01. MTPA ndi MTPV
Mota yolumikizirana ya maginito yokhazikika ndiyo chida chachikulu choyendetsera magetsi atsopano ku China. Ndizodziwika bwino kuti pa liwiro lotsika, mota yolumikizirana ya maginito yokhazikika imagwiritsa ntchito mphamvu yayikulu yolamulira kuchuluka kwa mphamvu yamagetsi, zomwe zikutanthauza kuti ikapatsidwa mphamvu, mphamvu yocheperako yopangidwa imagwiritsidwa ntchito kuti ikwaniritse izi, potero kuchepetsa kutayika kwa mkuwa.
Kotero pa liwiro lalikulu, sitingagwiritse ntchito ma MTPA curve polamulira, tiyenera kugwiritsa ntchito MTPV, yomwe ndi maximum torque voltage ratio, polamulira. Izi zikutanthauza kuti, pa liwiro linalake, pangani mota kutulutsa maximum torque. Malinga ndi lingaliro la control yeniyeni, poganizira torque, liwiro lalikulu lingapezeke posintha iq ndi id. Ndiye kodi voltage imawonetsedwa kuti? Chifukwa iyi ndi maximum speed, voltage limit circle imakhazikika. Pokhapokha popeza maximum power point pa limit circle iyi ndi pomwe maximum torque point ingapezeke, yomwe ndi yosiyana ndi MTPA.
02. Mikhalidwe yoyendetsera galimoto
Kawirikawiri, pa liwiro la kutembenuka (lomwe limadziwikanso kuti liwiro la maziko), mphamvu ya maginito imayamba kufooka, yomwe ndi mfundo A1 pachithunzi chotsatirachi. Chifukwa chake, panthawiyi, mphamvu yamagetsi yobwerera idzakhala yayikulu. Ngati mphamvu ya maginito si yofooka panthawiyi, poganiza kuti kavalo wokankhira akukakamizidwa kukweza liwiro, idzakakamiza iq kukhala yoyipa, yosatha kutulutsa torque yotsogola, ndikukakamizidwa kulowa mu mkhalidwe wopanga magetsi. Zachidziwikire, mfundo iyi siyingapezeke pa graph iyi, chifukwa ellipse ikuchepa ndipo singapitirire pa mfundo A1. Tingochepetsa iq motsatira ellipse, kuwonjezera id, ndikuyandikira mfundo A2.
03. Mikhalidwe yopanga magetsi
Chifukwa chiyani kupanga magetsi kumafunikanso mphamvu ya maginito yofooka? Kodi mphamvu ya maginito yolimba siyenera kugwiritsidwa ntchito popanga iq yayikulu popanga magetsi pa liwiro lalikulu? Izi sizingatheke chifukwa pa liwiro lalikulu, ngati palibe mphamvu ya maginito yofooka, mphamvu ya electromotive reverse, mphamvu ya transformer electromotive, ndi mphamvu ya impedance electromotive ikhoza kukhala yayikulu kwambiri, yoposa mphamvu yamagetsi, zomwe zimapangitsa zotsatira zoyipa. Izi ndi SPO rectification yokonzanso mphamvu! Chifukwa chake, popanga mphamvu yamagetsi yothamanga kwambiri, maginito ofooka ayeneranso kuchitika, kuti magetsi opangidwa ndi inverter azitha kulamulidwa.
Tikhoza kusanthula. Tikaganiza kuti braking imayamba pamalo ogwirira ntchito othamanga kwambiri B2, omwe ndi feedback braking, ndipo liwiro likuchepa, palibe chifukwa chogwiritsa ntchito mphamvu ya maginito yofooka. Pomaliza, pamalo B1, iq ndi id zitha kukhalabe zofanana. Komabe, pamene liwiro likuchepa, negative iq yopangidwa ndi mphamvu ya reverse electromotive force idzakhala yochepa kwambiri. Pakadali pano, mphamvu yowonjezera imafunika kuti braking igwiritsidwe ntchito mphamvu iyambe.
04. Mapeto
Poyamba kuphunzira ma mota amagetsi, n'zosavuta kuzunguliridwa ndi zochitika ziwiri: kuyendetsa ndi kupanga magetsi. Ndipotu, choyamba tiyenera kulemba mabwalo a MTPA ndi MTPV muubongo wathu, ndikuzindikira kuti iq ndi id panthawiyi ndi zenizeni, zomwe zimapezeka poganizira mphamvu yamagetsi yotsutsana.
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 nazonso zili ndi malire, ndipo malamulo sangapitirire mabwalo awiri. Ngati bwalo la malire apano lapitirire, IGBT idzawonongeka; Ngati bwalo la malire a voltage lapitirire, magetsi adzawonongeka.
Mu ndondomeko yosinthira, iq ndi id ya cholinga, komanso iq ndi id yeniyeni, ndizofunikira kwambiri. Chifukwa chake, njira zowerengera zimagwiritsidwa ntchito mu uinjiniya kuti ziwongolere chiŵerengero choyenera cha iq's id pa liwiro losiyana ndi ma torque a cholinga, kuti zitheke bwino kwambiri. Zitha kuwoneka kuti mutazungulira mozungulira, chisankho chomaliza chimadalirabe pakuwongolera uinjiniya.
Nthawi yotumizira: Disembala-11-2023
