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| The Analysis of Soft-Switching of the Phase Shift + PWM Control Dual Boost Half-Bridge Bidirectional DC-DC Converter |
| Xiao Xu,Zhang Fanghua,Zheng Su |
| Jiangsu Key Laboratory of New Energy Generation and Power Conversion Nanjing University of Aeronautics and Astronautics Nanjing 210016 China |
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Abstract Phase shift +PWM control method has the advantages of phase shift and PWM control method. It can reduce the current stress, conduction loss and the circulation energy of the converter. It can also improve the ability of transmission power of the converter and broaden the range of zero voltage switch(ZVS) of the switches. In this paper, phase shift +PWM control dual Boost half-bridge bidirectional DC-DC converter is studied and the equivalent circuit models as well as the expressions of inductor current and capacitor voltage in dead time in a variety of work situations are given. The soft-switching conditions, as well as the non-ideal impact elements of the switches to achieve soft switching are analyzed. Finally, a method is given in the paper to design the parameters to get ZVS of all switches in the setting power condition. The correctness of the theoretical analysis and the method are verified by simulation and experiment.
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Received: 25 July 2013
Published: 14 September 2015
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2015, Vol. 30 
