01. I-MTPA ne-MTPV
I-Permanent magnet synchronous motor iyithuluzi lokushayela eliyinhloko lezitshalo zamandla emoto entsha e-China. Kuyaziwa ukuthi ngesivinini esiphansi, i-magnetic synchronous motor unomphela isebenzisa ukulawulwa kwesilinganiso esiphezulu se-torque yamanje, okusho ukuthi uma kunikezwe i-torque, kusetshenziselwa ukulinganisa okuncane okuhlanganisiwe ukuze kufezeke, ngaleyo ndlela kuncishiswe ukulahlekelwa kwethusi.
Ngakho-ke ngesivinini esikhulu, asikwazi ukusebenzisa amajika e-MTPA ukulawula, sidinga ukusebenzisa i-MTPV, okuyisilinganiso esiphezulu samandla kagesi we-torque, ukuze silawule. Okusho ukuthi, ngesivinini esithile, yenza i-motor ikhiphe i-torque ephezulu. Ngokomqondo wokulawula kwangempela, uma kunikezwe itorque, isivinini esiphezulu singafinyelelwa ngokulungisa i-iq ne-id. Ngakho-ke i-voltage ibonakala kuphi? Ngenxa yokuthi lesi yisivinini esiphezulu, isiyingi somkhawulo we-voltage silungisiwe. Kuphela ngokuthola indawo enkulu yamandla kulo mbuthano womkhawulo lapho kungatholakala khona iphuzu eliphezulu letorque, elihlukile kune-MTPA.
02. Izimo zokushayela
Ngokuvamile, lapho kuphenduka isivinini (esaziwa nangokuthi i-base velocity), inkambu kazibuthe iqala ukuba buthaka, okuyiphuzu elingu-A1 emfanekisweni olandelayo. Ngakho-ke, kuleli qophelo, amandla e-electromotive reverse azoba makhulu uma kuqhathaniswa. Uma inkambu kazibuthe ingekho buthaka ngalesi sikhathi, kucatshangwa ukuthi inqola iphoqeleka ukuthi inyuse isivinini, izophoqa i-iq ukuthi ibe negethivu, ayikwazi ukukhipha i-torque eya phambili, futhi iphoqelelwe ukuthi ingene esimweni sokukhiqiza amandla. Yiqiniso, leli phuzu alikwazi ukutholakala kule grafu, ngoba i-ellipse iyancipha futhi ayikwazi ukuhlala endaweni engu-A1. Singanciphisa kuphela i-iq ku-ellipse, sikhulise i-id, futhi sisondele ephoyintini elingu-A2.
03. Izimo zokuphehla ugesi
Kungani ukukhiqizwa kwamandla nakho kudinga uzibuthe obuthakathaka? Akufanele yini uzibuthe oqinile usetshenziselwe ukukhiqiza i-iq enkulu uma kuphehlwa ugesi ngesivinini esikhulu? Lokhu akwenzeki ngoba ngesivinini esikhulu, uma ingekho inkambu kazibuthe ebuthaka, amandla e-electromotive reverse, amandla e-electromotive e-transformer, namandla e-electromotive impedance angase abe kukhulu kakhulu, awedlule kude amandla kagesi, okuholela emiphumeleni emibi kakhulu. Lesi simo singugesi wokulungisa ongalawuleki we-SPO! Ngakho-ke, ngaphansi kokukhiqizwa kwamandla ngesivinini esikhulu, i-magnetization ebuthakathaka kufanele futhi yenziwe, ukuze i-voltage ye-inverter ekhiqiziwe ilawuleke.
Singakwazi ukuyihlaziya. Uma sicabanga ukuthi i-braking iqala endaweni yokusebenza enesivinini esiphezulu i-B2, okuyi-feedback braking, futhi ijubane liyehla, asikho isidingo sokuqina kazibuthe. Ekugcineni, endaweni ethi B1, iq ne-id zingahlala zingashintshi. Kodwa-ke, njengoba isivinini sincipha, i-iq eyinegethivu ekhiqizwa amandla e-electromotive ehlane izoba kancane kancane ngokwanele. Kuleli qophelo, isinxephezelo samandla siyadingeka ukuze kufakwe amabhuleki okusetshenziswa 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 ne-id ngalesi sikhathi ziphelele, zitholwe ngokucabangela amandla e-electromotive ahlanekezelwe.
Ngakho-ke, mayelana nokuthi i-iq ne-id ngokuvamile kukhiqizwa umthombo wamandla noma amandla e-electromotive ahlehlayo, kuncike kusiguquli ukuze kuzuzwe ukulawulwa. I-iq ne-id nazo zinemikhawulo, futhi umthetho awukwazi ukudlula imibuthano emibili. Uma umkhawulo wamanje weqiwa, i-IGBT izolimala; Uma isiyingi somkhawulo kagesi sidlula, ukunikezwa kwamandla kuzolimala.
Enqubweni yokulungisa, i-iq ne-id yalokho okuqondiwe, kanye ne-iq yangempela kanye ne-id, kubalulekile. Ngakho-ke, izindlela zokulinganisa zisetshenziswa kubunjiniyela ukuze kulinganiswe isilinganiso esifanele sokwabiwa kwe-id ye-iq ngesivinini esihlukile namatokhi okuqondiwe, ukuze kuzuzwe ukusebenza kahle okungcono kakhulu. Kungabonakala ukuthi ngemva kokuzungeza, isinqumo sokugcina sisancike ekulinganisweni kobunjiniyela.
Isikhathi sokuthumela: Dec-11-2023
