Inverter switching fais fab mov kho txoj kev
1. Ob peb kauj ruam ntawm kev hloov fais fab mov yog raws li hauv qab no:
1. Xyuas seb lub rectifier Circuit Court D1-D4 puas puas lawm los yog seb lub capacitance ntawm lub Circuit Court breaker lim Circuit Court puas puas, seb qhov sib npaug resistors R1 thiab R2 puas zoo li qub, seb lub kauj ruam-down resistor R3 puas tawm. los yog tus nqi kuj nce thiab ua tsis tau (kuaj thaum fais fab tuag).
2. Tshawb xyuas seb qhov sib txuas thiab qhov sib txuas ntawm lub raj hloov pauv puas muaj qhov tshwm sim luv luv Circuit Court, thiab ntsuas seb puas muaj qhov tshwm sim luv luv hauv txhua qhov winding ntawm lub tshuab hloov pauv los txiav txim siab seb lub raj hloov pauv thiab cov hloov pauv hloov pauv puas zoo lossis phem (kuaj thaum lub hwj chim tawm).
3. Tshawb xyuas cov kev hloov kho thiab lim cov khoom ntawm cov khoom tso tawm thib ob winding, thiab tsom mus rau kev kuaj xyuas seb lub lim capacitor puas o lossis puas, thiaj li txiav txim siab qhov muaj peev xwm ntawm qhov luv luv hauv Circuit Court thib ob.
4. Xyuas seb qhov nqus hluav taws xob D5, R11, thiab C9 puas zoo li qub (kuaj thaum lub hwj chim tawm).
5. Nyob rau hauv cov ntaub ntawv ntawm kev lees paub tias cov khoom saum toj no yog qhov qub, peb tuaj yeem tshem tawm cov hloov hluav taws xob hloov hluav taws xob los ntawm inverter thiab ua qhov ntsuas hluav taws xob ntawm nws cais. Siv lub ntsuas hluav taws xob kom maj mam kho kom haum rau qhov ntsuas hluav taws xob ntawm lub zog hloov hluav taws xob. Lub sijhawm no, koj yuav tsum hnov squeaking suab ntawm lub transformer thaum nws pib vibrate. Yog tias koj tsis hnov lub suab pib qhov kev vibration, siv lub multimeter los kuaj xyuas qhov zoo thiab qhov tsis zoo ntawm UC3844 fais fab mov. Seb puas muaj DC voltage txog 12V-16V nruab nrab ntawm lawv.
6. Tom qab paub meej tias qhov hluav taws xob ntawm lub zog hluav taws xob lub davhlau ya nyob twg ntawm UC3844 yog qhov qub, koj tuaj yeem siv lub oscilloscope los xyuas seb puas muaj PWM nthwv dej tso tawm mus rau lub ntsiab lus ntawm qhov hloov raj ntawm tus pin 6 ntawm UC3844 (raws li kev tsim hluav taws xob sib txawv. , qhov zaus ntawm PWM yoj yog feem ntau ntawm 20KHZ-100KHZ).
7. Yog tias tsis muaj PWM nthwv dej tawm, hloov cov khoom siv sijhawm C5, R8, C6 lossis UC3844. Tom qab tshem tawm cov kauj ruam saum toj no, cov khoom siv hluav taws xob hloov pauv yuav tsum tuaj yeem ua haujlwm ib txwm. Nyob rau hauv lub zaus converter, muaj ntau hom kev hloov khoom siv hluav taws xob, tab sis cov ntsiab lus tseem ceeb yog tib yam. Piv txwv li, txhua PWM tswj nti muaj lub hwj huam mov davhlau ya nyob twg, lub sij hawm tivthaiv RC network, thiab qhov chaw nres nkoj rau outputting PWM nthwv dej. Tsuav peb nkag siab txog lawv txoj haujlwm Raws li lub hauv paus ntsiab lus, raws li qee txoj hauv kev thiab cov kauj ruam, qhov txhaum tuaj yeem raug tshem tawm.
2. Cov teeb meem tshwm sim hauv kev saib xyuas thiab kev daws teeb meem tiag tiag:
1. Delta inverter (kev txhaum tshwm sim: tsis muaj zaub thaum lub hwj chim rau)
Tom qab kev sim, nws tau pom tias lub ntsiab Circuit Court ntawm lub hwj chim mov, lub charger resistor, thiab lub contactor ntawm lub ntsiab Circuit Court yog txhua yam, yog li nws tau txiav txim siab hais tias lub switching fais fab mov board yog faulty. Ua raws li cov kauj ruam kho saum toj no txhawm rau ntsuas lub hwj chim hloov hluav taws xob. Thaum lub sij hawm thawj kauj ruam ntawm kev ntsuas, nws tau pom tias 330KΩ / 2W kauj ruam-down resistor ntawm DC tsheb npav 560V thiab PWM modulation nti puas lawm. Qhov nominal tsis kam ntawm 330KΩ / 2W tau ntsuas ntau dua 2MΩ. Yog li, PWM modulation nti yuav tsum raug puas tsuaj. Txhawm rau pib lub hwj chim, yog li tsis tuaj yeem pib ua haujlwm. Rau kev ceev faj, cov khoom tseem ceeb xws li hloov cov raj, transformers, rectifier diodes, thiab lim capacitors raug kuaj. Tom qab lees paub tias tsis muaj teeb meem, kev sim hluav taws xob, OK! Cov khoom siv hluav taws xob hloov pauv pib oscillate, thiab cov zis voltages ntawm txhua pab pawg yog qhov qub. Tom qab lub inverter tau teeb tsa rov qab, qhov kev sim pib yog qhov qub, thiab lub inverter tau kho lawm (Ceeb toom: cov neeg ua haujlwm tu yuav tsum ua tus cwj pwm thaum lub sijhawm tu: tsis txhob maj hloov lub tshuab kuaj tom qab pom cov khoom tsis zoo, Nco ntsoov kuaj. tag nrho cov high-power thiab yooj yim puas Cheebtsam, thiab sim lub tshuab tom qab paub meej tias tsis muaj teeb meem, uas yog ob qho tib si zoo thiab ruaj ntseg).
2. Taian inverter (qhov tshwm sim txhaum: tsis muaj zaub thaum lub hwj chim rau)
Tom qab kev sim, nws tau pom tias lub ntsiab Circuit Court ntawm lub hwj huam mov, lub charger resistor, thiab lub contactor ntawm lub ntsiab Circuit Court yog txhua yam, thiab qhov txhaum tau txiav txim siab nyob rau hauv lub hwj chim board. Ua raws li cov txheej txheem kho kom ntsuas qhov hloov hluav taws xob hloov hluav taws xob.
Thawj kauj ruam ntawm kev ntsuas dhau. Thaum lub sij hawm thib ob ntawm kev ntsuas, nws tau pom tias qhov kev sib tshuam ntawm lub raj hloov tau tawg. Nws raug tshem tawm, thiab tom qab ntawd cov transformer, rectifier diode, lim capacitor thiab lwm yam tseem ceeb tau sim. Qhov hluav taws xob yog qhov qub, qhov kev ntsuas kev teeb tsa yog qhov qub, thiab qhov ua txhaum raug tshem tawm.
3. Siemens inverter (qhov tshwm sim txhaum cai: tsis muaj zaub thaum fais fab tuag)
Tom qab kev sim, nws tau pom tias lub ntsiab Circuit Court ntawm lub hwj huam mov, lub charger resistor, thiab lub contactor ntawm lub ntsiab Circuit Court yog txhua yam, thiab qhov txhaum tau txiav txim siab nyob rau hauv lub hwj chim board. Ua raws li cov txheej txheem kho kom ntsuas qhov hloov hluav taws xob hloov hluav taws xob.
Thawj kauj ruam ntawm kev ntsuas dhau, theem thib ob ntawm kev ntsuas dhau, theem thib peb ntawm kev ntsuas dhau, qhov thib plaub ntawm kev ntsuas dhau, thiab tom qab ntawd lub hwj chim ntawm lub hwj chim board ib leeg los ntsuas qhov voltage ntawm 12.5V los ntawm lub hwj huam mov kawg. PWM modulation nti rau hauv av, qhia tias lub hwj chim mov yog qhov qub. Saib ntawm PWM tso zis davhlau ya nyob twg ntawm lub nti nrog lub oscilloscope, thiab pom tias tsis muaj PWM modulation waveform. Tom qab hloov PWM modulation nti, lub hwj chim-on test yog qhov qub, thiab qhov txhaum raug tshem tawm.
4. Schneider inverter (kev txhaum tshwm sim: tsis muaj zaub thaum lub hwj chim rau)
Nws tau pom tias lub hauv paus ntsiab lus ntawm lub hwj huam mov, lub charger resistor, thiab lub contactor ntawm lub ntsiab Circuit Court yog tag nrho ib txwm zoo tom qab kuaj lub rov qab mus hlawv lub raj, thiab qhov txhaum tau txiav txim siab nyob rau hauv lub hwj chim board. Ua raws li cov txheej txheem kho kom ntsuas qhov hloov hluav taws xob hloov hluav taws xob.
Thawj kauj ruam ntawm kev ntsuas tau dhau mus, theem thib ob ntawm kev ntsuas pom tau tias qhov hloov lub raj tawg, qhov thib peb kauj ruam ntawm kev ntsuas dhau, qhov thib peb theem ntawm kev ntsuas dhau mus, hloov lub raj hloov tshiab, thiab muab lub zog ntawm lub hwj huam sib cais, lub raj tau hlawv. dua. Tshem lub raj hloov pauv yam tsis tau txhim kho lub raj, ua qhov ntsuas hluav taws xob, thiab ntsuas tias lub hwj chim davhlau ya nyob twg ntawm PWM modulation nti muaj qhov hluav taws xob txog 12V rau hauv av, uas kuj yog ib txwm muaj. Siv lub oscilloscope los saib PWM cov zis ntawm nti, thiab pom tias PWM nthwv dej tsuas yog hais txog 5-6 KHZ. Tom qab lub hwj chim kaw lawm, lub sij hawm tiv thaiv raug tshem tawm thiab ntsuas. Nws pom tias qhov kev tiv thaiv ntawm lub sij hawm resistor yuav loj dua. Hlawv lub hwj chim raj, kev daws teeb meem.
5: Lenz inverter (qhov tshwm sim txhaum: tsis muaj zaub thaum lub hwj chim rau)
Rov qab hlawv cov hlab hloov pauv yog ntsuas ntawm lub hwj huam hloov hluav taws xob raws li kev saib xyuas cov kauj ruam.
Thawj kauj ruam ntawm kev ntsuas tau dhau mus, theem thib ob ntawm kev ntsuas pom tau hais tias qhov hloov pauv lub raj ce junction tawg, qhov thib peb, plaub, thib tsib, thib rau, thiab xya theem tag nrho dhau qhov kev ntsuas. Nruab ib lub raj hloov tshiab thiab lub zog ntawm qhov kev sim. Raws li qhov hluav taws xob ntawm qhov hluav taws xob tswj hluav taws xob nce, koj tuaj yeem hnov squeaking suab ntawm kev co, tab sis nws yog me ntsis nrov. Tom qab qhov hluav taws xob tau hloov kho mus rau qhov ntsuas hluav taws xob, qhov ntsuas qhov ntsuas hluav taws xob qis dua li tus nqi ib txwm muaj. Tom qab 2 feeb, kuv mam li hnov tsw ntxhiab tsw, thiab lub fuse tawg. Kuv ceev nrooj kaw lub hwj chim thiab pom tias lub raj hloov pauv kub heev, thiab qhov ntsuas pom tias nws tau tawg lawm. Tshem lub raj hloov thiab ua qhov ntsuas hluav taws xob. Ntsuas qhov voltage ntawm lub hwj chim davhlau ya nyob twg ntawm PWM modulation nti rau hauv av ntawm li 12V. Siv lub oscilloscope los saib PWM tso zis davhlau ya nyob twg ntawm lub nti. Nws tau pom tias muaj PWM nthwv dej tso tawm thiab qhov zaus yog li 30 KHZ, uas yog qhov qub. Yog li ntawd, kuv xav tias qhov zoo ntawm lub raj hloov pauv hloov pauv tsis zoo, yog li kuv hloov nws nrog lwm tus, thiab tom qab lub hwj chim ntawm qhov kev sim, lub raj raug hlawv dua. Tom qab lub hwj chim tau muab tua, kuv yuam kev kov cov khoom ntawm lub nqus hluav taws xob thiab pom nws kub, tab sis nws yog qhov qub thaum ntsuas. Ah, yog li kuv tau sim dua, thiab nws tseem zoo li qub. Tsuas yog dismantle lub nqus hluav taws xob ua ntej, thiab hloov nws nrog lub raj rau kev ntsuas hluav taws xob. Nws pom tias lub suab squeaking ntawm lub transformer yog me me, thiab cov zis voltage ntawm txhua pab pawg neeg kuj zoo li qub. Tom qab khiav rau 20 feeb, lub raj hloov pauv tsis hlawv dua. Tom qab lub hwj chim tau muab tua, lub raj hloov pauv tau kub me ntsis thaum kov, uas yog lub xeev cua sov. Yog li ntawd, nws tau txiav txim tias qhov txhaum yog nyob rau hauv lub nqus Circuit Court. Hloov cov khoom ntawm qhov nqus Circuit Court, thiab qhov txhaum raug tshem tawm.
