單相半波二極體整流器

1、992電力電子學(xué)實(shí)習(xí)作業(yè)班級(jí)：二技電機(jī)3B學(xué)號(hào):U990J206姓名:吳立玄1. 單相全波二極體橋式整流器電路：如下圖。輸入電源為 Vp=170V、60Hz之正弦波。 二極體使用1N5404濾波電容Co=2200嚇(初始值設(shè)定為165V),電阻性負(fù)載RL=100Q, 圖，模擬並顯示輸入電壓 Vin與輸出電壓Vout波形；(穩(wěn)態(tài)34週期)(2) 圖(2),模擬並顯示輸入電壓 Vin與輸入電流Is波形，(穩(wěn)態(tài)34週期)(3) 圖,顯示Is之模擬圖和頻譜(頻譜：offset=300Hz, scale=60Hz)(4) 模擬並顯示傅立葉級(jí)數(shù)分析表，由傅立葉級(jí)數(shù)分析表的結(jié)果可知，(a) THD= 183

2、.946% ,(b) 求功率因數(shù)=0.47(5) 實(shí)習(xí)心得：?jiǎn)蜗嗳ǘO體整流器增加濾波電容電路單相全波二極體橋式整流器電路使用純電阻性負(fù)載與增加濾 波電容，輸入電源為 Vp=170V 60HZ之正弦波。橋式整流器 為電源整流用的二極體DN5404,額定為400V/3A。濾波電容C1=2200uf，電阻性負(fù)載 RL=100。、相關(guān)原理與公式1. V。三 Vm略 Wm2. 乂 三乂-2FRC3. C越大則V。越小4. C越大則 V。越穩(wěn)壓5. C越大則Is突波越大，功因越差三、波形執(zhí)行模擬，慮波電容增加到Co=2200uF,設(shè)定電容的初始值為IC=165V。輸出電壓及輸入電壓與輸入電流的波形如下

3、(3.1). Vin 和 Vout執(zhí)行模擬輸出及輸入電壓.VIN * VOUTbetween-OV 卩 Tuov Nvand125m seconds200y (mean) =165 voltsx (first) = 100.8m secondsy (max) =170 voltsx =87.5m secondsbetween 75.0m and 125m seconds袁方龍、吳立玄y (pk-pk) = 5.63 volts between 75.0m and 125m seconds75.0m00O80.0m90.0m110m120mRMS = 120 voltsbetween 75.0m

4、 and 125m seconds100mTIME in seconds1. 輸入電壓 Vin CH1 : 50V/div, Vset=0V,5M/div2. 輸出電壓 Vout CH2： 50V/div,Vset=0V(3.1).% 和 Is執(zhí)行模擬輸入電壓與輸入電流，設(shè)慮波電容為 Co=2200uF.vin袁方龍、吳立玄y (max) =36.1 amperesx =104m sec onds20040.0betwee n 75.0m and 125m sec ondsy (mea n) =-1.04m amperesx (first) =78.4m sec ondsbetwee n 75

5、.0m and 125m sec onds100 20080.0m90.0m100mtime in seco nds110m120moRrrov n 卩 Vo002-c/s-op Bu 卩 F0011. 輸入電壓 Vin CH1 : 50V/div, Vset=0V,5M/div2. 輸入電流 Is CH2: 10A/div,lset=0Aser-eprna-jpmF-(r (pcmfselepma 卩p1 -Dlis*2mag(fft(temp)20.0m60.0m100mtime in sec onds140m180m袁方龍、吳立玄EJ1iiTjIJL.1004000020060.0180

6、300freque ncy in hertz420540(3.3).Is傅立葉分析Fourier an alysis for lsi:No. Harmo nics: 10, THD: 183.946 %, Gridsize: 200, I nterpolation Degree: 1Harm onic Freque ncyMagn itudePhaseNorm. MagNorm. Phase00-0.00421730001603.294488.259111021200.00834835109.8320.00253404101.57331803.23794-155.180.982838-163.

7、4442400.0081089-49.750.00246136-58.00953003.1273841.50240.94927933.243363600.00777304151.8260.00235941143.56774202.96775-121.590.900825-129.8584800.00743519-4.98080.00225686-13.2495402.7661875.63650.83964267.3773(3.4).功率因數(shù)PFPF 二1*COS 1 二1COS(8.259°) ： 0.47J 仃HD )2,J (183.946%)2(3.5).量測(cè)與記錄80.0m9

8、0.0m100mtime in sec onds110m120mvinvout吳立玄 袁方龍200100-100-200002O0OOO1 /- O 卩 nlvdwLOLHspepma p p00-2y (pk-pk) = 5.65 voltsbetwee n 75.0m and 125m sec ondsy (mea n) =165 voltsx (first) =78.8m sec ondsbetween 75.0m and 125m secondsy (max) =170 voltsx =121m sec ondsbetween 75.0m and 125m secondsRMS = 1

9、20 voltsbetween 75.0m and 125m seconds吳立玄袁方龍40.020.0-20.0-40.080.0m90.0m110m120my (max) =36.5 amperesx =87.0m seco ndsbetween 75.0m and 125m secondsy (mea n)二1.50m amperesx (first) =86.8m sec ondsbetween 75.0m and 125m seconds% ,maxVin ,rmsVout ,pk-pkVout ,avgI s ,maxls,avg170V120V5.65V165V36.1V1.04mv100mtime in sec onds四、實(shí)習(xí)心得1. 加裝濾波電容會(huì)以實(shí)際場(chǎng)合與電路特性需求和本錢考量選擇大小，一般會(huì)允許固定的範(fàn)圍值，因而輸出端可得到穩(wěn)定的輸出電壓，但是卻造成了輸入端功率因數(shù)隨著 輸出濾波電容增加而減少。2. 由圖一與圖二波形分析，證明CC=2200uF與C=470uF比較越大，Is突波越明顯VmlVo- C=470uF Is max=20.8fRCC=2200uF Is max=34.93. 由圖三與圖四波形分析，證明RR=1000與R=100比較越大，Vo越穩(wěn)壓VmVo m R=1000 Vout=605mV fRCR=100 Vout=