Analysis of a parallel resonant converter with secondary-sideresonance |
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Authors: | Swamy MM Bhat AKS |
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Institution: | Dept. of Electr. & Comput. Eng., Oregon State Univ., Corvallis, OR; |
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Abstract: | A high-frequency (HF) link parallel resonant DC/DC converter operating in the lagging power factor mode with the resonating capacitor on the secondary side of the HF transformer is analyzed using a state-space approach. Closed-form solutions (except for the duration of diode conduction) are obtained for steady-state conditions, and design curves are obtained. A method of obtaining optimum operating point under certain constraints is developed and is used as the basis of a simple design procedure. A theoretical study comparing the performance of three MOSFET-based 1-kW converters with different transformer turn ratios under load changes from rated-load to 10% load is carried out. Experimental results obtained with these converters with different transformer turn ratios are also presented |
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