01. I-MTPA kanye ne-MTPV
Injini ehambisanayo kamagnethi ehlala njalo iyithuluzi eliyinhloko lokushayela iziteshi zamandla ezintsha zezimoto zamandla eShayina. Kwaziwa kahle ukuthi ngesivinini esiphansi, imoto ehambisanayo kamagnethi ehlala njalo isebenzisa ukulawulwa kwesilinganiso samanje se-torque esiphezulu, okusho ukuthi uma inikezwe i-torque, kusetshenziswa ugesi omncane owenziwe ukuze kufezwe lokho, ngaleyo ndlela kuncishiswe ukulahleka kwethusi.
Ngakho-ke ngesivinini esiphezulu, asikwazi ukusebenzisa ama-MTPA curve ukulawula, sidinga ukusebenzisa i-MTPV, okuyisilinganiso esiphezulu se-torque voltage, ukulawula. Okusho ukuthi, ngesivinini esithile, yenza i-motor ikhiphe i-torque ephezulu. Ngokomqondo wokulawula kwangempela, uma unikezwe i-torque, isivinini esiphezulu singatholakala ngokulungisa i-iq kanye ne-id. Ngakho-ke i-voltage ibonakaliswa kuphi? Ngenxa yokuthi lesi yisivinini esiphezulu, indilinga yomkhawulo we-voltage izinzile. Kuphela ngokuthola iphuzu lamandla eliphezulu kulo mbuthano womkhawulo lapho iphuzu lamandla eliphezulu lingatholakala khona, elihlukile ku-MTPA.
02. Izimo zokushayela
Ngokuvamile, ngejubane lephuzu lokujika (elaziwa nangokuthi ijubane lesisekelo), insimu yamagnetic iqala ukuba buthaka, okuyiphuzu A1 esithombeni esilandelayo. Ngakho-ke, kuleli phuzu, amandla e-electromotive angemuva azoba makhulu kakhulu. Uma insimu yamagnetic ingekho buthaka ngalesi sikhathi, uma sicabanga ukuthi inqola yokusunduza iphoqelekile ukwandisa isivinini, izophoqa i-iq ukuba ibe negative, ingakwazi ukukhipha i-torque eya phambili, futhi iphoqeleke ukungena esimweni sokukhiqizwa kwamandla. Vele, leli phuzu alikwazi ukutholakala kule grafu, ngoba i-ellipse iyancipha futhi ayikwazi ukuhlala endaweni A1. Singanciphisa i-iq kuphela endaweni ye-ellipse, sandise i-id, futhi sisondele endaweni A2.
03. Izimo zokukhiqizwa kukagesi
Kungani ukukhiqizwa kwamandla nakho kudinga amandla okudonsa abuthakathaka? Akufanele yini ukuthi amandla okudonsa aqinile asetshenziswe ukukhiqiza i-iq enkulu uma kukhiqizwa ugesi ngesivinini esiphezulu? Lokhu akunakwenzeka ngoba ngesivinini esiphezulu, uma kungekho mandla okudonsa abuthakathaka, amandla okudonsa angemuva, amandla okudonsa aguquguqukayo, kanye namandla okudonsa angaphakathi angaba makhulu kakhulu, adlule kakhulu amandla okuhambisa ugesi, okuholela emiphumeleni emibi kakhulu. Lesi simo siwukulungiswa okungalawulwa kwe-SPO ukukhiqizwa kwamandla! Ngakho-ke, ngaphansi kokukhiqizwa kwamandla ngesivinini esiphezulu, amandla okudonsa abuthakathaka nawo kumele enziwe, ukuze i-voltage ekhiqizwayo ye-inverter ilawuleke.
Singakuhlaziya. Uma sicabanga ukuthi ukubhuleka kuqala endaweni yokusebenza yesivinini esikhulu i-B2, okuyi-feedback braking, futhi isivinini sehla, asikho isidingo se-magnetism ebuthakathaka. Okokugcina, endaweni ye-B1, i-iq kanye ne-id kungahlala kungaguquguquki. Kodwa-ke, njengoba ijubane lehla, i-iq engemihle ekhiqizwa amandla e-electromotive angemuva izoncipha kancane kancane. Kuleli qophelo, kudingeka isinxephezelo samandla ukuze kufakwe ukubhuleka kokusetshenziswa kwamandla.
04. Isiphetho
Ekuqaleni kokufunda ama-motor kagesi, kulula ukuzungezwa yizimo ezimbili: ukushayela nokukhiqiza ugesi. Eqinisweni, kufanele siqale siqophe imibuthano ye-MTPA ne-MTPV ebuchosheni bethu, futhi siqaphele ukuthi i-iq kanye ne-id ngalesi sikhathi ziphelele, ezitholakala ngokucabangela amandla e-electromotive angemuva.
Ngakho-ke, uma kukhulunywa ngokuthi i-iq kanye ne-id zikhiqizwa kakhulu ngumthombo wamandla noma ngamandla e-electromotive abuyela emuva, kuncike ku-inverter ukuze kufezwe ukulawulwa. I-iq kanye ne-id nazo zinemikhawulo, futhi ukulawulwa akukwazi ukudlula imibuthano emibili. Uma indilinga yomkhawulo wamanje idluliwe, i-IGBT izolimala; Uma indilinga yomkhawulo we-voltage idluliwe, ukunikezwa kwamandla kuzolimala.
Enkambisweni yokulungisa, i-iq kanye ne-id yomgomo, kanye ne-iq kanye ne-id yangempela, kubalulekile. Ngakho-ke, izindlela zokulinganisa zisetshenziswa kubunjiniyela ukulinganisa isilinganiso sokwabiwa esifanele se-id ye-iq ngesivinini esihlukile kanye nama-torque okuqondiwe, ukuze kufezwe ukusebenza kahle kakhulu. Kungabonakala ukuthi ngemva kokujikeleza, isinqumo sokugcina sisancike ekulinganisweni kobunjiniyela.
Isikhathi sokuthunyelwe: Disemba 11-2023
