Mitigating voltage stress on switches during soft switching transitions Mitigating voltage stress on switches during soft switching transitions requires careful topology design, auxiliary circuit optimization, and proper control strategies to achieve soft switching without increasing device stress. Key Mitigation Strategies 1. Use Improved Soft-Switching Topologies Improved Zero-Current Transition (ZCT) Converters achieve: Zero-current switching at both turn-on and turn-off for all main and auxiliary switches Voltage/current stress similar to conventional PWM converters (no extra stress) Significant reduction in switching loss while maintaining stress levels Key advantage: These topologies achieve soft-switching with minimum increase of device voltage/current stresses and converter circulating energy. 2. Novel Active Snubber Cell Design A novel ZVT-PWM full-bridge converter with active snubber provides: No extra voltage stress on semiconductor devices Main switch: ZVS tu...
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