High-Efficiency Regulation Method for a Zero-Current and Zero-Voltage Current-Fed Push–Pull Converter

A new high-efficiency regulation method for a zero-current and zero-voltage current-fed push-pull converter is presented. The method proposed is based on the use of a controlled transformer as a post-regulator, which adds or subtracts an additional voltage to the output filter of the converter. An auxiliary regulator, which only handles a percentage of the output power, controls this transformer, and therefore, results in much higher efficiency than a normal preregulator would have. The novelty of the presented converter is that regulation is achieved without affecting the zero-voltage and zero-current switching in any working conditions. Small- and large-signal models of the converter have been developed and a low-power prototype has been simulated and implemented. The good agreement, between the experimental simulations and theoretical results, validates the theoretical developments.

[1]  S.K. Mazumder,et al.  A Soft-Switching Scheme for an Isolated DC/DC Converter With Pulsating DC Output for a Three-Phase High-Frequency-Link PWM Converter , 2009, IEEE Transactions on Power Electronics.

[2]  S. Kotaiah,et al.  A Full-Bridge DC–DC Converter WithZero-Voltage-Switching Overthe Entire Conversion Range , 2008, IEEE Transactions on Power Electronics.

[3]  Jung-Min Kwon,et al.  High Step-Up Active-Clamp Converter With Input-Current Doubler and Output-Voltage Doubler for Fuel Cell Power Systems , 2009, IEEE Transactions on Power Electronics.

[4]  Jiann-Fuh Chen,et al.  Study and Implementation of a Single-Stage Current-Fed Boost PFC Converter With ZCS for High Voltage Applications , 2008, IEEE Transactions on Power Electronics.

[5]  A. Ferreres,et al.  Study of the Audio Susceptibility in Parallel Power Processing With a High-Power Topology , 2009, IEEE Transactions on Power Electronics.

[6]  N. Mohan,et al.  Three-Port Series-Resonant DC–DC Converter to Interface Renewable Energy Sources With Bidirectional Load and Energy Storage Ports , 2009, IEEE Transactions on Power Electronics.

[7]  X. Ruan,et al.  A Novel Zero-Voltage-Switching PWM Full-Bridge Converter , 2007, 2007 IEEE Power Electronics Specialists Conference.

[8]  P. Delporte,et al.  EPC and TWTA for telecommunication satellites , 1998 .

[9]  E. Adib,et al.  Zero-Voltage Transition Current-Fed Full-Bridge PWM Converter , 2009, IEEE Transactions on Power Electronics.

[10]  P. Delporte,et al.  ESA qualified EPC for telecommunication satellites TWTA , 2000, Abstracts. International Vacuum Electronics Conference 2000 (Cat. No.00EX392).

[11]  S.H. Weinberg.  A New High-Efficiency Zero-Voltage, Zero-Current Switching Topology , 2006, 2006 IEEE International Vacuum Electronics Conference held Jointly with 2006 IEEE International Vacuum Electron Sources.

[12]  Stanislaw Jalbrzykowski,et al.  Current-Fed Resonant Full-Bridge Boost DC/AC/DC Converter , 2008, IEEE Transactions on Industrial Electronics.

[13]  Eugene H. Kim,et al.  High step-up resonant push-pull converter with high efficiency , 2009 .

[14]  F.C. Lee,et al.  Σ/sigma DC/DC conversion for computing and telecom applications , 2008, 2008 IEEE Power Electronics Specialists Conference.

[15]  A. H. Weinberg,et al.  A new zero voltage and zero current power-switching technique , 1989 .

[16]  P.K. Jain,et al.  New ZVS Phase Shift Modulated Full-Bridge Converter Topologies With Adaptive Energy Storage for SOFC Application , 2008, IEEE Transactions on Power Electronics.

[17]  Huai Wang,et al.  A ZCS Current-Fed Full-Bridge PWM Converter With Self-Adaptable Soft-Switching Snubber Energy , 2009, IEEE Transactions on Power Electronics.

[18]  F.C. Lee,et al.  High efficiency quasi-parallel Voltage Regulators , 2008, 2008 Twenty-Third Annual IEEE Applied Power Electronics Conference and Exposition.

[19]  M. Gambarara,et al.  New generation EPC for medium power TWTs , 1998 .

[20]  P. Enjeti,et al.  A Three-Phase Current-Fed DC/DC Converter With Active Clamp for Low-DC Renewable Energy Sources , 2008, IEEE Transactions on Power Electronics.

[21]  Ivo Barbi,et al.  Isolated DC-DC converters with high-output voltage for TWTA telecommunication satellite applications , 2003 .

[22]  J.B. Ejea,et al.  Small-signal modeling of a controlled transformer parallel regulator as a multiple output converter high efficient post-regulator , 2004, IEEE Transactions on Power Electronics.

[23]  Jiann-Fuh Chen,et al.  Study and Implementation of a Current-Fed Full-Bridge Boost DC–DC Converter With Zero-Current Switching for High-Voltage Applications , 2008, IEEE Transactions on Industry Applications.

[24]  Huafeng Xiao,et al.  A ZVS Bidirectional DC–DC Converter With Phase-Shift Plus PWM Control Scheme , 2007, IEEE Transactions on Power Electronics.

[25]  Enrique Maset,et al.  A high-efficiency regulation technique for a zero-voltage zero-current power switching converter , 1998 .

[26]  J.W. Kolar,et al.  Design of a 5-kW, 1-U, 10-kW/dm$^{\hbox{3}}$ Resonant DC–DC Converter for Telecom Applications , 2009, IEEE Transactions on Power Electronics.

[27]  S. Tiwari,et al.  Characteristics and Design of an Asymmetrical Duty-Cycle-Controlled LCL-T Resonant Converter , 2009, IEEE Transactions on Power Electronics.

[28]  J.B. Ejea,et al.  The Sequential Switching Shunt Maximum Power Regulator and its Application in the Electric Propulsion System of a Spacecraft , 2007, 2007 IEEE Power Electronics Specialists Conference.

[29]  Jung-Min Kwon,et al.  High-Efficiency Fuel Cell Power Conditioning System With Input Current Ripple Reduction , 2009, IEEE Transactions on Industrial Electronics.