Chifukwa Chiyani Kuwongolera Maginito Ofooka Ndikofunikira Kwa Ma Motors Othamanga Kwambiri?

01. MTPA ndi MTPV
Permanent maginito synchronous motor ndiye chida chachikulu choyendetsera magetsi ku China.Ndizodziwika bwino kuti pa liwiro lotsika, maginito okhazikika a synchronous motor amatenga kuwongolera kwa torque pakalipano, zomwe zikutanthauza kuti kupatsidwa torque, kaphatikizidwe kakang'ono kamene kamagwiritsidwa ntchito kuti tikwaniritse, potero kumachepetsa kutayika kwa mkuwa.

Chifukwa chake pa liwiro lalitali, sitingagwiritse ntchito ma MTPA ma curve pakuwongolera, tifunika kugwiritsa ntchito MTPV, yomwe ndi chiŵerengero champhamvu kwambiri cha torque, pakuwongolera.Ndiko kunena kuti, pa liwiro linalake, pangani ma motor kutulutsa torque yayikulu.Malinga ndi lingaliro la kuwongolera kwenikweni, kupatsidwa torque, liwiro lalikulu limatha kupezedwa mwa kusintha iq ndi id.Ndiye voteji ikuwonekera pati?Chifukwa ichi ndiye liwiro lalikulu, bwalo la malire amagetsi limakhazikika.Pokhapokha popeza malo opitilira mphamvu pazigawo zozungulira izi mutha kupeza ma torque apamwamba, omwe ndi osiyana ndi MTPA.

02. Zinthu zoyendetsera galimoto

Nthawi zambiri, potembenuza liwiro (lomwe limatchedwanso kuti base velocity), mphamvu ya maginito imayamba kufooka, yomwe ndi mfundo A1 mu chithunzi chotsatira.Chifukwa chake, pakadali pano, mphamvu ya reverse electromotive idzakhala yayikulu.Ngati mphamvu ya maginito siili yofooka panthawiyi, poganiza kuti galimotoyo ikukakamizika kuonjezera liwiro, idzakakamiza iq kukhala yoipa, yosatha kutulutsa torque, ndikukakamizika kulowa mu chikhalidwe cha mphamvu.Zoonadi, mfundoyi siingapezeke pa graph iyi, chifukwa ellipse ikucheperachepera ndipo sangathe kukhala pamalo A1.Titha kuchepetsa iq pamodzi ndi ellipse, kuwonjezera id, ndikuyandikira point A2.

03. Mikhalidwe yopangira mphamvu

Chifukwa chiyani kupanga magetsi kumafunikiranso maginito ofooka?Kodi maginito amphamvu sakuyenera kugwiritsidwa ntchito kupanga iq yayikulu popanga magetsi pa liwiro lalikulu?Izi sizingatheke chifukwa pa liwiro lalitali, ngati mulibe mphamvu ya maginito yofooka, mphamvu ya reverse electromotive, transformer electromotive force, ndi impedance electromotive force ingakhale yaikulu kwambiri, yoposa mphamvu yamagetsi, zomwe zimabweretsa zotsatira zoopsa.Izi ndi SPO osalamulirika kukonza mphamvu kupanga mphamvu!Chifukwa chake, pansi pamagetsi othamanga kwambiri, maginito ofooka ayeneranso kuchitidwa, kuti magetsi opangidwa ndi inverter athe kuwongolera.

Tikhoza kuzisanthula.Pongoganiza kuti braking imayambira pamalo othamanga kwambiri a B2, omwe ndi kubweza mayankho, ndipo liwiro limachepa, palibe chifukwa chosowa maginito ofooka.Pomaliza, pa B1, iq ndi id zitha kukhala zosasintha.Komabe, pamene liwiro likucheperachepera, iq yoyipa yopangidwa ndi reverse electromotive mphamvu idzakhala yochepa komanso yochepa.Panthawiyi, chipukuta misozi chimafunika kuti mulowetse mabuleki ogwiritsira ntchito mphamvu.

04. Mapeto

Kumayambiriro kwa kuphunzira magalimoto amagetsi, n'zosavuta kuzunguliridwa ndi zochitika ziwiri: kuyendetsa galimoto ndi kupanga magetsi.M'malo mwake, tiyenera kulemba mabwalo a MTPA ndi MTPV muubongo wathu, ndikuzindikira kuti iq ndi id pakadali pano ndizotsimikizika, zopezedwa poganizira mphamvu ya reverse electromotive.

Chifukwa chake, ngati iq ndi id zimapangidwa makamaka ndi gwero lamagetsi kapena ndi mphamvu yosinthira ma electromotive, zimatengera inverter kuti ikwaniritse malamulo.iq ndi id zilinso ndi malire, ndipo malamulo sangadutse mabwalo awiri.Ngati malire apano adutsa, IGBT idzawonongeka;Ngati bwalo la malire a voteji lidutsa, mphamvu yamagetsi idzawonongeka.

Pakusintha, iq ndi id ya chandamale, komanso iq yeniyeni ndi id, ndizofunikira.Chifukwa chake, njira zoyeserera zimagwiritsidwa ntchito muuinjiniya kuti athe kugawa chiŵerengero choyenera cha id ya iq pa liwiro losiyana ndi ma torque a chandamale, kuti akwaniritse bwino.Zitha kuwoneka kuti mutazungulira mozungulira, chigamulo chomaliza chimadalirabe pakusintha kwaumisiri.