Hoʻomaka ka mōʻaukala o nā kaʻa uila i ka makahiki 1820, i ka wā i ʻike ai ʻo Hans Christian Oster i ka hopena magnetic o ke au uila, a i hoʻokahi makahiki ma hope ua ʻike ʻo Michael Faraday i ka hoʻololi electromagnetic a kūkulu i ka mīkini DC mua.Ua ʻike ʻo Faraday i ka induction electromagnetic i ka makahiki 1831, akā ʻaʻole i ka makahiki 1883 i hana ai ʻo Tesla i ka motika induction (asynchronous).I kēia mau lā, mau nā ʻano nui o nā mīkini uila, DC, induction (asynchronous) a me ka synchronous, e pili ana i nā kumumanaʻo i kūkulu ʻia a ʻike ʻia e Alstead, Faraday a me Tesla ma mua o hoʻokahi haneli mau makahiki i hala.
Mai ka hoʻomaka ʻana o ka induction motor, ua lilo ia i mea hoʻohana nui loa i kēia lā ma muli o nā pono o ka induction motor ma mua o nā kaʻa ʻē aʻe.ʻO ka pōmaikaʻi nui, ʻaʻole pono nā mīkini induction i kahi pilina uila ma waena o nā ʻāpana kū a me nā ʻāpana o ke kaʻa, no laila, ʻaʻole lākou e koi i nā mīkini commutators (brushes) a he mau kaʻa mālama manuahi lākou.Loaʻa i nā kaʻa induction nā hiʻohiʻona o ke kaumaha māmā, haʻahaʻa inertia, kiʻekiʻe kiʻekiʻe, a me ka mana overload ikaika.ʻO ka hopena, ʻoi aku ka maʻalahi, ʻoi aku ka ikaika, a ʻaʻole hāʻule i ka wikiwiki kiʻekiʻe.Eia kekahi, hiki ke hana i ka motika i loko o kahi lewa pahū me ka ʻole o ka sparkling.
Ma ka noʻonoʻo ʻana i nā pono āpau i luna, ua manaʻo ʻia nā motika induction he mea hoʻololi i ka ikehu electromechanical maikaʻi loa, akā naʻe, koi pinepine ʻia ka ikehu mechanical i nā wikiwiki ʻokoʻa, kahi ʻaʻole he mea liʻiliʻi nā ʻōnaehana hoʻokele wikiwiki.ʻO ke ala maikaʻi wale nō e hoʻololi ai i ka wikiwiki stepless ʻo ka hāʻawi ʻana i ʻekolu-phase voltage me ke alapine hoʻololi a me ka amplitude no ka mīkini asynchronous.ʻO ka wikiwiki o ka rotor e pili ana i ka wikiwiki o ke kahua magnetic rotating i hāʻawi ʻia e ka stator, no laila koi ʻia ka hoʻololi pinepine ʻana.Pono ka volta hoʻololi, hoʻemi ʻia ka impedance kaʻa ma nā alapine haʻahaʻa, a pono e kaupalena ʻia ke ʻano o kēia manawa ma ka hōʻemi ʻana i ka volta hāʻawi.
Ma mua o ka hiki ʻana mai o ka uila uila, ua hoʻokō ʻia ka mana hoʻoemi wikiwiki o nā kaʻa induction ma ka hoʻololi ʻana i nā wili stator ʻekolu mai kahi delta i kahi pili hōkū, kahi i hōʻemi ai i ka volta ma waena o nā wili kaʻa.ʻOi aku ka ʻoi aku o ʻekolu wili stator i nā kaʻa induction e ʻae i ka hoʻololi ʻana i ka helu o nā pole.Eia nō naʻe, ʻoi aku ke kumukūʻai o ke kaʻa me nā wili he nui no ka mea e koi ana ka kaʻa i ʻoi aku ma mua o ʻekolu mau awa pili a loaʻa nā wikiwiki discrete kikoʻī wale nō.Hiki ke hoʻokō ʻia kekahi ʻano hana ʻē aʻe o ka hoʻokele wikiwiki me ka ʻeha rotor induction motor, kahi e lawe ʻia ai nā hopena wili rotor ma nā apo slip.Eia nō naʻe, ʻike ʻia kēia ala e hoʻoneʻe i ka hapa nui o nā pono o nā kaʻa induction, ʻoiai e hoʻolauna pū ana i nā poho hou, hiki ke hopena i ka hana maikaʻi ʻole ma ke kau ʻana i nā mea kū'ē a i ʻole nā reactances i ke kaʻina ma nā wili stator o kahi kaʻa induction.
I kēlā manawa, ʻo nā ʻano hana ma luna wale nō ka mea i hiki ke hoʻokele i ka wikiwiki o nā kaʻa induction, a ua noho mua nā motika DC me nā kaʻa holo wikiwiki ʻole i ʻae ʻia ʻaʻole wale i ʻae ʻia ka hana ma nā quadrants ʻehā, akā ua uhi pū kekahi i kahi ākea ākea.He maikaʻi loa lākou a loaʻa ka mana kūpono a me ka pane hoʻoikaika maikaʻi, akā naʻe, ʻo kona hemahema nui ka koi koi no nā brushes.
i ka hopena
I nā makahiki 20 i hala iho nei, ua holomua ka ʻenehana semiconductor, e hāʻawi ana i nā kūlana kūpono no ka hoʻomohala ʻana i nā ʻōnaehana kaʻa kaʻa induction kūpono.Hāʻule kēia mau kūlana i ʻelua ʻāpana nui:
(1) Hoʻemi i ke kumukūʻai a me ka hoʻomaikaʻi ʻana i ka hana o nā mea hoʻololi uila uila.
(2) Hiki ke hoʻokō i nā algorithms paʻakikī i nā microprocessors hou.
Eia nō naʻe, pono e hana ʻia kahi mea e hoʻomohala ai i nā ala kūpono e kāohi ai i ka wikiwiki o nā motika induction nona ka paʻakikī, ʻokoʻa i ko lākou maʻalahi mechanical, he mea koʻikoʻi e pili ana i kā lākou hana makemakika (multivariate a me nonlinear).
Ka manawa hoʻouna: ʻAukake-05-2022