Ke hoʻohana nei ka mīkini paʻa paʻa i nā magnet mau loa e hoʻohua i ke kahua magnetic o ka kaʻa, ʻaʻole koi i nā coils excitation a i ʻole ka hoʻoulu ʻana i kēia manawa, he kiʻekiʻe kiʻekiʻe a me ke ʻano maʻalahi, a he mīkini mālama ola maikaʻi. Me ka hiki ʻana mai o nā mea magnet mau loa kiʻekiʻe a me ka hoʻomohala wikiwiki ʻana o ka ʻenehana mana.E ʻoi aku ka nui o ka hoʻohana ʻana i nā motor magnet mau loa. 
ʻO ka mōʻaukala hoʻomohala ʻana o ka mīkini magnet mau loa ʻO ka hoʻomohala ʻana i nā motika magnet paʻa e pili kokoke ana i ka hoʻomohala ʻana i nā mea magnet mau loa.ʻO koʻu ʻāina ka ʻāina mua o ka honua e ʻike i nā waiwai magnetic o nā mea magnet mau loa a hoʻohana iā lākou i ka hoʻomaʻamaʻa. ʻOi aku ma mua o ʻelua kaukani makahiki i hala aku nei, ua hoʻohana ko mākou ʻāina i nā waiwai magnetic o nā mea magnet paʻa e hana i kahi panana, kahi i hana nui i ka hoʻokele, ka pūʻali koa a me nā kahua ʻē aʻe. Ua lilo ia i hoʻokahi o nā mea nui ʻehā i koʻu ʻāina kahiko. ʻO ka kaʻa kaʻa mua o ka honua i ʻike ʻia i ka makahiki 1820, he ʻenekini paʻa mau loa me kahi mākēneki hoʻohiwahiwa i hana ʻia e kahi magnet mau loa.Eia nō naʻe, ʻo ka mea magnetite mau loa i hoʻohana ʻia i kēlā manawa he magnetite maoli (Fe3O4), he haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa, a ʻo ke kaʻa i hana ʻia mai ia mea he mea nui, a ua hoʻololi koke ʻia e kahi mīkini hoʻohiwahiwa uila. Me ka hoʻomohala wikiwiki ʻana o nā kaʻa like ʻole a me ka ʻike ʻana o nā mea magnetizer i kēia manawa, ua hana ka poʻe i ka noiʻi hohonu e pili ana i ka mīkini, ka haku mele ʻana a me ka ʻenehana hana ʻana i nā mea magnet mau loa, a ua loaʻa iā lākou ke kila kalapona a me ke kila tungsten. ma kahi o 2.7 kJ/m3 ), ke kila cobalt (ʻo ka nui o ka ikehu ikehu ma kahi o 7.2 kJ/m3) a me nā mea hoʻohana mau. ʻO ka mea nui, ʻo ka AlNiCo mau magnets i ʻike ʻia i nā makahiki 1930 (hiki i ka huahana ikehu magnetic kiʻekiʻe ke hiki i 85 kJ/m3) a me nā magnet permanent ferrite i ʻike ʻia i nā makahiki 1950 (hiki i ka huahana ikehu magnetic kiʻekiʻe ke hiki i 40 kJ/m3) ʻano ʻano magnetic like ʻole. Me ka hoʻomaikaʻi maikaʻi ʻana, ua hoʻohana nā ʻokoʻa micro a me nā mīkini liʻiliʻi i ka excitation magnet mau loa.He liʻiliʻi ka mana o nā mīkini magnet mau loa e like me ka liʻiliʻi o nā milliwatts a me ka nui o nā kilowatts. Hoʻohana nui ʻia lākou i ka pūʻali koa, ʻoihana a me ka hana mahiʻai a me ke ola o kēlā me kēia lā, a ua piʻi nui ka huahana.Ma ke ʻano like, i kēia manawa, ua hana ʻia nā holomua i ka manaʻo hoʻolālā, ke ʻano helu helu, ka magnetization a me ka ʻenehana hana o nā kaʻa magnet mau loa, a ua hoʻokumu ʻia kahi hoʻonohonoho o ka nānā ʻana a me nā ʻano noiʻi i hōʻike ʻia e ke kiʻina hana o nā magnet mau loa. 
Eia naʻe, he haʻahaʻa (36-160 kA/m) ka coercivity o AlNiCo mau mākēneki mau loa, a ʻaʻole kiʻekiʻe (0.2-0.44 T) ka nui o ka remanence o nā ferrite mau loa (0.2-0.44 T), e kaupalena ana i kā lākou noi i nā kaʻa.A hiki i nā makahiki 1960 a me 1980, puka mai kekahi ma hope o kekahi, me ko lākou kiʻekiʻe remanence kiʻekiʻe, kiʻekiʻe coercivity, kiʻekiʻe magnetic ikehu huahana a me linear demagnetization. kāʻei. ʻO nā waiwai magnetic maikaʻi loa o ka mīkini paʻa paʻa e kūpono loa no ka hana ʻana i nā kaʻa uila, no laila ua komo ka hoʻomohala ʻana o nā kaʻa magnet mau i kahi wā mōʻaukala hou. ʻO nā hiʻohiʻona a me ka hoʻohana ʻana o nā kaʻa magnet paʻa Ke hoʻohālikelike ʻia me nā mīkini hoʻohiwahiwa uila maʻamau, nā ʻenekini paʻa mau loa, ʻoi aku ka loaʻa ʻana o nā ʻenekini paʻa mau loa o ka honua, loaʻa nā pōmaikaʻi e like me ka hana maʻalahi a me ka hana hilinaʻi; liʻiliʻi a me ke kaumaha māmā; haʻahaʻa poho a me ka hana kiʻekiʻe; hiki ke loli a ʻokoʻa ke ʻano a me ka nui o ke kaʻa. .No laila, ākea loa ka laulā noi, e uhi ana i nā wahi āpau o ka aerospace, ka pale aupuni, ka hana ʻenehana a me ka mahiʻai a me ke ola o kēlā me kēia lā.Hōʻike ʻia nā hiʻohiʻona nui o kekahi mau mīkini magnet mau loa a me kā lākou noi nui. Ke hoʻohālikelike ʻia me ka mea hana kuʻuna, ʻaʻole pono ka mīkini paʻa paʻa synchronous generator o ka honua paʻa mau loa i ke apo ohi a me kahi mea palaki, a he ʻano maʻalahi a hoʻemi i ka helu hāʻule.ʻO ka hoʻohana ʻana i nā mea magnet mau loa hiki ke hoʻonui i ka nui o ka ea, hoʻonui i ka wikiwiki o ka kaʻa i ka waiwai maikaʻi loa, a hoʻomaikaʻi i ka ratio power-to-mass.Aneane nā mea hana hoʻohana i hoʻohana ʻia i ka mokulele a me ka aerospace e hoʻohana i nā mea hoʻomohala mau loa.ʻO kāna mau huahana maʻamau he 150 kVA 14-pole 12 000 r/min～21 000 r/min a me 100 kVA 60 000 r/min rare earth cobalt permanent magnet synchronous generators i hana ʻia e General Electric Company o ʻAmelika Hui Pū ʻIa.ʻO ka mua loa o ka honua paʻa mau loa i hoʻomohala ʻia ma Kina he 3 kW 20 000 r/min mau mea hoʻomohala mau. 
Hoʻohana pū ʻia ka mīkini hoʻoheheʻe mau loa ma ke ʻano he mea hoʻohiwahiwa kōkua o ka mīkini hoʻoheheʻe mahu nui. I ka makahiki 1980, ua hoʻomohala maikaʻi koʻu ʻāina i ka 40 kVA~160 kVA rare earth permanent magnet auxiliary exciter me ka mana nui loa o ka honua i kēlā manawa. Hoʻonui nui i ka hilinaʻi o ka hana mana. I kēia manawa, hoʻolaha ʻia nā mea hoʻoheheʻe liʻiliʻi i hoʻokele ʻia e nā ʻenekini hoʻohuhi kūloko no nā kumu mana kūʻokoʻa, nā mea hoʻomohala mau no nā kaʻa, a me nā mea hoʻoheheʻe makani paʻa mau liʻiliʻi e hoʻokele pololei ʻia e nā huila makani. ʻO ke kuleana koʻikoʻi o nā mīkini magnet mau loa i nā kahua noi 1 Hoʻohana nui ʻia nā ʻenekini paʻa mau loa e mālama i ka ikehu no ka ʻai ʻana, e like me nā mīkini paʻa paʻa mau loa no ka ʻoihana textile a me nā ʻenehana fiber, ka ʻaila, ka mining, nā ʻenekini paʻa mau loa i loko o nā mīkini kaʻa kaʻa lanahu, ka honua mau loa. nā moto synchronous e hoʻokele i nā pāpaʻi like ʻole a me nā mea pā. 2 Hoʻohana ʻia nā ʻano kaʻa like ʻole o ka honua e nā ʻano kaʻa like ʻole (nā kaʻa, nā kaʻa kaʻa, nā kaʻaahi), a me nā kaʻa kaʻa mau loa ka honua.Wahi a nā helu helu, ma kahi o 70% o nā kaʻa kaʻa paʻa mau honua e hoʻohana ʻia i nā kaʻa.No nā kaʻa nani, ʻoi aku ma mua o 70 mau kaʻa kaʻa no nā noi like ʻole.No ka mea ʻokoʻa nā koi o nā kaʻa kaʻa like ʻole, ʻokoʻa ke koho ʻana i nā mea magnet mau loa.Hoʻohana ʻia nā mākēneki kaʻa i nā ea, nā pā, a me nā puka makani uila. Mai ka hiʻohiʻona o ke kumukūʻai, e hoʻomau ka maikaʻi o ka ferrite i ka wā e hiki mai ana.Ke hoʻohana mau nei nā coils ignition, drive, a me nā sensor i nā magnet sintered Sm-Co.Eia kekahi, ʻo nā ʻāpana kaʻa, akā ʻaʻole hiki ke mālama ʻia nā kaʻa uila, ma ke ʻano he ʻano kūlohelohe (EV) a me nā kaʻa uila hybrid (HEV). 3 Pūnaehana servo AC servo ʻaʻole honua He mīkini hoʻohui electromechanical me ka uila, hana kiʻekiʻe a me ka ʻōnaehana hoʻokele wikiwiki.ʻO ka ʻōnaehana he kino kaʻa kaʻa paʻa paʻa paʻa ponoʻī.Hoʻohana ʻia ka ʻōnaehana i ka hoʻomohala ʻana i nā mīkini mīkini CNC, ʻenehana hana maʻalahi; a ma nā kaʻa uila hoʻi, ma mua o nā kaʻa wela kahiko, no ke kūʻokoʻa o nā hoʻokuʻu kaʻa.He ʻoihana ʻenehana kiʻekiʻe e hoʻohiki nei i ka ʻenekini mau loa honua. 4 ʻO ke kahua hou ka mea nui no ke kākoʻo ʻana i ka mana haʻahaʻa haʻahaʻa honua paʻa mau magnet synchronous motor variable frequency speed control system no nā ea hou a me nā friji, nā hāmeʻa uila uila no nā ʻano like ʻole o ka honua paʻa mau DC micro motors, ka honua ʻaʻole i hoʻopaʻa ʻia. ʻO nā motika DC nā mea hana me ka mana like ʻole.ʻO ia mau kaʻa kaʻa i makemake nui ʻia. 5 ʻO nā mea hoʻoheheʻe mau loa me nā mea maikaʻi i nā noi aerospace e kūpono loa ia no nā noi aero-engine.ʻOiai aia kekahi mau hoʻohana ʻana i nā ʻenekini paʻa mau loa i ka lewa (e like me ka generator voltage a me ka pale pōkole pōkole, a me nā mea ʻē aʻe), ua ʻae ka poʻe loea ma ka home a me nā ʻāina ʻē he mea koʻikoʻi ka hoʻomohala ʻana i nā ʻenekini paʻa honua no kahi hanauna hou. o na aero-engines. kumu kūʻai
Ua hoʻohana nui ʻia nā kaʻa ʻo Ferrite permanent magnet, ʻoi aku ka miniature permanent magnet DC ma muli o ko lākou ʻano maʻalahi a me ke kaʻina hana, hoʻemi ʻia ka nui, a ʻoi aku ka haʻahaʻa o ke kumukūʻai ma mua o nā kaʻa uila.No ka mea, ʻoi aku ka nui o ke kumukūʻai o nā mīkini paʻa mau loa i kēia manawa, ʻoi aku ka kiʻekiʻe o ke kumu kūʻai o nā kaʻa kaʻa hoʻokalakupua uila, pono e uku ʻia e kāna hana kiʻekiʻe a me ka mālama kālā.
I kekahi mau manawa, e like me ka leo coil motors o ka computer disk drives, hoʻomaikaʻi ka hana o NdFeB permanent magnets, hoʻemi nui ʻia ka leo a me ka nui, a hoʻemi ʻia ke kumukūʻai.I ka hoʻolālā, pono e hoʻohālikelike i ka hana a me ke kumukūʻai e like me nā manawa hoʻohana kikoʻī a me nā koi e hoʻoholo ai i ke koho, akā e hana hou i ke kaʻina hana a me ka hoʻolālā hoʻolālā e hōʻemi i ke kumukūʻai.
Ka manawa hoʻouna: Iune-20-2022 
