Phase-controlled series-parallel resonant converter

A constant-frequency, phase-controlled, series-parallel resonant DC-DC converter is introduced, analyzed in the frequency domain, and experimentally verified. To obtain the DC-DC converter, two identical series-parallel resonant inverters are paralleled and the resulting phase-controlled resonant inverter is loaded by a voltage-driven rectifier. The converter can regulate the output voltage at a constant switching frequency in the range of load resistance from full-load resistance to infinity while maintaining good part-load efficiency. The efficiency of the converter is almost independent of the input voltage. For switching frequencies slightly above the resonant frequency, power switches are always inductively loaded, which is very advantageous if MOSFETs are used as switches. Experimentally results are given for a converter with a center-tapped rectifier at an output power of 52 W and a switching frequency of 127 kHz. The measured current imbalance between the two inverters was as low as 1.2:1. >

[1]  P. Jain,et al.  A constant frequency parallel tuned resonant DC/DC converter for high voltage applications , 1992, PESC '92 Record. 23rd Annual IEEE Power Electronics Specialists Conference.

[2]  R. J. King.  A design procedure for the phase-controlled parallel-loaded resonant inverter , 1989 .

[3]  Ira J. Pitel.  Phase-Modulated Resonant Power Conversion Techniques for High-Frequency Link Inverters , 1986, IEEE Transactions on Industry Applications.

[4]  Praveen Jain,et al.  A phase-shift modulated double tuned resonant DC/DC converter: analysis and experimental results , 1992, [Proceedings] APEC '92 Seventh Annual Applied Power Electronics Conference and Exposition.

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

[6]  M. Kazimierczuk.  Synthesis of phase-modulated resonant DC/AC inverters and DC/DC convertors , 1992 .

[7]  Fred C. Lee,et al.  Constant-frequency, clamped-mode resonant converters , 1987 .

[8]  Frederick H. Raab,et al.  Efficiency of Outphasing RF Power-Amplifier Systems , 1985, IEEE Trans. Commun..

[9]  H. Chireix.  High Power Outphasing Modulation , 1935, Proceedings of the Institute of Radio Engineers.

[10]  Ashoka K. S. Bhat,et al.  Steady-state analysis of a LCC-type load commutated high-frequency inverter , 1988, PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference.

[11]  F.C.Y. Lee,et al.  Constant-frequency parallel-resonant converter , 1989 .

[12]  P. Jain,et al.  A constant frequency resonant DC/DC converter with zero switching losses , 1991, Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting.

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

[14]  M. Kazimierczuk,et al.  Analysis and design of parallel resonant convertor at high Q/sub L/ , 1992 .

[15]  Marian K. Kazimierczuk,et al.  Analysis of series-parallel resonant converter , 1993 .

[16]  Marian K. Kazimierczuk,et al.  Class-D zero-voltage-switching inverter with only one shunt capacitor , 1992 .

[17]  Dariusz Czarkowski,et al.  Simulation and experimental results for class D series resonant inverter , 1992, [Proceedings] Fourteenth International Telecommunications Energy Conference - INTELEC '92.