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A novel soft-switching inverter using two small coupled magnetics in one resonant pole is proposed to ensure the main switches operating at zero-voltage switching from zero load to full load and the auxiliary switches at zero-current switching with load adaptability and small current stress. Since independent coupled magnetics structure avoids the unwanted magnetizing current freewheeling loop, the...
In this paper, a novel quasi-parallel resonant DC-link inverter is presented. This circuit has only one auxiliary switch which is turned on under zero current condition and is turned off under zero voltage condition. Also, to achieve soft switching for the inverter main switches, no DC link voltage sensor is required. These properties simplify the control circuit greatly. The proposed converter is...
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