前沿和后沿相位控制调光

无锡轻工大学随着高频逆变技术应用于一些可调光新型电子照明系统,原有的前沿相位控制调光器已不能适应这些新系统,一种后沿相位控制调光器已开发成功本文讨论了两种调光器的原理和应用范围,分析了由于误用所导致的危害,总结了两种调光器在应用于不同阻抗特性的可调光照明系统的正确选择LcadingEdgcandTrailingEdgcPhascControlDimmingAbstract:Asthehighfrequencyconvertingtechnologyisappliedinsomenewdimmableelectroniclightingsystem,thepreviousleadingedgephasecontroldimmercannotadapttothesenewsystem.Atrailingedgephasecontroldimmerhasbeenbevelopedsuccessfully.Thisarticlediscussestheprincipleandtheapplicationsoftwokindsofdimmers,andanalysesthedangercausedbymisuse.Aconclusionisderivedthatthecorrectselectionoftwokindsofdimmersusedfordimmablelightingsystemwhichhasadifferentimpedancecharacter.:,,,,,,,,,11,,Vin,RLVout,Vout:Vorms=Virms1Sin2/2P+(P-)/P21/2(0[[P))25),,,,VinCin,,:i=Cin(dVout/dt):IP=Vin/rr,,,=P/2,Vin,IP,,,,,,,,112122,,,,21,,,MOSFETIGBT,,Vin,T1T2,Vout,,,VoutVout,,,,,)26):Vorms=Virms1(/P)-(Sin2/2P)21/2(0[[P),,Vorms,Virmsdi/dtdv/dt,,RC3,,,,di/dt,EL=-Ldi/dtEL,,,4,,,,()112LowVoltagelightingAustralia:Lighting,1997,Vol.17,NO.2122,,:,1998,NO142000,/20002000323~26#,,,;#;#;#;##,,,,;#,()#,()34)27)