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This paper proposes a three-level bidirectional DC-DC converter with an auxiliary inductor for wide zero-voltage switching (ZVS) in high-output voltage applications. The auxiliary inductor is connected across the middle node of the split flying capacitors and the center tap of the secondary winding in the transformer. The phase-shift angle in three-level stage can facilitate the ZVS of the switches...
A hybrid phase shifted full bridge (PSFB) and LLC half bridge (HB) dc-dc converter for low-voltage and high-current output applications is proposed in this paper. The PSFB shares its lagging leg with the LLC-HB and their outputs are parallel connected. When the output current is small, the energy of LLC circuit in combination with the energy stored in the leakage inductance of PSFB's transformer can...
This letter proposes an input-series-output-parallel derived dc–dc converter composed of two phase-shift full-bridge (PSFB) dc–dc converters and two auxiliary LC networks. Each LC network is connected between the leading-leg midpoint of a module and the lagging-leg midpoint of the other one. For conventional PSFB converters, the lagging-leg switches may lose zero-voltage switching (ZVS) conditions...
Input -series connected DC/DC converters based on one transformer is proposed for high voltage input and high power applications. Phase-shifted full-bridge (PS-FB) control strategy with common duty cycle control is adopted for each converter. Operation principles of the proposed converter are analyzed. Although primary currents vary for magnetic coupling and turns mismatch, combined peak current control...
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