中頻電爐串聯(lián)半橋逆變器調(diào)功原理分析.Stamped

1、232009Journal of Shandong U niversity of Technology (Natural Science Edition):1672-6197 (2009)01-0097.03(1.2.2255049;255090)W9:TM131" 1Analysis on t he power adjust ment pr in ci pie of series ha If-bridge in vertermain circuit of Thyristor intermediate frequency furnaceCUI Jing-ping1 , ZOU Li1

2、 , ZOU Xue2(1. School of Electrical Engineering . Shandong Universit y of Technology. Zbo 255049 . China2. Z bo Liming Electric Appliance Co. Ltd Zbo 255090 . China)Abstract : In tlis paper the voltage characteristics of load circuit with is half-bridge inverter were analyzed using the zero inp ut c

3、haracteristics of secondorder circuit. The relationship between the pha se-changing control a ngle and power modulation vol tag: was analyzed, and the working characteristics and working wave11 W"of series inverter circuit were simulated.¥cy w)rds: me di u nr frequency furnace; series reso

4、nance; half- bridge inverter; induction heatingii j121WPWM:2008-09-241311,2 Ua.( Vi) Vi L R Cl;:V. L R1(1983-) E-mail:cuijingping0916 98)2009398)2009C2R一 2L1 RLC*(2L)2oeUo一 P2Uo 0 e1 sin( t + )2Uci =0, CiC.UdUuG(2, ii. = 0GV,；QC GD.,u,G12Ud,V2 U，,.2RLCRLC,9KVLd UlLC J 2 + RC牛+ 0 dt(1)Uc = Ae11(1)Rh2

5、L(R) 21?LCRLC(a)；(b)(c)90 ,55(2)2 Ud 2 UdCos i,? UdCosUc =e * sin( t + )UwR<23995Cl2 Ud . Ij,v2.6,T, t4645kg9 Ci = C2 =900c 6F ; L = O.57e 4H;Ud = 1 200V25OHz££/h92) w250 Hz,500 H 乙Hl .J.2006 J4):22-26.2 M:,1983.3 M|:.1996.|4 J Kiune H. Hatanuka Y.Nakaoka Nl. Q)sl effective phase shilled pulse modulation soft switching hight frequency inverter for induction heating applacations|J