01. I-MTPA kunye ne-MTPV
Imagnethi esisigxina ye-synchronous motor sesona sixhobo sokuqhuba sezixhobo zamandla emoto entsha eTshayina. Kuyaziwa ukuba ngesantya esiphantsi, imagnethi esisigxina ye-synchronous motor ithatha ulawulo lobungakanani betorque yangoku, nto leyo ethetha ukuba xa kunikwa itorque, ubuncinci bombane obudibeneyo busetyenziselwa ukuyifeza, ngaloo ndlela kuncitshiswa ilahleko yobhedu.
Ke ngesantya esiphezulu, asikwazi ukusebenzisa iigophe zeMTPA zolawulo, kufuneka sisebenzise i-MTPV, eyona nto iphezulu ye-torque voltage ratio, ukulawula. Oko kukuthi, ngesantya esithile, yenza i-motor ikhuphe i-torque ephezulu. Ngokombono wolawulo lwangempela, unikwe i-torque, isantya esiphezulu sinokufezekiswa ngokulungelelanisa i-iq kunye ne-id. Ke ibonakaliswa phi amandla ombane? Ngenxa yokuba esi sesona santya siphezulu, isangqa somda wombane silungisiwe. Kuphela ngokufumana indawo ephezulu yamandla kulo mda wesangqa kunokufumaneka indawo ephezulu ye-torque, eyahlukileyo kwi-MTPA.
02. Iimeko zokuqhuba
Ngokuqhelekileyo, kwindawo yokuguqula i-velocity (eyaziwa nangokuthi i-base velocity), i-magnetic field iqala ubuthathaka, eyona nto i-A1 kumfanekiso olandelayo. Ke ngoko, kweli nqanaba, amandla e-electromotive angasemva aya kuba mkhulu. Ukuba i-magnetic field ayinamandla ngeli xesha, ucinga ukuba i-pushcart iyanyanzeliswa ukuba inyuse isantya, iya kunyanzela i-iq ukuba ibe yimbi, ayikwazi ukuvelisa i-torque phambili, kwaye inyanzeliswe ukuba ingene kwimeko yokuvelisa amandla. Ngokuqinisekileyo, le ngongoma ayinakufumaneka kule grafu, kuba i-ellipse iyancipha kwaye ayikwazi ukuhlala kwindawo ye-A1. Sinokuyinciphisa kuphela i-iq ecaleni kwe-ellipse, sandise i-id, kwaye sisondele kwindawo A2.
03. Iimeko zokuvelisa umbane
Kutheni ukuveliswa kwamandla nako kufuna imagnethi ebuthathaka? Akumelanga ukuba imagnethi eyomeleleyo isetyenziswe ukwenza i-iq enkulu xa kusenziwa umbane ngesantya esiphezulu? Oku akunakwenzeka kuba kwizantya eziphezulu, ukuba akukho mhlaba wemagnethi ubuthathaka, amandla ombane obuyela umva, amandla e-electromotive transformer, kunye ne-impedance electromotive force inokuba nkulu kakhulu, igqithise kakhulu umbane wobonelelo lombane, okukhokelela kwiziphumo ezibi. Le meko yeyokuvelisa amandla okulungiswa kwe-SPO okungalawulwayo! Ke ngoko, phantsi kokuveliswa kwamandla ngesantya esiphezulu, i-magnetization ebuthathaka nayo kufuneka yenziwe, ukuze i-voltage ye-inverter eyenziwe ilawuleke.
Sinokuyihlalutya. Ukucinga ukuba i-braking iqala kwi-high-speed operation point B2, okuyi-feedback braking, kwaye isantya siyancipha, akukho mfuneko ye-magnetism ebuthathaka. Ekugqibeleni, kwinqanaba le-B1, i-iq kunye ne-id ingahlala ingatshintshi. Nangona kunjalo, njengoko isantya sincipha, i-iq engalunganga eveliswa yi-reverse ye-electromotive force iya kuba ngaphantsi kwaye incinci ngokwaneleyo. Ngeli xesha, imbuyekezo yamandla iyafuneka ukungena kwi-braking yokusetyenziswa kwamandla.
04. Isiphelo
Ekuqaleni kokufunda iimoto zombane, kulula ukujikelezwa ngeemeko ezimbini: ukuqhuba kunye nokuvelisa umbane. Ngapha koko, kufuneka siqale sikrole izangqa ze-MTPA kunye ne-MTPV kwingqondo yethu, kwaye siqonde ukuba i-iq kunye ne-id ngeli xesha ziphelele, zifunyenwe ngokuthathela ingqalelo amandla e-electromotive reverse.
Ke, malunga nokuba i-iq kunye ne-id ubukhulu becala ziveliswa ngumthombo wamandla okanye ngamandla e-electromotive ebuyela umva, kuxhomekeke kwisiguquli ukufezekisa ummiselo. I-iq kunye ne-id nazo zinemida, kwaye ummiselo awukwazi ukudlula izangqa ezibini. Ukuba isangqa somda wangoku sigqithisiwe, i-IGBT iya konakala; Ukuba isangqa somda wombane sigqithisiwe, unikezelo lwamandla luya konakala.
Kwinkqubo yohlengahlengiso, i-iq kunye ne-id yethagethi, kunye ne-iq yangempela kunye ne-id, zibalulekile. Ngoko ke, iindlela zokulinganisa zisetyenziselwa ubunjineli ukulinganisa umlinganiselo ofanelekileyo wolwabiwo lwe-id ye-iq kwizantya ezahlukeneyo kunye neetorque ezijoliswe kuyo, ukuze kuphunyezwe ukusebenza kakuhle. Kuyabonakala ukuba emva kokujikeleza, isigqibo sokugqibela sisaxhomekeke kuhlengahlengiso lobunjineli.
Ixesha lokuposa: Dec-11-2023
