Kev txawj ntsuas qhov zoo ntawm lub zaus converter nrog ib tug multimeter
Nws yuav tsum tau muab sau tseg tias rau tus kheej kev nyab xeeb, lub tshuab yuav tsum tau muab tshem tawm, thiab lub inverter input fais fab kab R, S, T thiab tso zis kab U, V, W yuav tsum tau muab tshem tawm ua ntej ua hauj lwm! Ua ntej tig lub multimeter mus rau cov ntaub ntawv "secondary tube", thiab tom qab ntawd siv cov xim liab thiab xim dub coj ntawm multimeter los kuaj xyuas raws li cov kauj ruam hauv qab no:
Cov hlau lead kuaj dub kov tus ncej tsis zoo P (ntxiv rau) ntawm lub tsheb npav DC, qhov kev kuaj liab liab kov R, S, T tig, thiab sau cov nqi tso tawm ntawm lub multimeter. Tom qab ntawd kov qhov kev sim liab coj mus rau N (-), thiab qhov kev sim dub ua rau R, S, T tig, thiab sau cov nqi zaub ntawm multimeter. Yog hais tias lub rau cov zaub qhov tseem ceeb yog qhov sib npaug, nws txhais tau hais tias tsis muaj teeb meem nrog lub diode rectification lossis soft-start resistor ntawm lub inverter, txwv tsis pub lub rectifier module los yog soft-start resistor ntawm qhov chaw sib raug zoo. Phenomenon: tsis muaj zaub.
Cov hlau lead kuaj liab kov tus ncej tsis zoo P (ntxiv rau) ntawm lub tsheb npav DC, qhov kev sim dub lead kov U, V, W tig, thiab sau cov nqi tso tawm ntawm lub multimeter. Tom qab ntawd kov qhov kev sim dub coj mus rau N (-), thiab qhov kev sim liab ua rau U, V, W tig, thiab sau cov nqi zaub ntawm multimeter. Yog hais tias cov zaub rau qhov tseem ceeb yog qhov sib npaug, nws qhia tau tias tsis muaj teeb meem nrog IGBT inverter module ntawm zaus converter. Txwv tsis pub, IGBT inverter module ntawm qhov chaw sib raug yog puas. Phenomenon: tsis muaj qhov tso zis lossis qhov yuam kev raug tshaj tawm.
Siv lub tshuab hloov zaus los tsav lub tshuab asynchronous nrog lub zog sib xws kom khiav tsis muaj kev thauj khoom, kho qhov zaus f, thiab pib poob ntawm 50Hz mus rau qhov qis tshaj plaws.
Thaum lub sijhawm ua haujlwm no, siv lub ammeter los kuaj xyuas qhov tsis muaj kev thauj khoom tam sim no ntawm lub cev muaj zog. Yog tias qhov tsis muaj kev thauj khoom tam sim no ruaj khov thaum lub sijhawm ua haujlwm poob qis thiab tuaj yeem nyob twj ywm tsis hloov pauv, nws yog qhov zoo inverter.
Qhov tsawg kawg nkaus zaus tuaj yeem suav tau zoo li qhov no, (synchronous ceev - ntsuas nrawm) × tus naj npawb ntawm ncej khub p÷ 60. Piv txwv li, rau ib tug 4- ncej lub cev muaj zog, qhov ntsuas ceev yog 1470 revolutions, thiab qhov tsawg zaus=(1500-1470) × 2÷60=1Hz.
Kev ntxub ntxaug ntawm AC thiab DC solid state relays: Feem ntau, ib sab ntawm cov tswv yim thiab cov zis tawm ntawm DC cov khoom hauv lub xeev relay casing, muaj cov cim "ntxiv" thiab "-" cov cim, thiab cov lus "Dc input" thiab "DC output" yog. cim. Lub AC lub xeev relay tsuas tuaj yeem raug cim nrog "ntxiv" thiab "-" cov cim ntawm qhov kev nkag siab kawg, thiab cov zis kawg tsis muaj cov ntsiab lus zoo thiab tsis zoo.
Kev ntxub ntxaug ntawm input thiab output terminals: unmarked solid-state relays, multimeter R × 10k cov ntaub ntawv, los ntawm kev ntsuas tus nqi pem hauv ntej thiab thim rov qab ntawm txhua tus pin los txiav txim siab cov tswv yim thiab cov khoom tawm. Thaum qhov kev tawm tsam rau pem hauv ntej ntawm ib qho ob tus pins me me thiab qhov rov qab ua haujlwm tsis muaj qhov kawg, ob tus pins no yog cov khoom siv nkag, thiab ob tus pins yog cov zis tawm. Nyob rau hauv ib qho kev ntsuas nrog tus nqi me me tsis kam, cov hlau lead kuaj dub txuas nrog rau qhov zoo ntawm lub davhlau ya nyob twg, thiab cov hlau kuaj liab txuas nrog lub qhov hluav taws xob tsis zoo.
Yog hais tias qhov ntsuas rau pem hauv ntej thiab thim rov qab tsis kam ntawm ib qho ob tus pins yog ob qho tib si 0, nws txhais tau hais tias cov khoom hauv lub xeev relay tau tawg thiab puas lawm. Yog hais tias qhov ntsuas rau pem hauv ntej thiab thim rov qab qhov tseem ceeb ntawm txhua tus pin ntawm cov khoom hauv lub xeev relay yog infinite, nws txhais tau hais tias cov khoom hauv lub xeev relay tau raug puas tsuaj los ntawm qhov qhib Circuit Court.
