A comparison of voltage-mode soft-switching methods for PWM converters

A comparison study was conducted to characterize the loss mechanisms, component stresses, and overall efficiencies of a group of voltage-mode soft-switching pulse width modulation (PWM) methods, including two methods developed by the authors. All soft-switching methods in the selected group allow zero voltage turn-on and turn-off of the main switch and utilize a single auxiliary switch with some resonant components. Advantages and disadvantages are identified for each method. Experimental verification for each soft-switching method is provided. It was found that only those methods that softly switch the auxiliary switch, minimize redirection current, and recover the auxiliary circuit energy improve efficiency over most of the load range.

[1]  G. Ivensky,et al.  Optimization of the auxiliary switch components in a flying capacitor ZVS PWM converters , 1995, Proceedings of 1995 IEEE Applied Power Electronics Conference and Exposition - APEC'95.

[2]  G. Ivensky,et al.  Optimization of the auxiliary switch components in a flying capacitor ZVS PWM converters , 1995, Eighteenth Convention of Electrical and Electronics Engineers in Israel.

[3]  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.

[4]  Slobodan Cuk,et al.  Novel soft-switching full-bridge converter with magnetic amplifiers , 1994, Proceedings of Intelec 94.

[5]  K. M. Smith,et al.  A comparison of voltage mode soft switching methods for PWM converters , 1996, Proceedings of Applied Power Electronics Conference. APEC '96.

[6]  L. C. de Freitas,et al.  A high-power high-frequency ZCS-ZVS-PWM buck converter using a feedback resonant circuit , 1993 .

[7]  Slobodan Cuk,et al.  Novel soft-switching converter with magnetic amplifiers , 1993, Proceedings of IECON '93 - 19th Annual Conference of IEEE Industrial Electronics.

[8]  Fred C. Lee,et al.  A comparative study of switching losses of IGBTs under hard-switching, zero-voltage-switching and zero-current-switching , 1994, Proceedings of 1994 Power Electronics Specialist Conference - PESC'94.

[9]  G. Joos,et al.  A novel zero-voltage switched PWM boost converter , 1995, Proceedings of PESC '95 - Power Electronics Specialist Conference.

[10]  D. Tollik,et al.  High efficiency telecom rectifier using a novel soft-switched boost-based input current shaper , 1991, [Proceedings] Thirteenth International Telecommunications Energy Conference - INTELEC 91.

[11]  C. Q. Lee,et al.  Zero-voltage-transition converters using an inductor feedback technique , 1994, Proceedings of 1994 IEEE Applied Power Electronics Conference and Exposition - ASPEC'94.

[12]  K. Harada,et al.  Saturable inductor commutation for zero voltage switching in DC-DC converter , 1990, International Conference on Magnetics.

[13]  Fred C. Lee,et al.  Novel zero-voltage-transition PWM converters , 1992 .

[14]  George C. Verghese,et al.  Principles of Power Electronics , 2023 .

[15]  M. Jovanovic,et al.  An improved zero-voltage-switched PWM converter using a saturable inductor , 1991, PESC '91 Record 22nd Annual IEEE Power Electronics Specialists Conference.

[16]  I. Barbi,et al.  Comparison of experimental losses among six different topologies for a 1.6 kW boost converter, using IGBTs , 1995, Proceedings of PESC '95 - Power Electronics Specialist Conference.