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A full-bridge DC-DC converter employing a diode rectifier in the output experiences a severe voltage overshoot and oscillation problem across the diode rectifier caused by interaction between junction capacitance of the rectifier diode and leakage inductance of the transformer. The pronounced reverse-recovery current of high-power diodes significantly contributes to these issues by increasing power...
A 260 kVA inverter has been developed with a passive soft-switching snubber. The main circuit configuration and prototyping are described. Optimization of the passive soft-switching snubber parameters has been made to control the voltage overshoot across the switches, minimize snubber and inverter losses, and effectively limit dv/dt and di/dt during activation. An efficiency higher than 98.5% has...
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