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Study and Implementation of a Current-Fed Full-Bridge Boost DC– DC Converter With Zero-Current Switching for High-Voltage Applications ABSTRACT: This paper presents a comprehensive study of a current-fed full-bridge boost dc–dc converter with zero-current switching (ZCS), based on the constant on-time control for high voltage applications. The current-fed full-bridge boost converter can achieve ZCS by utilizing the leakage inductance and parasitic capacitance as the resonant tank. In order to achieve ZCS under a wide load range and with various input voltages, the turn-on time of the boost converter is kept constant, and the output voltage is regulated via frequency modulation. The steady-state analysis and the ZCS operation conditions under various load and input voltage conditions are discussed. Finally, a laboratory prototype converter with a 22–27-V input voltage and 1-kV/1-kW output is implemented to verify the performance. The experimental results show that the converter can achieve high output voltage gains, and the highest efficiency of the converter is 92% at full-load condition with an input voltage of 27 V.
KEYWORDS: 1. Current fed 2. High voltage 3. Zero-current switching (ZCS)
SOFTWARE: MATLAB/SIMULINK
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Gmail:asokatechnologies@gmail.com, Website: http://www.asokatechnologies.in
0-9347143789/9949240245