and experimental studies of the LCC-type parallel resonant converter , 1990 .

[5]  R. Steigerwald,et al.  A comparison of half-bridge resonant converter topologies , 1987, 1987 IEEE Applied Power Electronics conference and Exposition.

[6]  Milan M. Jovanovic,et al.  Mode analysis of half-bridge zero-voltage-switched multi-resonant converter , 1989 .

[7]  F.C. Lee,et al.  DC analysis and design of forward multi-resonant converter , 1990, 21st Annual IEEE Conference on Power Electronics Specialists.

[8]  S. B. Dewan,et al.  Analysis and Design of a High-Frequency Resonant Converter Using LCC-Type Commutation , 1987, IEEE Transactions on Power Electronics.

[9]  Fred C. Lee,et al.  A new family of isolated zero-voltage-switched converters , 1991, PESC '91 Record 22nd Annual IEEE Power Electronics Specialists Conference.

[10]  Fred C. Lee,et al.  Evaluation and design of megahertz-frequency off-line zero-current-switched quasi-resonant converters , 1989 .

[11]  F.C. Lee,et al.  Constant-frequency zero-voltage-switched multi-resonant converters: analysis, design, and experimental results , 1990, 21st Annual IEEE Conference on Power Electronics Specialists.

[12]  J. A. Sabate,et al.  Effect of switch capacitance on zero-voltage switching of resonant converters , 1992, PESC '92 Record. 23rd Annual IEEE Power Electronics Specialists Conference.