Design and analysis of series resonant converter for 30kW industrial magnetron

This paper deals with the design and analysis of 42kW (14kV, 3A) high voltage power supply for 30kW industrial magnetron. The developed high voltage power supply was designed based on the series resonant converter discontinuous conduction mode (DCM) to takes advantage of the superior arc protection because of their current source characteristic. The detail design procedure for resonant tank and high voltage transformer with respect to the input and output specifications is described based on the basic analysis of DCM series resonant converter. A comparative study with theoretical equations, simulation and experimental results was given. It provides the output voltage and current characteristics with variable switching frequency and verifies the advantage of this topology such as the function of arc protection without any additional protection circuit and high efficiency because of the zero current or zero voltage switching. Also, the developed power supply was tested with 30kW magnetron and the results prove the reliability and robustness of proposed scheme.

[1]  V. Vorperian,et al.  A complete DC analysis of the series resonant converter , 1982, 1982 IEEE Power Electronics Specialists conference.

[2]  M. H. Pong,et al.  Design and analysis of discontinuous mode series resonant converter , 1994, Proceedings of 1994 IEEE International Conference on Industrial Technology - ICIT '94.

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

[4]  J.S. Kim,et al.  A constant current high voltage capacitor charging power supply for pulsed power applications , 2001, PPPS-2001 Pulsed Power Plasma Science 2001. 28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference. Digest of Papers (Cat. No.01CH37251).

[5]  A.F. Wittulski,et al.  Steady-State Analysis of the Series Resonant Converter , 1985, IEEE Transactions on Aerospace and Electronic Systems.

[6]  Robert L. Steigerwald.  A comparison of half-bridge resonant converter topologies , 1987 .

[7]  S. R. Jang,et al.  Design and testing of the high voltage capacitor charger for 150kJ pulsed power application , 2009, 2009 IEEE Pulsed Power Conference.

[8]  R.W. Erickson,et al.  Design of the Series Resonant Converter for Minimum Component Stress , 1986, IEEE Transactions on Aerospace and Electronic Systems.