A new soft-switched high step-up DC-DC converter with dual coupled inductors

Publication Type:
Conference Proceeding
Citation:
Proceedings of the International Conference on Power Electronics and Drive Systems, 2018, 2017-December pp. 863 - 868
Issue Date:
2018-02-09
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© 2017 IEEE. This paper introduces a new efficient high step-up DC-DC converter with a shared input path and dual series coupled inductors at the output. This converter is suitable for high power applications due to its shared input current that puts low current stresses on the low voltage side switches. The proposed converter uses active clamp circuits with a shared clamp capacitor for main switches. In addition to the active clamp circuit, the leakage energy is recycled to the output by the act of an integrated regenerative snubber. Both active and passive switching devices operate with soft-switching performance i.e. Zero Voltage Switching (ZVS) and Zero Current Switching (ZCS). Principle of operation and mathematical derivation are presented and verified through simulation and experimental results of a 1kW prototype.
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