A zero-voltage and zero-current switching full bridge DC-DC converter with transformer isolation

A new primary-side-assisted zero-voltage and zero-current switching full bridge DC-DC converter with transformer isolation is proposed. The proposed DC-DC converter uses only one auxiliary transformer and two diodes to obtain ZCS for the leading leg. It has a simple and robust structure, and load current control capability even in short circuit conditions, The possibility of magnetic saturation due to asymmetricity of circuits or transient phenomena is greatly reduced, which is a very attractive feature in DC-DC converters with transformer isolation. The power rating of the auxiliary transformer is about 10% of that of the main transformer. Operation of a 12 kW prototype designed for welding application was verified by experiments.

[1]  D. P. Shattuck,et al.  A silicon-controlled rectifier inverter with improved commutation , 1961, Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics.

[2]  F.C. Lee,et al.  Design considerations for high-voltage high-power full-bridge zero-voltage-switched PWM converter , 1990, Fifth Annual Proceedings on Applied Power Electronics Conference and Exposition.

[3]  I. Barbi,et al.  A true PWM zero-voltage switching pole, with very low additional RMS current stress , 1991, PESC '91 Record 22nd Annual IEEE Power Electronics Specialists Conference.

[4]  I. Barbi,et al.  A family of DC-to-DC PWM converters using a new ZVS commutation cell , 1993, Proceedings of IEEE Power Electronics Specialist Conference - PESC '93.

[5]  J. A. Sabate,et al.  Zero-voltage and zero-current-switching full bridge PWM converter for high power applications , 1994, Proceedings of 1994 Power Electronics Specialist Conference - PESC'94.

[6]  Fred C. Lee,et al.  Zero voltage and zero current switching full bridge PWM converter using secondary active clamp , 1996 .

[7]  Yoon-Ho Kim,et al.  An improved soft switching PWM FB DC/DC converter for reducing conduction losses , 1996 .

[8]  Dong-Wook Yoo,et al.  Novel zero-voltage and zero-current-switching (ZVZCS) full bridge PWM converter using transformer auxiliary winding , 1997, PESC97. Record 28th Annual IEEE Power Electronics Specialists Conference. Formerly Power Conditioning Specialists Conference 1970-71. Power Processing and Electronic Specialists Conference 1972.

[9]  Dong-Wook Yoo,et al.  Novel zero-voltage and zero-current-switching (ZVZCS) full bridge PWM converter with low output current ripple , 1997, Proceedings of Power and Energy Systems in Converging Markets.

[10]  J.G. Cho,et al.  Novel zero-voltage and zero-current-switching (ZVZCS) full bridge PWM converter using a simple auxiliary circuit , 1998, APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition.

[11]  J. B. Vieira,et al.  A boost PWM soft-single-switched converter with low voltage and current stresses , 1998 .

[12]  Jung-Goo Cho,et al.  Novel zero-voltage and zero-current-switching full-bridge PWM converter using a simple auxiliary circuit , 1999 .

[13]  Gyu-Hyeong Cho,et al.  Zero-voltage and zero-current switching full bridge DC-DC converter for arc welding machines , 1999 .

[14]  Dong-Wook Yoo,et al.  Novel zero-voltage and zero-current-switching full bridge PWM converter using transformer auxiliary winding , 2000 .

[15]  Yoon-Ho Kim,et al.  An improved ZVZCS PWM FB DC/DC converter using the modified energy recovery snubber , 2000, APEC 2000. Fifteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.00CH37058).

[16]  Evandro Soares da Silva,et al.  An improved boost PWM soft-single-switched converter with low voltage and current stresses , 2001, IEEE Trans. Ind. Electron..