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This letter proposes a simple and practical way to improve the efficiency of an adaptive-energy-storage (AES) full bridge converter. Since the turns ratio of coupled inductor is 1 in the conventional AES converter, the leading-leg and lagging-leg have the same peak current. By modifying turns ratio of coupled inductor, part of leading-leg current can be steered to the lagging-leg; thus, the peak current...
In order to reduce the power loss of phase-shift full-bridge(PSFB) converter under light load and standby conditions, this paper proposes a simple control method to achieve zero-voltage switching (ZVS) at light load without any additional auxiliary components. The converter with the proposed control method operates in discontinuous conduction mode (DCM) by decreasing switching frequency and all the...
Based on analyzing the physical structure and operational characteristics of high-frequency power pulse transformer, both the sub-circuit model and numerical model are presented. In the sub-circuit model, the distributed capacitances among transformer windings are reduced to concentration parameter components. It improves the practicability. In the numerical model, the piecewise modeling method is...
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