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Energies 2018, 11(2), 413; doi:10.3390/en11020413

Frequency-Controlled Current-Fed Resonant Converter with No Input Ripple Current

Department of Electrical Engineering, National Yunlin University of Science and Technology, Yunlin 640, Taiwan
Author to whom correspondence should be addressed.
Received: 25 January 2018 / Revised: 8 February 2018 / Accepted: 9 February 2018 / Published: 11 February 2018
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This paper studies a frequency-controlled current-fed resonant circuit. The adopted direct current (DC)-to-DC converter contains two boost circuits and a resonant circuit on the primary side. First, two boost circuits are connected in parallel to achieve voltage step-up and reduce input ripple current by using interleaved pulse-width modulation. Therefore, the size and current rating of boost inductors are decreased in the proposed converter. Second, the boost voltage is connected to the resonant circuit to realize the mechanism of the zero-voltage switching of all active switches and zero-current switching of all diodes. Two boost circuits and a resonant circuit use the same power devices in order to lessen the switch counts. The voltage doubler topology is adopted on the secondary side (high-voltage side). Therefore, the voltage rating of diodes on the high-voltage side is clamped at output voltage. The feasibility of the studied circuit is confirmed by the experimental tests with a 1 kW prototype circuit. View Full-Text
Keywords: current-fed resonant converter; frequency control; ripple current; boost converter current-fed resonant converter; frequency control; ripple current; boost converter

Figure 1a

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Lin, B.-R.; Lin, G.-H. Frequency-Controlled Current-Fed Resonant Converter with No Input Ripple Current. Energies 2018, 11, 413.

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