He ʻelua mau mea nui ka motika DC: he rotor a me kahi stator. Loaʻa i ka rotor kahi kiko toroidal me nā puka no ka hoʻopaʻa ʻana i nā wili a i ʻole nā ​​wili. Wahi a ke kānāwai o Faraday, i ka wā e kaʻawili ai ke kumu i loko o ke kahua magnetic, e hoʻokomo ʻia ka volta a i ʻole ka mana uila i loko o ka coil, a ʻo kēia hiki ke hoʻoulu ʻia e hoʻoheheʻe i ke kahe o kēia manawa, i kapa ʻia ʻo eddy current.

ʻO nā kahawai Eddy ka hopena o ka hoʻololi ʻana o ke kumu i lokokamākū mākia

ʻO Eddy current kahi ʻano o ka poho magnetic, a ʻo ka nalowale o ka mana ma muli o ke kahe ʻana o ke au eddy ua kapa ʻia ʻo eddy current loss. ʻO ka poho Hysteresis kekahi mea ʻē aʻe o ka pohō magnetic, a ʻo kēia mau poho e hoʻohua i ka wela a hoʻemi i ka pono o ke kaʻa.

ʻO ka hoʻomohala ʻana oeHoʻopili ʻia ke au ddy e ke kūpaʻa o kāna mea kahe

No kēlā me kēia mea magnetic, aia kahi pilina inverse ma waena o ka ʻāpana cross-sectional o ka mea a me kona kūpaʻa, ʻo ia hoʻi, ʻo ka mea i hoʻemi ʻia e alakaʻi i ka piʻi ʻana o ke kūʻē, a laila e alakaʻi i ka emi ʻana o nā au eddy. ʻO kahi ala e hōʻemi ai i ka ʻāpana keʻa ʻo ia ka hana ʻana i ka mea lahilahi.

E wehewehe ana kēia i ke kumu i hana ʻia ai ke kumu kaʻa me nā ʻāpana hao lahilahi (i kapa ʻianā lamination kaʻa uila) ma mua o hoʻokahi ʻāpana hao nui a paʻa. ʻOi aku ke kūʻē ʻana o kēia mau pepa pākahi ma mua o ka pepa paʻa hoʻokahi, a no laila e hoʻohua mai i nā poho eddy current a me nā poho eddy current haʻahaʻa.

ʻOi aku ka liʻiliʻi o ka huina o nā au eddy i loko o nā cores laminated ma mua o nā cores paʻa

Hoʻokaʻawale ʻia kēia mau papa lamination mai kekahi i kekahi, a hoʻohana mau ʻia kahi papa o ka lacquer e pale aku ai i nā au eddy "lele" mai kahi hoʻopaʻa a hoʻopaʻa. ʻO ka pilina huinahā hoʻohuli ma waena o ka mānoanoa waiwai a me ka poho eddy o kēia manawa, ʻo ia hoʻi, ʻo ka emi ʻana o ka mānoanoa e hopena nui i ka nui o ka poho. No laila, ʻo Gator, he Kinaʻoluʻolu o ka hale hana rotor, e hooikaika ana e hana i na laminations kumu nui e like me ka lahilahi mai ke kuanaana mai o ka hana ana a me ke kumu kuai, me na mokini DC hou e hoohana mau ana i na lamination o 0.1 a 0.5 mm manoanoa.

Ka hopena

Pono ka eddy current loss mechanism e hoʻopaʻa ʻia ke kaʻa me nā ʻāpana insulating o nā ahu e pale ai i nā au eddy "lele" mai nā laminations a i nā laminations.