1——ModernPowerElectronicsandVariableFrequencyRegulatingSpeedTechnique—ABridgetoITSocietyforTraditionalIndustry100083Abstract:Thispaperpresentsthebasicconceptandthebrightfeaturesofthemodernpowerelectronicsandvariablefrequencyregulatingspeedtechnique,anditsperspectivedevelopmentandtheapplicationfieldshavebeenalsointroduced.Keywords:modernpowerelectronicstraditionalindustrysavepower1202119202130501/101/22KASSAKIAN2HEUMAN50SCR80GTOGTRPOWERMOSFETIGBTSITAC—DCDC—DCDC—ACAC—AC33.180%7020%30%10t/h22kW32497kWh113817.110.23kWh4.62.524.230%/15%20%3FMSCIMS——703.2101106A902605%10702010%13%20%50%504[1]..,1998,(6).[2].PWM.,1998,(8).[3]..,1999,(2).196219826198712-