Nā mea hoʻokomo i ke ʻano maʻamau, hoʻohana pinepine ʻia i nā lako mana hoʻololi kamepiula e kānana i nā hōʻailona hoʻopilikia electromagnetic mode maʻamau. I ka hoʻolālā papa, hoʻokani pū ka mea hoʻokele mode maʻamau i ka kānana EMI, i hoʻohana ʻia e kāohi i ka radiation waho a me ka hoʻokuʻu ʻana o nā hawewe electromagnetic i hana ʻia e nā laina hōʻailona kiʻekiʻe.
Ma ke ʻano he mea nui o nā ʻāpana magnetic, hoʻohana nui ʻia nā inductors i nā kaʻa uila uila. He ʻāpana koʻikoʻi loa ia i nā kaapuni mana. E like me ka electromagnetic relays i loko o nā ʻenehana hoʻokele ʻenehana a me nā mika mana uila (watt-hour mika) i nā ʻōnaehana mana. ʻO nā kānana ma ka hoʻokomo a me nā hopena o ka hoʻololi ʻana i nā lako lako mana, nā tuners i ka TV e loaʻa a hoʻouna i nā hopena, etc. ʻO nā hana nui o nā inductors i nā uila uila: ka mālama ʻana i ka ikehu, kānana, choke, resonance, a me nā mea ʻē aʻe.
Ma muli o ka ʻokoʻa o ka mana inductor mai ka liʻiliʻi liʻiliʻi liʻiliʻi inductor, ʻokoʻa ka topology o ka mana hoʻololi i ka wā o ka hoʻolālā ʻana, a ʻo ke ʻano hoʻolālā hoʻi he mau koi ponoʻī, e hoʻopilikia ai i ka hoʻolālā.Nā mea hoʻokomoi kēia manawa, hoʻohana nui ʻia nā ʻāpana uila no ka kānana ʻana, ka mālama ʻana i ka ikehu, ka hoʻololi ʻana i ka ikehu, a me ka hoʻoponopono ʻana i ka mana. Ua uhi ʻia ka hoʻolālā Inductor i nā ʻano he nui o ka ʻike e like me ka manaʻo electromagnetic, nā mea magnetic, a me nā lula palekana. Pono nā mea hoʻolālā e ʻike maopopo i nā kūlana hana a me nā koi pili pili (e like me ka manawa, ka volta, ka pinepine, ka piʻi ʻana o ka mahana, nā waiwai waiwai, a me nā mea ʻē aʻe) e hoʻoholo ai. ʻO ka hoʻolālā kūpono loa.
Hoʻokaʻawale i nā inductors:
Hiki ke hoʻokaʻawale ʻia nā Inductors i nā ʻano like ʻole e pili ana i kā lākou noiʻi noiʻi, ka hoʻolālā huahana, ke ʻano, ka hoʻohana ʻana, etc. ʻO ka maʻamau, hoʻomaka ka hoʻolālā inductor me ka hoʻohana ʻana a me ke kaiapuni noi e like me ka hoʻomaka. I ka hoʻololi ʻana i nā lako mana, hiki ke hoʻokaʻawale ʻia nā inductors i:
ʻŌnaehana ʻano maʻamau
Hoʻoponopono Mana Mana – PFC Choke
ʻO ka mea hoʻokomo i hoʻohui ʻia i hoʻopaʻa ʻia (Coupler Choke)
Mea hoʻoheheʻe ʻana i ka ikehu (Smooth Choke)
Koil hoʻonui mākēneki (MAG AMP Coil)
Pono nā inductors kānana maʻamau i nā coils ʻelua i ka waiwai inductance like, ka impedance like, a me nā mea ʻē aʻe, no laila e hoʻohana kēia ʻano inductors i nā hoʻolālā symmetrical, a ʻo kā lākou mau ʻano he TOROID, UU, ET a me nā ʻano ʻē aʻe.
Pehea e hana ai nā inductors maʻamau:
Kāhea ʻia ka mea hoʻoheheʻe kānana maʻamau maʻamau (ma hope aku i kapa ʻia ʻo ka mea hoʻohuihui mode maʻamau a i ʻole CM.M.Choke) a i ʻole Line Filter.
Pono nā inductors kānana maʻamau i nā coils ʻelua i ka waiwai inductance like, ka impedance like, a me nā mea ʻē aʻe, no laila e hoʻohana kēia ʻano inductors i nā hoʻolālā symmetrical, a ʻo kā lākou mau ʻano he TOROID, UU, ET a me nā ʻano ʻē aʻe.
Pehea e hana ai nā inductors maʻamau:
Kāhea ʻia ka mea hoʻoheheʻe kānana maʻamau maʻamau (ma hope aku i kapa ʻia ʻo ka mea hoʻohuihui mode maʻamau a i ʻole CM.M.Choke) a i ʻole Line Filter.
I kahoʻololi mana lako, ma muli o ka hoʻololi wikiwiki ʻana i ka manawa a i ʻole ka volta i loko o ka diode rectifier, kānana capacitor a inductor, hoʻokumu ʻia nā kumu hoʻopilikia electromagnetic (noise). I ka manawa like, aia kekahi mau leo harmonic kiʻekiʻe ma mua o ke alapine mana o ka mana hoʻokomo. Inā ʻaʻole hoʻopau ʻia kēia mau pilikia, e hoʻopōʻino ka hoʻopau ʻana i nā lako ukana a i ʻole ka lako mana hoʻololi. No laila, ua hoʻopuka nā ʻoihana hoʻoponopono palekana i kekahi mau ʻāina i nā lula e pili ana i ka hoʻokuʻu ʻana i ka electromagnetic interference (EMI).
nā hoʻoponopono mana kūpono. I kēia manawa, piʻi nui ka nui o ka hoʻololi ʻana i nā lako mana, a ke ulu nui nei ka EMI. No laila, pono e hoʻokomo ʻia nā kānana EMI i ka hoʻololi ʻana i nā lako mana. Pono nā kānana EMI e kāohi i ke ʻano maʻamau a me ka walaʻau maʻamau e hoʻokō i kekahi mau koi. maʻamau. ʻO ke kānana mode maʻamau ke kuleana no ka kānana ʻana i ka hōʻailona hoʻopilikia ʻano ʻokoʻa ma waena o nā laina ʻelua ma ka hopena hoʻokomo a i ʻole ka hopena hoʻopuka, a ʻo ke kānana mode maʻamau ke kuleana no ka kānana ʻana i ka hōʻailona hoʻopilikia maʻamau ma waena o nā laina hoʻokomo ʻelua. Hiki ke hoʻokaʻawale ʻia nā inductors mode maʻamau i ʻekolu ʻano: AC CM.M.CHOKE; DC CM.M.CHOKE a me SIGNAL CM.M.CHOKE ma muli o nā wahi hana like ʻole. Pono lākou e hoʻokaʻawale i ka wā e hoʻolālā ai a koho paha. Akā ʻo kāna loina hana ua like nō ia, e like me ka mea i hōʻike ʻia ma ka Figure (1):
E like me ka mea i hōʻike ʻia ma ke kiʻi, ʻelua pūʻulu coils me nā ʻaoʻao ʻē aʻe i ʻeha ma ke apo magnetic hoʻokahi. E like me ke kānāwai paipu spiral lima ʻākau, ke hoʻohana ʻia kahi ʻano uila ʻokoʻa me ka polarity kūʻē a me ka amplitude hōʻailona like i nā pahu hoʻokomo A a me B, I ka wā , aia kahi i2 o kēia manawa i hōʻike ʻia ma ka laina paʻa, a me kahi kahe mana. ʻO Φ2 i hōʻike ʻia ma ka laina paʻa i hana ʻia i loko o ke kumu magnetic. I ka lōʻihi o ka hoʻohālikelike ʻana o nā wiliwili ʻelua, e hoʻopau nā ʻāwili magnetic ma nā ʻaoʻao ʻelua i ka core magnetic e hoʻopau kekahi i kekahi. ʻO ka huina magnetic flux ʻaʻole ia, ʻo ka inductance coil ua aneane ʻole, a ʻaʻohe hopena impedance ma ka hōʻailona mode maʻamau. Inā hoʻohana ʻia kahi hōʻailona mode maʻamau me ka polarity like a me ka amplitude like i nā pahu hoʻokomo A a me B, e loaʻa kahi i1 o kēia manawa i hōʻike ʻia e ka laina kiko, a e hana ʻia kahi flux Φ1 i hōʻike ʻia e ka laina kiko. ʻo ke kumu, a laila, e like ka ʻaoʻao a me ka hoʻoikaika ʻana i kekahi i kekahi, a ʻo ka waiwai inductance o kēlā me kēia coil he palua ko ka wā e noho wale ai, a me XL =ωL. No laila, ʻo ka coil o kēia ʻano wili i ka hopena hoʻopau ikaika i ka hoʻopili ʻana i ke ʻano maʻamau.
Hoʻokumu ʻia ka kānana EMI maoli me L a me C. I ka hoʻolālā ʻana, hoʻohui pinepine ʻia ke ʻano ʻokoʻa a me nā kaʻa kaʻa hoʻopau ʻano maʻamau (e like me ka hōʻike ʻana ma ke Kiʻi 2). No laila, pono e hoʻokumu ʻia ka hoʻolālā i ka nui o ka capacitor kānana a me nā lula palekana e pono ai. Hoʻoholo nā maʻamau i nā waiwai inductor.
Ma ke kiʻi, L1, L2, a me C1 e hana i kahi kānana mode maʻamau, a ʻo L3, C2, a me C3 e hana i kahi kānana mode maʻamau.
Hoʻolālā o ka Inductor Mode maʻamau
Ma mua o ka hoʻolālā ʻana i kahi inductor mode maʻamau, e nānā mua i ka pono o ka coil e hoʻokō i kēia mau loina:
1 > Ma lalo o nā kūlana hana maʻamau, ʻaʻole e hoʻopiha ʻia ke kumu magnetic ma muli o ka mana o kēia manawa.
2 > Pono e loaʻa i kahi impedance nui no nā hōʻailona hoʻopilikia kiʻekiʻe, kahi bandwidth, a me kahi impedance liʻiliʻi no ka hōʻailona o kēia manawa ma ke alapine hana.
3 > Pono e liʻiliʻi ka coefficient mahana o ka inductor, a he liʻiliʻi ka capacitance puʻunaue.
4> ʻO ke kū'ē DC e like me ka liʻiliʻi.
5> Pono e like me ka nui o ka inductance induction, a pono e paʻa ka waiwai inductance.
6 > Pono ka insulation ma waena o nā wiliwili e hoʻokō i nā koi palekana.
Nā ʻanuʻu hoʻolālā inductor mode maʻamau:
'anuʻu 0 SPEC loaʻa: EMI ʻae ʻia ka pae, kahi noi.
'anuʻu 1 E hoʻoholo i ka waiwai inductance.
'anuʻu 2 Hoʻoholo ʻia ka mea kumu a me nā kikoʻī.
'anuʻu 3 E hoʻoholo i ka helu o nā huli wili a me ke anawaena uea.
KaʻAnuʻu 4 E hōʻoiaʻiʻo
KaʻAnuʻu 5 E hoʻāʻo
Nā laʻana hoʻolālā
KaʻAnuʻu 0: kaapuni kānana EMI e like me ka hōʻike ʻana ma ke Kiʻi 3
CX = 1.0 Uf Cy = 3300PF EMI pae: Fcc Papa B
ʻAno: Ac Common Mode Choke
KaʻAnuʻu Hana 1: E hoʻoholo i ka inductance (L):
Hiki ke ʻike ʻia mai ke kiʻikuhi kaapuni i kaohi ʻia ka hōʻailona mode maʻamau e ka kānana mode maʻamau i haku ʻia me L3, C2, a me C3. ʻO ka ʻoiaʻiʻo, L3, C2, a me C3 hana ʻelua mau kaʻa kaʻa kaʻa LC, e komo i ka walaʻau o nā laina L a me N. E like me ka lōʻihi o ka ʻoki ʻia ʻana o ke kaapuni kānana a ʻike ʻia ka capacitance C, hiki ke loaʻa i ka inductance L e kēia ʻano.
fo= 1/(2π√LC)L → 1/(2πfo)2C
ʻO ka maʻamau ka bandwidth hōʻike EMI penei:
Hoʻopili ʻia: 150KHZ → 30MHZ (E hoʻomaopopo: VDE maʻamau 10KHZ - 30M)
ʻO ka hoʻopaʻapaʻa ʻana: 30MHZ 1GHZ
ʻAʻole hiki i ka kānana maoli ke hoʻokō i ka pihi impedance kiʻekiʻe o ka kānana kūpono, a hiki ke hoʻonohonoho pinepine ʻia ke alapine cutoff ma kahi o 50KHZ. Eia, manaʻo ʻia fo = 50KHZ, a laila
L =1/(2πfo)2C = 1/ [( 2*3.14*50000)2 *3300*10-12] = 3.07mH
Hoʻokumu ʻo L1, L2, a me C1 i kānana mode maʻamau (low-pass). ʻO ka capacitance ma waena o nā laina he 1.0uF, no laila ʻo ka inductance mode maʻamau:
L = 1/ [( 2*3.14*50000)2 *1*10-6] = 10.14uH
Ma kēia ala, hiki ke loaʻa ka waiwai inductance i koi ʻia. Inā makemake ʻoe e kiʻi i kahi alapine ʻoki ʻoki haʻahaʻa, hiki iā ʻoe ke hoʻonui i ka waiwai inductance. ʻAʻole i emi iho ka alapine o ka ʻoki ʻia ma lalo o 10KHZ. ʻO ka manaʻo, ʻoi aku ka kiʻekiʻe o ka inductance, ʻoi aku ka maikaʻi o ka hopena suppression EMI, akā ʻoi aku ka nui o ka inductance kiʻekiʻe e hoʻohaʻahaʻa i ke alapine cutoff, a hiki i ka kānana maoli ke hoʻokō i kahi broadband, kahi e hōʻino ai ka hopena suppression o ka leo kiʻekiʻe (maʻamau. ʻO ka leo leo o ka mana hoʻololi e pili ana iā 5 ~ 10MHZ, akā aia kekahi mau hihia ma mua o 10MHZ). Eia kekahi, ʻoi aku ka kiʻekiʻe o ka inductance, ʻoi aku ka nui o ka huli ʻana o ka wili, a i ʻole ke kiʻekiʻe o ka ui o ka CORE, e hoʻonui ai i ka impedance haʻahaʻa haʻahaʻa (ʻoi aku ka nui o ka DCR). Ke piʻi aʻe ka helu o nā huli, piʻi pū ka capacitance puʻunaue (e like me ka mea i hōʻike ʻia ma ke Kiʻi 4), e ʻae ana i nā au āpau kiʻekiʻe e kahe ma o kēia capacitance. ʻO ka UI kiʻekiʻe kiʻekiʻe e hoʻopiha maʻalahi iā CORE, a paʻakikī a paʻakikī hoʻi e hana.
KaʻAnuʻu 2 E hoʻoholo i ka mea CORE a me ka SIZE
Mai nā koi hoʻolālā i luna, hiki iā mākou ke ʻike he mea paʻakikī ke ʻano o ka inductor mode maʻamau i ka saturate, no laila pono e koho i kahi mea me kahi haʻahaʻa BH angle ratio. No ka mea, he kiʻekiʻe ka inductance waiwai, pono e kiʻekiʻe ka ui waiwai o ka magnetic core, a pono pū me ia Me ka poho kumu haʻahaʻa a me ka waiwai Bs kiʻekiʻe, ʻo Mn-Zn ferrite material CORE i kēia manawa ka mea CORE kūpono loa e hālāwai me ka luna koi.
ʻAʻohe hoʻoponopono i ka COEE SIZE i ka wā hoʻolālā. Ma ke kumu, pono wale ia e hoʻokō i ka inductance i koi ʻia a hoʻemi i ka nui o ka huahana i hoʻolālā ʻia i loko o ka palena haʻahaʻa haʻahaʻa i ʻae ʻia.
No laila, pono ke nānā 'ia nā mea CORE a me ka SIZE ma muli o ke kumu kū'ai, ka pohō i 'ae 'ia, ka wahi ho'okomo, a me nā mea'ē a'e. 'O ka waiwai CORE ma'amau o nā inductors mode ma'amau ma waena o 2000 a me 10000. He ha'aha'a ka hao hao, Bs ki'eki'e a me ka ha'aha'a. ʻO ka lakio kihi BH, akā haʻahaʻa kona ui, no laila ʻaʻole hoʻohana ʻia i nā inductors mode maʻamau, akā ʻo kēia ʻano kumu kekahi o nā inductors mode maʻamau. Nā mea i makemake ʻia.
'anuʻu 3 E hoʻoholo i ka helu o nā huli N a me ke anawaena uwea dw
E hoʻoholo mua i nā kikoʻī o ka CORE. No ka laʻana, ma kēia laʻana, T18*10*7, A10, AL = 8230±30%, a laila:
N = √L / AL = √(3.07*106 ) / (8230*70%) = 23 TS
Hoʻokumu ʻia ke anawaena uea i ka nui o kēia manawa o 3 ~ 5A/mm2. Inā ʻae ka lewa, hiki ke koho ʻia ka nui o kēia manawa ma kahi haʻahaʻa. E noʻonoʻo ʻoe i ka manawa hoʻokomo I i = 1.2A i kēia laʻana, e lawe iā J = 4 A/mm2
A laila Aw = 1.2 / 4 = 0.3 mm2 Φ0.70 mm
Pono e hoʻāʻo ʻia ka inductor mode maʻamau ma o nā laʻana maoli e hōʻoia i ka hilinaʻi o ka hoʻolālā, no ka mea, ʻo nā ʻokoʻa i nā kaʻina hana e alakaʻi pū ai i nā ʻokoʻa i nā ʻāpana inductor a pili i ka hopena kānana. No ka laʻana, ʻo ka hoʻonui ʻana i ka puʻupuʻu puʻupuʻu e hana i ka walaʻau kiʻekiʻe. ʻOi aku ka maʻalahi o ka hoʻouna ʻana. ʻO ka asymmetry o nā makani ʻelua e hoʻonui i ka inductance ma waena o nā pūʻulu ʻelua, e hana ana i kahi impedance i ka hōʻailona mode maʻamau.
Hōʻuluʻulu
1 > ʻO ka hana o ka inductor mode maʻamau e kānana i ka walaʻau maʻamau i ka laina. Pono ka hoʻolālā e loaʻa i nā wiliwili ʻelua kahi hoʻolālā symmetrical a me nā ʻāpana uila like.
2 > He hopena maikaʻi ʻole ka capacitance puʻupuʻu o ka inductor mode maʻamau i ke kāohi ʻana i ka walaʻau kiʻekiʻe a pono e hōʻemi ʻia.
3 > ʻO ka waiwai inductance o ka inductor mode maʻamau e pili ana i ka leo alapine e pono ai ke kānana a me ka capacitance kūpono. ʻO ka nui o ka inductance ma waena o 2mH ~ 50 mH.
Kumu ʻatikala: Paʻi hou ʻia mai ka Pūnaewele
Ua hoʻokumu ʻia ʻo Xuange ma 2009. ʻO kanā mea hoʻololi alapine kiʻekiʻe a haʻahaʻa, inductors a meNā lako mana hoʻokele LEDhoʻohana nui ʻia i nā lako mana o nā mea kūʻai aku, nā lako mana ʻenehana, nā lako mana ikehu hou, nā lako mana LED a me nā ʻoihana ʻē aʻe.
He kaulana maikaʻi ʻo Xuange Electronics ma nā mākeke kūloko a me nā ʻāina ʻē, a ʻae mākouNā kauoha OEM a me ODM.Inā ʻoe e koho i kahi huahana maʻamau mai kā mākou papa inoa a ʻimi paha i ke kōkua me ka hana maʻamau, e ʻoluʻolu e kūkākūkā i kāu mau pono kūʻai me Xuange.
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