'Lelo ka mea hana hana hana hana maʻamau iā ʻoe
ʻIke mākou ʻo ka inductance core kahi huahana e hoʻohana ʻia i nā huahana uila he nui, e hoʻopuka nā huahana uila i kekahi poho i ke kaʻina o ka hoʻohana ʻana, a ʻaʻole ʻokoʻa ka inductance core. Inā nui loa ka nalowale o ka inductor core, e hoʻopilikia ia i ke ola lawelawe o ka inductor core.
ʻO ka hiʻohiʻona o ka nalowale o ka inductor core (ka mea nui me ka hysteresis loss a me ka eddy current loss) ʻo ia kekahi o nā hōʻailona koʻikoʻi o nā mea mana, e pili ana a hoʻoholo i ka pono hana, piʻi ka wela a me ka hilinaʻi o ka mīkini holoʻokoʻa.
Inductor kumu poho
1. Nalo hysteresis
Ke hoʻohana ʻia ka mea kumu, aia ʻelua ʻāpana o ka ikehu i hoʻouna ʻia i ke kahua magnetic, hoʻololi ʻia kekahi i ka ikehu hiki, ʻo ia hoʻi, ke wehe ʻia ke au o ka magnetization waho, hiki ke hoʻihoʻi ʻia ka ikehu ma ke kaapuni. , a ʻo ka ʻāpana ʻē aʻe e hoʻopau ʻia e ka lanakila ʻana i ka friction, i kapa ʻia ʻo hysteresis loss.
ʻO ka ʻāpana o ka ʻāpana aka o ka pihi magnetization e hōʻike ana i ka nalowale o ka ikehu i hana ʻia e ka hysteresis i ke kaʻina hana magnetization o ke kumu magnetic i kahi pōʻai hana. ʻO nā ʻāpana e pili ana i ka wahi nalowale, ʻo ia ka ʻoi loa o ka hana magnetic flux density B, ke kiʻekiʻe kiʻekiʻe o ke kahua magnetic H, ka remanence Br a me ka ikaika coercive Hc, kahi e hilinaʻi ai ka mānoanoa magnetic a me ka ikaika o ke kahua magnetic i nā kūlana o waho a me ka nā ʻāpana nui kumu, ʻoiai ʻo Br a me Hc e hilinaʻi i nā waiwai waiwai. No kēlā me kēia manawa o ka magnetization o ka inductor core, pono e nalo i ka ikehu proportional i ka wahi i hoʻopuni ʻia e ka loop hysteresis. ʻoi aku ka kiʻekiʻe o ka alapine, ʻoi aku ka nui o ka mana pohō, ʻoi aku ka nui o ka kowali induction magnetic, ʻoi aku ka nui o ka pā, ʻoi aku ka nui o ka hysteresis poho.
2. Eddy poho i kēia manawa
Ke hoʻohui ʻia kahi puʻupuʻu AC i ka coil koʻikoʻi magnetic, e kahe ana ka mana o ka excitation i loko o ka coil, a ʻo ka flux magnetic a pau i hana ʻia e ka huli ʻana o ka ampere hauʻoli e hele i ke kumu magnetic. ʻO ke kumu magnetic ponoʻī he mea alakaʻi, a ua hoʻopili ʻia nā kahe magnetic āpau a puni ka ʻāpana keʻa o ke kumu magnetic e hana i kahi wili lua hoʻokahi. No ka mea, ʻaʻole i pau ʻole ka resistivity o ka mea magnetic core, aia kekahi kūʻē a puni ke kumu, a ʻo ka volta i hoʻoulu ʻia e hoʻopuka i kēia manawa, ʻo ia hoʻi, eddy current, e kahe ana i kēia kūʻē ʻana, e hōʻemi ana, ʻo ia hoʻi, eddy current loss.
3. Ke koena poho
Hoʻokumu ʻia ke koena koena e ka hopena hoʻomaha magnetization a i ʻole ka hopena hysteresis magnetic. ʻO ka mea i kapaʻia he hoʻomaha,ʻo ia hoʻi, ma ke kaʻina hana o ka magnetization a iʻole ka anti-magnetization,ʻaʻole e hoʻololi koke ka moku'āina magnetization i kona kūlana hope loa me ka hoʻololiʻana i ka ikaika o ka magnetization, akā makemake i kahi kaʻina hana, aʻo kēia "hopena manawa" ke kumu o ke koena poho. Aia ia ma ke alapine kiʻekiʻe 1MHz ma luna o kekahi poho hoʻomaha a milo i ka resonance magnetic a pēlā aku, i ka hāʻawi mana hoʻololi i nā haneli o KHz o ka uila uila, haʻahaʻa loa ka hapa o ke koena o ke koena, hiki ke nānā ʻole ʻia.
I ke koho ʻana i kahi kumu magnetic kūpono, pono e noʻonoʻo ʻia nā ʻāpana ʻokoʻa a me nā ʻano alapine, no ka mea, ʻo ka pihi e hoʻoholo i ka nalowale o ke alapine kiʻekiʻe, ka saturation curve a me ka inductance o ka inductor. No ka mea, ʻo ke au eddy ma kekahi ʻaoʻao e hoʻoemi i ke kūʻē kūʻē, hoʻomāhana i ka mea magnetic, a hoʻonui i ka manawa hoʻoulu, ma ka ʻaoʻao ʻē aʻe e hōʻemi i ka wahi hoʻokele magnetic kūpono o ka mea magnetic. No laila, e hoʻāʻo e koho i nā mea magnetic me ka resistivity kiʻekiʻe a i ʻole ma ke ʻano o ka ʻōwili ʻia e hōʻemi i ka nalowale o kēia manawa. No laila, kūpono ka mea platinum hou NPH-L no nā ʻāpana metala pauka haʻahaʻa haʻahaʻa o ke alapine kiʻekiʻe a me nā mea mana kiʻekiʻe.
Hoʻokumu ʻia ka poho kumu ma muli o ke kahua magnetic alterating i ka mea kumu. ʻO ka poho i hana ʻia e kekahi mea he hana ia o ke alapine hana a me ka holo ʻana o ka flux holoʻokoʻa, no laila e hōʻemi ana i ka nalowale conduction pono. ʻO ka poho kumu ma muli o ka hysteresis, eddy current a me ke koena o ka nalowale o ka mea kumu. No laila, ʻo ka poho kumu ka huina o ka poho hysteresis, eddy current loss and remanence loss. ʻO ka nalo ʻana o ka hysteresis ʻo ia ka nalowale o ka mana i hana ʻia e ka hysteresis, i kūlike me ka wahi i hoʻopuni ʻia e nā puka lou. Ke hoʻololi ʻia ke kahua mākēneki ma ke kumu nui, hiki ke ʻano eddy i ke kumu, a ʻo ka nalowale i loaʻa i ka eddy current ua kapa ʻia ʻo eddy current loss. ʻO ke koena poho, ʻo ia nā poho a pau koe wale nō ka poho hysteresis a me ka poho eddy current.
Makemake paha ʻoe
Heluhelu hou aku i nā nūhou
Hana kūikawā ana i loko o ka? Iecaianoaaiiie o acee? Iuo oeiia o kaʻeleʻele o ke komo lima inductors, lei inductors, vertical inductors, Tripod inductors, one inductors, ka hoaka o inductors, e like me ka pololei coils, kiʻekiʻe-alapine (frequency) transformers a me nāʻume mākenēki eiiiiiaiou.
Ka manawa kau: Apr-21-2022