nkhani

Mphete zambiri za maginito zimafunika kupakidwa utoto kuti zithandizire kusiyanitsa. Nthawi zambiri, chitsulo cha ufa chimasiyanitsidwa ndi mitundu iwiri. Zomwe zimagwiritsidwa ntchito kwambiri ndizofiira / zowonekera, zachikasu / zofiira, zobiriwira / zofiira, zobiriwira / zabuluu ndi zachikasu / zoyera. Mphete yapakati ya manganese nthawi zambiri imakhala Yopaka utoto wobiriwira, chitsulo-silicon-aluminium nthawi zambiri imakhala yakuda ndi zina zotero. M'malo mwake, mtundu wa mphete ya maginito pambuyo powombera ulibe chochita ndi utoto wa utoto wopopera pambuyo pake, ndi mgwirizano chabe mumakampani. Mwachitsanzo, wobiriwira akuimira mkulu permeability maginito mphete; mitundu iwiri ikuyimira chitsulo ufa pachimake maginito mphete; wakuda amaimira chitsulo-silicon-aluminium maginito mphete, etc.
(1) Mphete yamphamvu yamaginito
Magnetic mphete inductors, tiyenera kunena nickel-zinc ferrite maginito mphete. Mphete ya maginito imagawidwa kukhala nickel-zinc ndi manganese-zinc malinga ndi zinthu. The maginito permeability wa faifi tambala-zinki ferrite maginito mphete zipangizo panopa ntchito kuyambira 15-2000. Zomwe zimagwiritsidwa ntchito kwambiri ndi faifi tambala-zinki ferrite ndi maginito permeability 100- Pakati pa 1000, malinga ndi gulu maginito permeability, amagawidwa otsika maginito permeability zipangizo. Kuthekera kwa maginito kwa manganese-zinc ferrite maginito maginito nthawi zambiri kumakhala pamwamba pa 1000, kotero mphete ya maginito yopangidwa ndi manganese-zinc chuma imatchedwa kuti maginito apamwamba kwambiri.
Mphete zamaginito za Nickel-zinc ferrite nthawi zambiri zimagwiritsidwa ntchito pamawaya osiyanasiyana, ma board ozungulira, komanso anti-kusokoneza zida zamakompyuta. Manganese-zinc ferrite maginito mphete angagwiritsidwe ntchito kupanga inductors, thiransifoma, zosefera cores, maginito mitu ndi mlongoti ndodo. Ambiri, m'munsi permeability zakuthupi, ndi otakata osiyanasiyana oyenera pafupipafupi; kukwezeka kwa zinthu kumapangitsa kuti mafupipafupi azitha kuchepetsedwa.
(2) Mphete yachitsulo

Iron powder core ndi mawu odziwika bwino a maginito ferric oxide, omwe amagwiritsidwa ntchito makamaka pamabwalo amagetsi kuti athetse mavuto a electromagnetic compatibility (EMC). Pakugwiritsa ntchito, zinthu zina zosiyanasiyana zidzawonjezedwa molingana ndi zofunikira zosefera m'magulu osiyanasiyana.
Ma cores oyambilira a maginito anali "omangirizidwa" zitsulo zofewa za maginito zopangidwa ndi chitsulo-silicon-aluminium alloy maginito ufa. Chitsulo chachitsulo-silicon-aluminium maginito cha ufa nthawi zambiri chimatchedwa "chitsulo cha ufa wachitsulo". Kukonzekera kwake komwe kumapangidwira ndi: gwiritsani ntchito Fe-Si-Al alloy maginito ufa kuti aphwanyidwe ndi mphero ya mpira ndi yokutidwa ndi insulating wosanjikiza ndi njira mankhwala, ndiye kuwonjezera za 15wt% binder, kusakaniza wogawana, ndiye nkhungu ndi kulimba, ndiyeno kutentha mankhwala. (kuchepetsa nkhawa) kupanga zinthu. "Iron powder core" yachikhalidwe ichi imagwira ntchito pa 20kHz∼200kHz. Chifukwa ali ndi machulukitsidwe apamwamba kwambiri a maginito othamanga kuposa ma ferrite omwe amagwira ntchito mu bandi yafupipafupi, mawonekedwe abwino a DC, pafupi ndi zero magnetostriction coefficient, palibe phokoso panthawi yogwira ntchito, kukhazikika kwafupipafupi, komanso chiŵerengero chapamwamba chamtengo wapatali. Amagwiritsidwa ntchito kwambiri pazigawo zamagetsi monga ma transfoma amagetsi apamwamba kwambiri. Zoyipa zawo ndikuti kudzaza kopanda maginito sikumangotulutsa maginito, komanso kumapangitsa kuti njira ya maginito isapitirire, ndipo demagnetization yakomweko imabweretsa kuchepa kwa maginito.
Chitsulo chachitsulo chomwe chapangidwa posachedwapa ndi chosiyana ndi chikhalidwe chachitsulo-silicon-aluminium magnetic powder core. Zopangira zomwe zimagwiritsidwa ntchito si aloyi maginito ufa koma chitsulo choyera chachitsulo chokutidwa ndi chosanjikiza. Kuchuluka kwa binder ndi kochepa kwambiri, kotero kuti mphamvu ya maginito yothamanga ndi yaikulu. kukula kwakukulu. Amagwira ntchito pakati pa otsika pafupipafupi gulu pansi pa 5kHz, nthawi zambiri mazana ochepa Hz, omwe ndi otsika kwambiri kuposa ma frequency a FeSiAl maginito a ufa. Msika womwe mukufuna ndikusintha ma sheet achitsulo a silicon pama motors ndi kutayika kwake kochepa, kuchita bwino kwambiri komanso kuphweka kwa mapangidwe a 3D.
Magnetic Ring Inductor
(3) FeSiAl maginito mphete
FeSiAl maginito mphete ndi imodzi mwa mphete za maginito zomwe zimagwiritsidwa ntchito kwambiri. M'mawu osavuta, FeSiAl imapangidwa ndi aluminiyamu-silicon-iron ndipo ili ndi Bmax yokwera kwambiri (Bmax ndiye pafupifupi Z pamlingo wapakati pagawo la magnetic core. Magnetic flux density.) zotsika kwambiri kuposa chitsulo ufa pachimake ndi mkulu maginito flux, ali otsika magnetostriction (otsika phokoso), ndi otsika mtengo mphamvu yosungirako zinthu, palibe ukalamba matenthedwe, angagwiritsidwe ntchito m'malo chitsulo ufa Pachimake ndi khola kwambiri pa kutentha kwambiri.
Zinthu zazikulu za FeSiAlZ ndizochepa kutayika kuposa zitsulo za ufa wachitsulo komanso zabwino za DC zomwe zili pano. Mtengo si wapamwamba kwambiri, koma osati wotsika kwambiri, poyerekeza ndi chitsulo cha ufa wachitsulo ndi chitsulo faifi tambala molybdenum.
Pakatikati pachitsulo-silicon-aluminium maginito maginito ali ndi maginito abwino kwambiri komanso maginito, kutayika kwa mphamvu zochepa komanso kuchulukira kwakukulu kwa maginito. Ikagwiritsidwa ntchito pa kutentha kwa -55C ~ + 125C, imakhala yodalirika kwambiri monga kukana kutentha, kukana chinyezi ndi kugwedezeka kwamphamvu;
Pa nthawi yomweyo, permeability osiyanasiyana 60 ~ 160 zilipo. Ndilo chisankho chabwino kwambiri chosinthira magetsi otulutsa koyilo, PFC inductor ndi resonant inductor, yogwira ntchito yokwera mtengo.