01. I-MTPA kunye ne-MTPV
Imoto ehambelanayo yemagnethi esisigxina yeyona nto iphambili eqhuba izikhululo zamandla ezintsha zezithuthi zamandla eTshayina. Kuyaziwa ukuba ngesantya esiphantsi, imotor ehambelanayo yemagnethi esisigxina isebenzisa ulawulo oluphezulu lwe-torque current ratio, oko kuthetha ukuba xa kukho i-torque, i-minimum synthesized current isetyenziselwa ukuyifezekisa, ngaloo ndlela inciphisa ukulahleka kobhedu.
Ngoko ke ngesantya esiphezulu, asinakusebenzisa ii-MTPA curves ukulawula, kufuneka sisebenzise i-MTPV, eyi-maximum torque voltage ratio, ukulawula. Oko kukuthi, ngesantya esithile, yenza i-motor output ibe yi-maximum torque. Ngokwengcamango yolawulo lokwenyani, xa unikwa i-torque, isantya esiphezulu sinokufezekiswa ngokulungelelanisa i-iq kunye ne-id. Ngoko ke i-voltage ibonakaliswa phi? Ngenxa yokuba esi sisantya esiphezulu, isangqa somda we-voltage sizinzile. Kuphela kukufumana indawo yamandla ephezulu kwesi sangqa somda apho i-maximum torque point ingafumaneka khona, eyahlukileyo kwi-MTPA.
02. Iimeko zokuqhuba
Ngokwesiqhelo, kwisantya sokujika (esaziwa ngokuba yisantya sesiseko), amandla emagnethi aqala ukuba buthathaka, nto leyo eyi-point A1 kumfanekiso olandelayo. Ke ngoko, kweli nqanaba, amandla e-electromotive angasemva aya kuba makhulu. Ukuba amandla emagnethi abuthathaka ngeli xesha, xa ucinga ukuba i-pushcart inyanzelekile ukuba yonyuse isantya, iya kunyanzela i-iq ukuba ibe negative, ingakwazi ukukhupha i-torque phambili, kwaye inyanzelekile ukuba ingene kwimeko yokuvelisa amandla. Kakade ke, eli nqanaba alinakufumaneka kule grafu, kuba i-ellipse iyancipha kwaye ayinakuhlala kwindawo ye-A1. Singanciphisa i-iq kuphela ecaleni kwe-ellipse, sonyuse i-id, kwaye sisondele kwindawo ye-A2.
03. Iimeko zokuvelisa umbane
Kutheni ukuveliswa kwamandla kufuna imagnetism ebuthathaka? Akufanele na ukuba imagnetism enamandla isetyenziswe ukuvelisa i-iq enkulu xa kuveliswa umbane ngesantya esiphezulu? Oku akunakwenzeka kuba ngesantya esiphezulu, ukuba akukho magnetic field ebuthathaka, i-reverse electromotive force, i-transformer electromotive force, kunye ne-impedance electromotive force zinokuba zikhulu kakhulu, zidlule kakhulu i-voltage yombane, nto leyo ebangela iziphumo ezimbi. Le meko yi-SPO rectification engalawulwayo yokuvelisa umbane! Ke ngoko, phantsi kokuveliswa kombane ngesantya esiphezulu, i-magnetization ebuthathaka nayo kufuneka yenziwe, ukuze i-inverter voltage evelisiweyo ilawuleke.
Singakuhlalutya. Ukuba i-braking iqala kwindawo yokusebenza ekhawulezayo i-B2, eyi-feedback braking, kwaye isantya siyancipha, akukho mfuneko ye-weak magnetism. Okokugqibela, kwindawo i-B1, i-iq kunye ne-id zinokuhlala zingaguquguquki. Nangona kunjalo, njengoko isantya sincipha, i-negative iq eveliswa yi-reverse electromotive force iya kuba ncinci ngokwaneleyo. Kule ndawo, kufuneka imbuyekezo yamandla ukuze kungene i-braking yokusetyenziswa kwamandla.
04. Isiphelo
Ekuqaleni kokufunda iimoto zombane, kulula ukujikelezwa ziimeko ezimbini: ukuqhuba nokuvelisa umbane. Enyanisweni, kufuneka siqale sikrole izangqa zeMTPA kunye neMTPV engqondweni yethu, kwaye siqonde ukuba i-iq kunye ne-id ngeli xesha ziphelele, zifunyenwe ngokuqwalasela amandla e-electromotive angasemva.
Ngoko ke, malunga nokuba i-iq kunye ne-id ziveliswa kakhulu ngumthombo wamandla okanye ngamandla e-electromotive angasemva, kuxhomekeke kwi-inverter ukuze kufezekiswe ummiselo. I-iq kunye ne-id nazo zinemida, kwaye ummiselo awunakudlula izangqa ezibini. Ukuba isangqa somda wangoku sidluliwe, i-IGBT iya konakala; Ukuba isangqa somda we-voltage sidluliwe, umbane uya konakala.
Kwinkqubo yokulungisa, i-iq kunye ne-id yethagethi, kunye ne-iq kunye ne-id yokwenyani, zibalulekile. Ke ngoko, iindlela zokulinganisa zisetyenziswa kubunjineli ukulinganisa umlinganiselo ofanelekileyo wokwabiwa kwe-id ye-iq ngesantya esahlukileyo kunye nee-torque zethagethi, ukuze kufezekiswe ukusebenza kakuhle. Kuyabonakala ukuba emva kokujikeleza, isigqibo sokugqibela sisaxhomekeke kumlinganiselo wobunjineli.
Ixesha lokuthumela: Disemba-11-2023
