电子镇流器教学课件

8 R.Verderber,Electronic Ballast lmproves Efficiency,Elec-tronic Consultant,Vol.60,Nov/Dec 1980,pp.22-26.9 W.R.Alling,The Integration of Microcomputers and Con-trollable Output Ballasts-A New Dimension in Lighting Con-trol.IEEE Transactions on industrial Application,Sept/Octl984,pp.I198-1205.10 J.Spangler,A.K.Behera,Power Factor Correction Tech-niques Used for Fluorescent Lamp Ballast,Proceedings ofIELE Industrial Applications Society Annual Meeting,1991,DearbOm,MI,pp.1836-1841.参考文献（放电）1ll W.-J.Gu and K.Harada,Novel SelfExcited PWM Con-verters with Zero-Voltage-Switched Resonant TransitionUsing a Saturable Core,Proceedings of lhe Applied PowerElectronics Conference,Feb.1992,Boston,ma,pp.58-65.12 M.K.Kazimierczuk and W.Szaraniec,Electronic Ballastfor Fluorescent Lamps,IEEE Transactions On Power Elec-tronics.Vol.8,No.4.Oct.1993,pp.386-395.13I M.Gulko and S.Ben-Yaakov,Current-Sourcing Push-PullParallel-Resonance Inverter(CS-PPBi)Theory and Applica-tion as a Fluorescent Lamp Driver,Proceedings of the Ap-plied Power Electronics Conference,1993,San Diego,CA,pp.411-417.14 M.C.Cosby and R.M.Nelms,Designing a Parallel-LoadedResonant Inverter for an Electronic Ballast Using the Fun-damental Approximation,Proceedings of the Applied PowerElectronics Conference,1993,San Diego,CA,pp.41 8-423.15 C.Licitra,L.Malesani,G.Spiazzi,P.Tenti,A.Testa,Single-Ended Soft-Switching Electronic Ballast with UnityPower Factor,Proceedings ofIEEE Industrial ApplicationsSociety Annual Meeting,1991,Dearborn,Mi,pp.953-958.参考文献（电路）2性能指标包含管电流峰值因数、适当的灯丝加热电压、灯管开路电压、高的功率转换效率及元件之电压及电流极限参数。16 W.R.Alling,Important Design Parameter for Solid-StateBallasts,IEEE Transactions on industry Applications.Vol.25,NO.2.March/April 1989,pp.203-207.17 E.C.Nlio,K.H.Jee and G.H.Cho,New Soft-SwitchingInverter for High Efficietcy Electronic Ballast with SimpleStrtlcture,Int.J Electronics,1991,Vol.71,No.3,pp.529-542.3电子镇流器基本结构4荧光灯电子镇流器型号命名方法ZBK74004镇流器型号命名方法专业标准规定，电子镇流器型号命名法如下所示：5二、电子镇流器的基本电路类型核心部分为换流器，分为串联，并联两种。61.电压源串联谐振换流器半桥式串联谐振换流器78910111213142.全桥式串联谐振换流器原理图：15实用电路：163.电流源并联谐振换流器半桥式并联谐振换流器，原理图：17实用电路181920三、分析和设计212223启动电路设计启动电路设计考虑驱动电流和时间常数考虑驱动电流和时间常数24稳态工作稳态工作等效电路等效电路25波形图波形图2627变压器匝数比确定变压器匝数比确定28设计程序设计程序确定灯管数确定灯管数M，确定电压，确定电压Vnl，灯管稳态工作电压，灯管稳态工作电压Vl，灯管，灯管稳态工作电流稳态工作电流Il，等效电阻，等效电阻Rl。选工作频率选工作频率fnl和和fl，fnlfl确定确定Cl:29确定匝数比：确定匝数比：3031设计举例设计举例灯管资料灯管资料32选择镇流电容选择镇流电容33匝数比匝数比34取取35选择晶体管选择晶体管36设计数据汇总：设计数据汇总：373839404142功率因子校正（一）共轭电感式：如图所示，利用一大电感（通常为矽钢片铁心）来平缓输入电流突波，以达到抑制谐波失真与提高功率因数的目的。43（二）部份滤波式：由于共轭电感式功因校正线路之共轭电感於高频操作时会有噪声，故改采部份滤波式线路消除杂音。44（三）主动式功率因数校正 由于以上两种被动式功因校正电路有体积大，效率低且未能达到功因098以上等缺点，因此有主动式功因技术的出现，图为一典型的系统方块图，然而由于其外加线路多，因此成本提高。45464748495051525354谢谢！谢谢！5556