《电力电子电机控制系统仿真技术》洪乃刚第5章

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1、 晶闸管-直流电动机系统是直流调速最基本的组成，它主要由整流变压器、晶闸管整流器、平波电抗器L和直流电动机组成 30KW 220V 136A 1460rpm DC-MOTOR ud2ud110uctv+-uca1ucav+-ubc1ubcv+-uab2uabv+-uAB1uABv+-u2v+-u1tspeedifidiaiAv+-ca0blockv+-bcv+-abABCabcTransformerABCThree-Phase SourceABCabcThree-PhaseTransformer1TeStepLd30/piGain90-6*u1FcnEDemuxTLmA+F+A-F-dcDC

2、Machinei+-i+-Clockalpha_degABBCCABlockpulses6-Pulse pulsesABCK A VT-bridge 在调速系统中直流电动机一般采用它励方式，为了简化模型励磁由直流电源模块E供电。同步变压器、触发器、移相控制Fen和给定模块Uc组成驱动控制电路，触发器6pulse generator的同步电压信号连接如图 CCUUmaxmin9090 负载转矩输入端TL用 step模块设定加载时间和加载转矩 三相变压器采取/Y型连接，原边电压为380V（线电压），副边相电压为 VIRRUUnomarecnom126cos34. 2)(min2hIpnCULnom

3、nomnoma00021. 01361460222204 . 01 .1921 .19(3) 电枢绕组和励磁绕组间互感Laf ：HIKLCKrVnIRUCfEafeEnomnomanome84. 05 . 1/26. 1/26. 1132. 0260260min/.132. 0146013621. 022000.511.50500100015002000t / sn / rpm00.511.5050100150200250300t / sud2 / VVUct1030（电机在时空载起动，稳态转速为1440转/分 加载稳定后电压为218V 00.511.5-1000100200300400500

4、t / sid / A020040060005001000150020002500Te / N.mn / rpmAB11.0051.011.0151.02-400-2000200400t / sud Ud / V, id / AUdudid11.0051.011.0151.02-400-2000200400t / sud Ud / V, id / AUdudid45757511.011.021.031.04-600-400-2000200400600t / suAB / V , iA / AuABiA11.011.021.031.04-400-2000200400t / suab / V ,i

5、a / Auabia00.511.50500100015002000t / =sn / rpmUc=7.5VUc=5VUc=2.5VUc=10V00.511.50100200300400500t / sid / AUc=7.5VUc=5VUc=2.5VUc=10V30KW 220V 136A 1460rpm DC-MOTOR -unuctKp10un*ud2ud1uctv+-u2v+-u1tspeedalphan-feedifidv+-ca0blockv+-bcv+-abABCThree-Phase SourceABCabcThree-PhaseTransformer(Two Windings

6、)1ABCabcThree-PhaseTransformer(Two Windings)TeStepSaturationLdKpGain130/piGain90-6*u1FcnDemuxTLmA+F+A-F-dcDC MachineClockalpha_degABBCCABlockpulses6-Pulse 220VpulsesABCK A VT-bridge00.511.50500100015002000t / sn / rpmUn*=10Un*=5Un*=0.500.511.50100200300400500t / sid / AUn*=10Un*=5Un*=0.520731460D00.

7、511.50500100015002000t / sn /rpmKp=20Kp=5Kp=0.5Kp=10000.511.5-10-5051015t / sUct / VKp=20Kp=5Kp=0.5Kp=10030KW 220V 136A 1460rpm DC-MOTOR -unUcUngUngun*ud2ud1uctv+-u2v+-u1tspeedalphan-feed1ifidv+-ca0blockv+-bcalphav+-abABCThree-Phase SourceABCabcThree-PhaseTransformer(Two Windings)1ABCabcThree-PhaseT

8、ransformer(Two Windings)TeStep0.5s 171.4N.mLd30/piGain90-6*u1FcnEDemuxTLmA+F+A-F-dcDC MachineClockPI controllerASRalpha_degABBCCABlockpulses6-Pulse pulsesABCK A VT-bridge00.511.5050010001500t / sn / rpmPI 调 节 器P 调 节 器1460rpm00.511.5-1000100200300400500t / sid / API 调 节 器P 调 节 器30KW 220V 136A 1460rpm

9、 DC-MOTOR -unuctKp(Ung-Un)Ung-uif10un*ud2ud1v+-u2v+-u1tspeedalphan-feedifidfidbatai-feed1v+-ca0blockv+-bcv+-abABCThree-Phase SourceABCabcThree-PhaseTransformer(Two Windings)1ABCabcThree-PhaseTransformer(Two Windings)TeStepSaturationLdKpGain130/piGain90-6*u1FcnEDemuxDead Zone0 10.4TLmA+F+A-F-dcDC Mac