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Soft-Switching Technique in Pulse Width Modulation Inverters

         

摘要

1 Introduction Withthedevelopmentofthe powerelectronicstechnology ,stationarypowerconvertingdevicessuchasAC DCconvertersandDC ACinvertersareappliedinvariousindustrialareas .However ,thishasledtosomeproblems ,e .g .theincreaseofharmonicsinpowersupply ,andtheEMIcausedbyrapidlychang ingvoltageandcurrentstresses .ThetechnicaltrendincombattingEMIistorealizePWM powerconver sionwithsoft switching .Thistechniqueusuallyusesexternalcircuitsinconjunctionwithcontrollableswitches,whichcomplicatethemaincircuit.In 3 phase...

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