试验2单相半波可控整流电路

1、实验二单相半波可控整流电路建模仿真实训一、单相半波可控整流电路（电阻性负载）(1)理图单相半波可控整流电流（电阻性负载）原理图，晶闸管作为开关元件，变压器t器变换电压和隔 离的作用，用ul和u2分别表示一次和二次电压瞬时值，二次电压u2为50hz正弦波波形如图所示， 其有效值为u2,如图11。图1-1（2）建立仿真模型根据原理图用matalb软件画出正确的仿真电路图，如图12。元器件名称心提取元器件路径卩交流电源"SimulinkSimPoweSystemElectr 1 cal SourcesVAC Voltage Source晶闸管VTaSimulinkSimPoweSystem

2、Power Electronics' Thyristor脉冲发生器心SimulinkSimulinkSourcesPulse Generator负载RaSimulink.SimPoweSystemElements Series RLC Branch电压测量u、ud. uakSimulinkSimPoweSystemMeasurementsVbltage Measurement示波器Scope*3分路器心SimulinkSimulinkVSinal RoutingVDemuxpovergui图1-2仿真参数，a)、电源参数，频率5011Z,电压220*sqil(2),如图13图1-3b）

3、脉冲参数，振幅IV,周期0.02,占空比10%,时相延迟（1/50） x （11/360） s,如图1-4脉冲信号发生器Pulse Generator参数"Phase delay（secs） ”（相位延迟）的计算。相位延迟t在电 路里就是晶闸管的控制角a ,两者之间的关系是：t a an od 0.02a=、即 r =T 3609360°36 孑当a =0°时，（=0 （实际仿真模型中应使tHO,这里t=0.0001s）；当a =30°时，t=0.00167s；当a =45。时,t=0.0025s；当 a =60° 时,t=0.0033s；当

4、a =90°时，t=0.005s,以此类推。Source Block Parameters: Pulse GeneratorCI1L1Pulse type ermines the computational technique used.lime-based is recomn.en.ded for use with a variable step solver, vhile Sample-based is reconunended for use vith a fixedsolver or within a discrete portion of a m.od.e：using a

5、variable stwp solver.ParametersPulse type:Time (t): |Use simulation timeAmplitude:nPeriod (secs): |0. 02Pulse Width (% of period):Phase delay (secs):|0. 02*0.25V Interpret vector parameters as 1-DOKJ 1THelp I图1-4c）、晶闸管参数采用默认，如图153 Block Parameters: Detailed ThyristorDetailed Thyristor (mask) (ink)De

6、tailed model of Thyristor in parallel with a series RC snubber circuit.In on-state the Thyristor model has an internal resistance (Ron and inductanee (Lon).In off-state the Detailed Thyristor as an impedanceBest accuracy is achieved when Tq is larger than the simulation step size.Latching current an

7、d turn-off time are not modeled when Lon is set to zero.ParametersResistance Ron (Ohms):Inductance Lon (H):0Forward voltage Vf (V):心8Initial current Ic (A):£ 丨Snubber resistance Rs (Ohms):IPSnubber capacitance Cs (F):4.7&6F0 Show measurement port QK Cancei Help 加曲图1-5d)、在主菜单Simulation b Coi

8、ifiguiation Parameters设置模型图参数里；算法为 Ode23tb或 Odel5so 相对误差(lelativetolenmce) le-3,开始时间 0 结束时间 Stop time0.05s,如图 1-6。Configuration Paraaeters: untitled/Confimration (Active)Select:pSob'eii-Dala lmpoiUE>pcrl bOpfimcalizn Di 巧 rmhg:SampIcTre:： OdsVdid:r-TpceCjri/eisbri: p-Ccrneciiviiyj j-Compattii

9、ljji ； Modsl Refer encng hHardwa-e Impbmentalion ；Model ReferencingRed-T ine V/oksbap：r-ConmeriUj r-Spmtofc：j-Custom Ccriei p DebugI ;-lde(f&:eBHDLCcder:-Global Selfings: TcslBer>:h丫“ EDA Ted SciirtsStait lime EEStop time 0 03ouivci up.vr吸h伽 step tee- Mh$tep size:Infci step 忍Zeio crowrg centr

10、alVaii±h depv Solver:cd©45 iDoimandPrirce)7alaRejaiba takranrele-3dJbJbsclitetdeidice:ctitoaJioUse local teilrigtvGimUatizn firnc匚 4i/omabcal handle data tiansfer between taskSokei discrossi: contrdc QK j Rrrei jjelD 沁图1-6（3）模型仿真及仿真结果。u为整流电源正弦电压波形、ug为门极正脉冲、电压波形、1VT、l】VT为晶闸管两端电流、电压波形、II. UT

11、为整流输出电流；图1-11中的U为整流电源正弦电压波形、ug为门极正脉冲、ud为整流输出电压波形、1VT为流过晶闸管的电流、uVT为晶闸管两端电压波形。o©a(noo<0.(60(0oce001o旧ara0.03DMM21 03J1i 1 1 I i 1 1 I 1）Q0100?Q3OO*0.(6OW电阻负载30度S Sc«>e1毎囱 P-0P asq 0 a <?” ! / ! _"*0001Q02003QCM丘6(MXQO?oi»qHGJ- f!(:r1 !0001Q02003QMaix(UX00?Q(»6电阻负载60度Q

12、 Sccp.10自 QQQ e i/>：0电阻负载90度(3)仿真参数设置设置触发脉冲么分别为0°、30°、90°、120°、150° o与其产生的相应波形分别如图1-7、图1-8、图19、图1-10.图bllo在波形图中第一列波为脉冲波形，第二列波为流过负载电压波形, 第三列波为晶闸管电压波形，第四列波为负载电流波形，第五列波为电源波形。(4)小结二、单相半波可控整流电路(阻-感性负载)单相半波阻-感性负载整流电路图如2-1所示，当负载中感抗远远大于电阻时成为阻-感性负载， 属于阻-感性负载的有机的励磁线圈和负载串联电抗器等。阻-感性负载的等效电路可以用一个电感和 电阻的串联电路來表示。O图21(2)建立仿真模型如图根据原理图用matalb软件画出正确的仿真电路图，整体模型如图2-2o图2-2电感参数设置如2-3。图2-3仿真参数，算法(so