资源描述
返 回 mn nD 1 2 3 4 5 6 A B C D 654321 D C B A Title Number RevisionSizeBDate: 14-Dec-2005 Sheet of File: C:Program FilesDesign Explorer 99 SEExamplesdi5.ddbDrawn By: T1T2 ZZVS VS S Vo+- +Voa 理想开关 b 晶闸管开关图7-1 通断控制 图7-2 单相通断控制输出波形 2 2 ( )in OV Z nT V Z n m T 22OinV nV n m ovv sV nT DV m n t t 4 2 2 sin21 sin 4orms s sV V d V 2 sin24ovv sVT V 7-4电压传输比与延迟角关系 t sino o sdiL Ri V tdt ( )sin sin R ts Lo Vi t eZ RLLRZ tan,22 50Hz 4 0.001L H 2R 7-5 延迟角控制的输出电压、电流图(负载) 2 sino sdiL V tdt ( ) sin( )cos coss sVi t d tLVL 0i t 2 2 图7-6 电感负载时输出电压和电流（ ） 2 2 21 sinorms sV V t d t 2( ) sin2ormsvv sVT V 4 2 2 (2 ) (2 ) ( ) 3 ( ) (3 ) 5 8 图7-7 电感负载时输出电压和电流（ ）5 8 sinsin( 2 3)sin( 4 3)AN pBN pCN pv V tv V tv V t 3 sin( 6)3 sin( 2)3 sin( 7 6)AB PBC PCA Pv V tv V tv V t 1 2 3 4 5 6 A B C D 654321 D C B A Title Number RevisionSizeBDate: 23-Dec-2005 Sheet of File: E:MyDesign-li5.Ddb Drawn By: T1 T4T3 T6T5 T2 R R R A B C a b c图7-8 负载为Y连接的三相交流控制器 图7-9 三相相电压和线电压波形 ANv BNv CNv ANv BNv CNv 2 3 4 3 5 3 7 3 2 3 3 0AKv T1T2 T2T3 T3T4T4T5T5T6 T6T1 换 相T6 T2 换 相T1 T3 换 相T2 T4换 相T3 T5换 相T4 T6换 相T5 T1图7-10 导通顺序和换向图 1 6T Load T 1212 30aN ABbN ABcNv vv vv 3 1 2T Load T 12 20 3 312aN ACbNcN ACv vvv v 01 22 312aNbN BCcN BCvv vv v 121 42 30aN BAbN BAcNv vv vv 12 4 50 3 312aN CA bNcN CAv vvv v 0 1 5 22 312aNbN CBcN CBvv vv v ANv 1 321 32 ABAN ACvv v 3 8 图7-11 三相输出电压波形 1 2 3 4 5 6 A B C D 654321 D C B A Title Number RevisionSize BDate: 6-Jan-2006 Sheet of File: E:MyDesign.ddb Drawn By: Zvi s vo S1GTR S2GTR S1GTR S2GTR D1DIODE D2DIODE a b 图7-12 PWM控制图7-13 PWM控制室的输出波形 2 12 in dn 2 12 i dn 2 12 i dn 1,2,3i n a b c图7-14 电力半导体开关构成双向开关设输入电压为 ，输出电压基波有效值由下式计算：对图7-13进行谐波分析可以发现，最低次谐波较电源输入频率高出很多（倍），因此虑除较为容易。sinpV t (2 1 ) 2 22 (2 1 )1 21 sin ( ) ( )n i dn pi di nvo V t d t 1 2 3 4 5 6 A B C D 654321 D C B A Title Number RevisionSizeBDate: 8-Jan-2006 Sheet of File: E:? ? ? ? ? MyDesign.ddb Drawn By: S1GTR S2GTR S1GTR S2GTR D1DIODE D2DIODE a b D2DIODE D4DIODED3DIODE D1DIODE D?GTR c 返 回 2 1 300OT s 2 3 4 1 2 3 4 5 6 A B C D654321D C B A Title Number RevisionSizeBDate: 6-Mar-2008 Sheet of File: E:? ? dmld? MyDesign.ddb Drawn By: T1T4 T2T3T1T4 T2T3 L Vo图7-15 单相-单相四象限周波变换器 图7-16单相-单相四象限周波变换器输出电压（ ）6 1 2 3 4 5 6 A B C D 654321 D C B A Title Number RevisionSize BDate: 7-Jan-2006 Sheet of File: E:? ? ? ? ? MyDesign-li5.Ddb Drawn By: AB b z z zL L L O T1T3T5 *1+ a -*4T2T6T4 T1T3T5 *3+ -*6T2T6T4 T1T3T5 *5+ -*2T2T6T4 C c图7-17 三相-三相半波周波变换器 2 3 2 33*6*1 *1*2 *2*3 *3*4 *4*5 *5*6 *6*1 t *1 *2 *3 *4 *5 *6*6 T0T0/6 2T0/6 3T0/6 4T0/6 5T0/6 T1 T3 T5 T1 T3 T6 T2 T4 T6 T2 T4 T6 T2T5 T1 T3 T5 T1T4 T6 T2 T4 T6T 3 T5 T1 T3 T5T2 T4 T6图7-18三相-三相半波周波变换器换流次序 1 1 1 1 1 1 1 1 1 1 , , , , , , , , , ,2 2 2 2 2 2 2 2 2 21 1 1 1 10,0,0,0,0, , , , , ,2 2 2 2 21 1 1 1 1, , , , ,0,0,0,0,02 2 2 2 21 1 1 1 1 , , , , ,0,0,02 2 2 2 2ao AB AC BC BA CA CB AB AC BC BABA CA CB AB ACBC BA CA CB ABbo AB AC BC BA CAv v v v v v v v v v vv v v v vv v v v vv v v v v v ,0,0,1 1 1 1 1 1 1 1 1 1, , , , , , , , , ,2 2 2 2 2 2 2 2 2 21 1 1 1 10,0,0,0,0, , , , , 2 2 2 2 21 1 1 1 10,0,0,0,0, , , , , ,2 2 2 2 21 1 1 1 1, , , , ,0,0,02 2 2 2 2CA CB AB AC BC BA CA CB AB AC AC BC BA CA CBco CB AB AC BC BACA CB AB AC BCv v v v v v v v v vv v v v vv v v v v vv v v v v ,0,0,1 1 1 1 1 1 1 1 1 1, , , , , , , , , 2 2 2 2 2 2 2 2 2 2BC BA CA CB AB AC BC BA CA CBv v v v v v v v v v 1 2 3 4 5 6 A B C D 654321 D C B A Title Number RevisionSizeB Date: 8-Jan-2006 Sheet of File: E:? ? ? ? ? MyDesign-li5.Ddb Drawn By: T5T3T1 *1 *4 T2T6T4 T1 T3 T5 T2 T6 T4 LT5T3T1 *3 *6 T2T6T4 T1 T3 T5 T2 T6 T4 LT5T3T1 *5 *2 T2T6T4 T1 T3 T5 T2 T6 T4 L a c b AB C AB C AB C A BC A BC A BC 图7-19 全桥三相-三相周波变换器电路图 返 回
展开阅读全文