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    > IGBTɢ >

    IGBTĺڰֱnba߹ۿط-ڰֱnbaؿĵЧ·ģ

    뵼ԿʹòͬĵЧ·ģ
    ·ģ
     ͼ 1: ·ģ (Continued fraction circuit,ҲCauerģ, Tģͻ)
    ·ģ(Continued fraction circuit)Ӧ˴ڲİ뵼ʵڰֱnba߹ۿط-ڰֱnbaؿ֪ÿIJʱܹģȻڰֱnba߹ۿط-ڰֱnbaؿҪ ÿϵ·ͼʮ鷳ÿһ㣨оƬоƬӲڰֱnba߹ۿط-ڰֱnbaؿƬƬӲڰֱnba߹ۿط-ڰֱnbaؿװ壩ӦRCԪʾڰֱnba߹ۿط-ڰֱnbaؿ˴·ģ͵ĸڵܹÿϵڲ¶Դhttp://www.christian-fiction.com/sr/297.html
     ֲ·ģ
    ͼ 2: ֲ·ģ (Partial fraction circuit,ҲFosterģͻpiģ)
    ·ģͲͬڰֱnba߹ۿط-ڰֱnbaؿֲ·ģ(Partial fraction circuit)RCֲϲӦڵûκӦֲøģڰֱnba߹ۿط-ڰֱnbaؿΪϵ״Ѳõɢеõڰֱnba߹ۿط-ڰֱnbaؿڰֱnba߹ۿط-ڰֱnbaؿ˸ģڽ¶ȷֲ
    ڱӦֲкڰֱnba߹ۿط-ڰֱnbaؿֲ·ģеϵеrһʾڰֱnba߹ۿط-ڰֱnbaؿ
    һӣ
    ֲ·ģеϵ
    迹߷̼Tj㹫ʽ
    ˲̬迹
    ֲ·ģк빦P(t), Tcase IGBT ķģ
    ͼ 3: ֲ·ģк빦P(t), Tcase IGBT ķģ
    ʵӦڰֱnba߹ۿط-ڰֱnbaؿɢƬ¶Ȳܼ򻯼Ϊ㶨ֵΪɢƬʱ䳣ڵʱ䲻Ƕ̵ԺԵڷǹ̶ĹҪTcase(t )в߽IGBTģɢƬģ
    ǵȽ
    ·ģµ¶ʱõȽRt h δ֪ĵȽZt hȻھֲ·ģһԾĹ뵽IGBTʱͨȽ¶漴˽ʵвڵĽַԱ
    1) ɢƬZth ͨõڰֱnba߹ۿط-ڰֱnbaؿӦû¶TcaseɢƬ¶Thsڰֱnba߹ۿط-ڰֱnbaؿȽѾɢƬ¶Ȳڰֱnba߹ۿط-ڰֱnbaؿͲٵֿ
    2) IGBTѾ֪빦P(t)¶Tcase(t)ֱӲõڰֱnba߹ۿط-ڰֱnbaؿӶͼ3õ
    IGBTɢƬþֲ·ģͻ·ģ
    ûڰֱnba߹ۿط-ڰֱnbaؿĻĿǰеIGBTɢƬȲ·ģͼڰֱnba߹ۿط-ڰֱnbaؿ·ģͺ;ֲ·ģͶṩIGBTĽᵽɢƬΧȴݹڰֱnba߹ۿط-ڰֱnbaؿҪIGBTɢƬģͺϲһͻҪĸģ͵رIGBTɢƬǷֱ
    ·ģеIGBT ɢƬ
    ۺϵ·ģ
    ͼ 4: ۺϵ·ģ
    ·ģͺģӵĸϲģʹȴݹڰֱnba߹ۿط-ڰֱnbaؿϲ㴫—ڵ·еĵ—һʱӳٺ󵽴ﲢɢƬ·ģͿͨһľֲ·ģͱ任õ
    ͨṹÿһϷԪģڰֱnba߹ۿط-ڰֱnbaؿԿԽһģֻڰijһضɢƬʱǿܵĺڰֱnba߹ۿط-ڰֱnbaؿڰֱnba߹ۿط-ڰֱnbaؿΪɢƬIGBTĴ໥õӰڰֱnba߹ۿط-ڰֱnbaؿҲӦʱIGBTRthjcӰʵеɢƬõɢƬһôͲͨʵʵɢƬнģ
    ֲһֲ·ģ͵IJΪǻڲõĽԼṩZthjcΪƵڰֱnba߹ۿط-ڰֱnbaؿֲ·ģͱ任Ϊ·ģпܵ任һRth/CֵںܶԲͬRthCȡֵұ任µ·ģеRCֵͽڵ㶼ûȷһ任õIJ·ģͶӦ·ģͻִ
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