Domin cimma nasarar aiki mai canzawa na injin, ana amfani da fasahar inverter sosai a cikin injin da ba ya fashewa. A matsayin na'ura, inverter na iya canza wutar lantarki ta mitar wutar lantarki (50Hz ko 60Hz) zuwa nau'ikan wutar lantarki na AC iri-iri, don cimma aikin saurin canzawa na injin. Na'urar ta haɗa da da'irar sarrafawa don sarrafa babban da'irar; da'irar rectifier don canza wutar lantarki mai canzawa zuwa wutar lantarki kai tsaye; da'irar tsakiya ta DC ana amfani da ita don santsi da tace fitowar da'irar rectifier; da'irar inverter, wacce ake amfani da ita don canza wutar lantarki kai tsaye zuwa wutar lantarki mai canzawa. A cikin wasu masu canza mita waɗanda ke buƙatar yin ayyuka da yawa, yana da mahimmanci a sanya wa CPU don lissafin karfin juyi da da'irar da ta dace. Ta hanyar canza mitar samar da wutar lantarki na naɗewar stator na injin, ƙa'idar saurin mita mai canzawa na iya cimma manufar ƙa'idar saurin gudu.
Inverter Dangane da hanyoyin rarrabuwa daban-daban, ana iya raba su zuwa inverter na nau'in ƙarfin lantarki da inverter na yanzu, inverter na sarrafa PAM, inverter na sarrafa PWM da inverter na sarrafa PWM mai ɗaukar hoto mai yawa, inverter na sarrafa V/f, inverter na sarrafa mitar zamewa da inverter na sarrafa vector, inverter na gabaɗaya, inverter na musamman mai aiki, inverter na mita mai yawa, inverter na mataki ɗaya da inverter na mataki uku, da sauransu.
A cikin na'urar canza mita, VVVF tana nufin canza ƙarfin lantarki da mita, yayin da CVCF tana nufin ƙarfin lantarki mai ɗorewa da mita mai ɗorewa. A cikin wutar lantarki ta AC da ake amfani da ita a ƙasashe a faɗin duniya, ko a gidaje ko masana'antu, ƙarfin lantarki da mita yawanci 400V/50Hz ko 200V/60Hz (50Hz). Na'urar da ke canza irin wannan wutar lantarki zuwa wutar lantarki mai ɗorewa ko mita mai ɗorewa ana kiranta da "mai canza mita". Domin samar da ƙarfin lantarki mai ɗorewa da mita mai ɗorewa, na'urar tana buƙatar canza wutar lantarki mai ɗorewa zuwa wutar lantarki kai tsaye (DC).
Ana amfani da na'urar canza mita don sarrafa motar kuma tana iya canza ƙarfin lantarki da mita. Dangane da saurin motar AC, saurin n yana daidai da mita f, kuma ana iya daidaita saurin motar muddin an canza mita f. Saboda haka, na'urar canza mita tana gano ƙa'idar saurin ta hanyar canza mitar samar da wutar lantarki ta motar, wanda shine babban inganci da ingantaccen aiki na hanya mai sauri.
A cikin haɓaka masu sauya mita, hanyoyi daban-daban na sarrafawa sun haɓaka, gami da:
Yanayin sarrafawa na daidaitawar faɗin bugun jini na sinusoidal (SPWM), inda 1U/f=C;
Yanayin sarrafa na'urar vector na sararin samaniya (SVPWM);
Yanayin sarrafa vector (VC);
Yanayin sarrafa karfin juyi kai tsaye (DTC);
Mahadar Matrix - yanayin sarrafa mahadar, da sauransu.
A sama, an bayyana amfani da inverter mai ƙirƙira a cikin injin da ba ya fashewa. Ta hanyar fasahar inverter, ana iya daidaita saurin injin cikin sassauƙa, wanda ke kawo ingantaccen aiki da mafita mai ƙarfi ga fannin masana'antu.
Lokacin Saƙo: Agusta-26-2023