Soft-switching operation of edge-resonant output-inductor-less full-bridge converter

Output-inductor-less full-bridge converter for a High-Voltage Direct-Current power distribution system has been proposed. This proposed circuit topology suppresses the surge voltage due to the secondary-side diode's recovery, and miniaturizes the converter because the number of circuit components is reduced. On the other hand, some problems occur, such as the increasing switching-loss of primary switches and another high-frequency noise generation. This paper proposes a novel synchronous rectifier driving for the output-inductor-less full-bridge converter in order to solve these problems, and examines the noise reduction effect, and the relationship between ZVS operation conditions and circuit parameters. The proposed method does not need an external component, and then the smaller size is maintained. Furthermore, the experimental results confirm the power loss reduction of 20W in a wide load range, and also the noise reduction.

[1]  Keiichi Hirose,et al.  Evaluation results of power supply to ICT equipment using HVDC distribution system , 2010, Intelec 2010.

[2]  I. D. Jitaru,et al.  A 3 kW soft switching DC-DC converter , 2000, APEC 2000. Fifteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.00CH37058).

[3]  Chen Zhao,et al.  Optimum Design Consideration and Implementation of a Novel Synchronous Rectified Soft-Switched Phase-Shift Full-Bridge Converter for Low-Output-Voltage High-Output-Current Applications , 2009 .

[4]  J. W. Kolar,et al.  An optimized, 99% efficient, 5 kW, phase-shift PWM DC-DC converter for data centers and telecom applications , 2010, The 2010 International Power Electronics Conference - ECCE ASIA -.

[5]  K. Yoshida,et al.  ZVS-PWM full-bridge converter using active current clamping with synchronous rectifiers , 1999, 30th Annual IEEE Power Electronics Specialists Conference. Record. (Cat. No.99CH36321).

[6]  Keiichi Hirose,et al.  Development of 400 Vdc power distribution system and 400 Vdc output rectifier , 2009, INTELEC 2009 - 31st International Telecommunications Energy Conference.

[7]  A. Pratt,et al.  Evaluation of 400V DC distribution in telco and data centers to improve energy efficiency , 2007, INTELEC 07 - 29th International Telecommunications Energy Conference.

[8]  T. Ninomiya,et al.  High-efficiency high-power dc-dc converter for energy and space saving of power-supply system in a data center , 2011, 2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[9]  Pritam Das,et al.  A novel full load range ZVS DC-DC full-bridge converter with natural hold-up time operation , 2015, 2015 IEEE Applied Power Electronics Conference and Exposition (APEC).

[10]  P. K. Jain,et al.  A Novel ZVZCS Full-Bridge DC/DC Converter Used for Electric Vehicles , 2012, IEEE Transactions on Power Electronics.

[11]  A. Jangwanitlert,et al.  Phase-shifted PWM full-bridge DC-DC converters for automotive applications: reduction of ringing voltages , 2004, Power Electronics in Transportation (IEEE Cat. No.04TH8756).

[12]  Tamotsu Ninomiya,et al.  Control characteristics improvement of full-bridge DC-DC converter with snubber capacitor , 2014, 2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA).

[13]  W. Eberle,et al.  A Zero-Voltage Switching Full-Bridge DC--DC Converter With Capacitive Output Filter for Plug-In Hybrid Electric Vehicle Battery Charging , 2013, IEEE Transactions on Power Electronics.

[14]  Tamotsu Ninomiya,et al.  Non-Dissipative Snu Applied to a Frc , 2002 .

[15]  J. Itoh,et al.  Analysis and optimization design of snubber cricuit for isolated DC-DC converters in DC power grid , 2012, 2012 International Conference on Renewable Energy Research and Applications (ICRERA).