ʻO ka haʻalulu a me ka walaʻau o ka mīkini magnet mau |

Haʻawina e pili ana i ka mana o Stator Electromagnetic Force

ʻO ka walaʻau electromagnetic o ka stator i loko o ke kaʻa e pili nui ʻia e nā mea ʻelua, ʻo ka electromagnetic excitation force a me ka pane ʻana a me ka radiation acoustic i hoʻokumu ʻia e ka ikaika excitation pili. He loiloi o ka noiʻi.

Ua hoʻohana ʻo Polofesa ZQZhu mai ke Kulanui o Sheffield, UK, a me nā mea ʻē aʻe i ke ʻano analytical e aʻo i ka ikaika electromagnetic a me ka walaʻau o ka stator motor magnet paʻa, ka haʻawina theoretical o ka ikaika electromagnetic o ka mīkini paʻa paʻa brushless, a me ka haʻalulu o ka mau loa. magnet brushless DC motor me 10 pole a me 9 kau. Ua aʻo ʻia ka walaʻau, ua aʻo ʻia ka pilina ma waena o ka ikaika electromagnetic a me ka laula niho stator, a ʻike ʻia ka pilina ma waena o ka torque ripple a me nā hopena optimization o ka vibration a me ka walaʻau.

Ua hāʻawi ʻo Polofesa Tang Renyuan lāua ʻo Song Zhihuan mai Shenyang University of Technology i kahi ʻano analytical piha e aʻo ai i ka mana electromagnetic a me kāna mau harmonics i loko o ke kaʻa magnet paʻa, i hāʻawi i ke kākoʻo theoretical no ka noiʻi hou ʻana i ka manaʻo leo o ka mīkini magnet mau loa.Hoʻopili ʻia ke kumu leo haʻalulu electromagnetic a puni ka mīkini paʻa paʻa paʻa i hoʻohana ʻia e ka hawewe sine a me ka mea hoʻololi pinepine, ke ʻano o ke alapine o ka ea ea magnetic field, ka ikaika electromagnetic maʻamau a me ka leo haʻalulu i aʻo ʻia, a me ke kumu o ka torque. kālailai ʻia ka ripple. Ua hoʻohālikelike ʻia a hōʻoia ʻia ka torque pulsation me ka hoʻohana ʻana i ka Element, a ʻo ka torque pulsation ma lalo o nā kūlana kūpono slot-pole like ʻole, a me nā hopena o ka lōʻihi o ka ea, pole arc coefficient, chamfered angle, a me ka laulā slot ma ka torque pulsation. .

ʻO ka electromagnetic radial force a me tangential force model, a me ka simulation modal e like me ka hoʻokō ʻia, ʻike ʻia ka mana electromagnetic a me ka pane leo haʻalulu i ka domain frequency a nānā ʻia ke kumu hoʻohālike acoustic radiation, a ua lawe ʻia ka simulation like a me ka noiʻi hoʻokolohua. Hōʻike ʻia nā ʻano kumu nui o ka stator motor magnet paʻa i hōʻike ʻia ma ke kiʻi.

Kiʻi

ʻO ke ʻano nui o ka mīkini magnet mau loa

ʻenehana hoʻolālā kino kaʻa

ʻO ke kahe nui o ka magnetic i loko o ke kaʻa e komo i ka ea ākea me ka radial, a hoʻoulu i nā mana radial ma ka stator a me ka rotor, e hoʻoulu ai i ka haʻalulu electromagnetic a me ka walaʻau.I ka manawa like, hana ia i ka manawa tangential a me ka ikaika axial, e hoʻoulu ai i ka haʻalulu tangential a me ka haʻalulu axial.I nā manawa he nui, e like me nā motika asymmetric a i ʻole nā motors hoʻokahi-phase, ʻoi aku ka nui o ka haʻalulu tangential i hana ʻia, a maʻalahi ke kumu o ka resonance o nā ʻāpana i pili i ke kaʻa, ka hopena i ka leo radiated.I mea e helu ai i ka walaʻau electromagnetic, a me ka nānā ʻana a me ka mālama ʻana i kēia mau leo, pono e ʻike i ko lākou kumu, ʻo ia ka nalu ikaika e hoʻohua ai i ka haʻalulu a me ka walaʻau.No kēia kumu, lawe ʻia ka loiloi o nā hawewe ikaika electromagnetic ma o ka nānā ʻana o ke kahua magnetic air-gap.

Ke manaʻo nei ʻo ka hawewe mānoanoa hoʻoheheʻe magnetic i hana ʻia e ka stator ʻo , a ʻo ka hawewe hoʻopaʻapaʻa makeke Kiʻi

hana ʻia e ka rotor he Kiʻi

, a laila hiki ke hōʻike ʻia ko lākou ʻano hawewe hoʻopaʻapaʻa maʻemaʻe ma ke ākea ea penei:

ʻO nā mea e like me ka stator a me ka rotor slotting, ka hāliʻi ʻana, ka hoʻopili ʻana i ka nalu o kēia manawa, ka lele ʻana o ka ea-gap permeance fluctuation, rotor eccentricity, a me ka like ʻole ke alakaʻi i ka deformation mechanical a laila haʻalulu. ʻO ka harmonics space, time harmonics, slot harmonics, eccentricity harmonics a me ka saturation magnetic o ka magnetomotive force a pau e hoʻoulu i nā harmonics kiʻekiʻe o ka ikaika a me ka torque. ʻOi aku ka nui o ka nalu ikaika radial i ka kaʻa AC, e hana ia ma ka stator a me ka rotor o ke kaʻa i ka manawa like a hana i ka distortion circuit circuit.

ʻO ka stator-frame a me ka rotor-casing structure ke kumu nui o ka radiation no ka walaʻau kaʻa.Inā kokoke a i like paha ka ikaika radial i ka alapine maoli o ka ʻōnaehana stator-base, e kū mai ana ka resonance, e hoʻoneʻe ai i ka ʻōnaehana stator kaʻa a hoʻoulu i ka haʻalulu a me ka leo kani.

I ka nui o na hihia, Kiʻi

ka leo magnetostrictive i hoʻokumu ʻia e ka haʻahaʻa haʻahaʻa 2f, kiʻekiʻe-order radial ikaika ʻaʻole i ʻike ʻia (f ʻo ke alapine kumu o ka kaʻa, p ka helu o nā pole kaʻa). Eia nō naʻe, hiki i ka ikaika radial i hoʻokomo ʻia e ka magnetostriction ke hiki i kahi o 50% o ka ikaika radial i hoʻokomo ʻia e ka mokulele-gap magnetic field.

No ke kaʻa i alakaʻi ʻia e ka mea hoʻohuli, ma muli o ka noho ʻana o nā harmonics manawa kiʻekiʻe i kēia manawa o kāna mau stator windings, ʻo ka manawa harmonics e hoʻohua hou i ka torque pulsating, ʻoi aku ka nui ma mua o ka torque pulsating i hana ʻia e nā harmonics space. nui.Eia kekahi, hoʻouna ʻia ka ripple voltage i hana ʻia e ka rectifier unit i ka inverter ma o ke kaapuni waena, e loaʻa ana i kahi ʻano o ka torque pulsating.

E pili ana i ka leo electromagnetic o ka motor synchronous motor mau loa, ʻo ka ikaika Maxwell a me ka ikaika magnetostrictive nā kumu nui e hoʻoulu ai i ka uila a me ka walaʻau.

Nā hiʻohiʻona vibration stator kaʻa

ʻAʻole pili wale ka walaʻau electromagnetic o ke kaʻa i ke alapine, kauoha a me ka amplitude o ka hawewe ikaika electromagnetic i hoʻokumu ʻia e ka ea ea magnetic field, akā pili pū kekahi i ke ʻano kūlohelohe o ka ʻōnaehana kaʻa.Hoʻokumu nui ʻia ka walaʻau electromagnetic e ka vibration o ka stator motor a me ka casing.No laila, ʻo ka wānana ʻana i ke alapine maoli o ka stator ma o nā kumu aʻoaʻo a i ʻole ka hoʻohālikelike ʻana ma mua, a me ka hoʻohālikelike ʻana i ke alapine electromagnetic ikaika a me ke alapine maoli o ka stator, he ala kūpono ia e hōʻemi ai i ka walaʻau electromagnetic.

Ke like a kokoke paha ka alapine o ka nalu ikaika radial o ke kaʻa me ke alapine maoli o kekahi kauoha o ka stator, e hoʻokumu ʻia ka resonance.I kēia manawa, ʻoiai ʻaʻole nui ka amplitude o ka hawewe radial ikaika, e hoʻoulu ʻia ka haʻalulu nui o ka stator, a laila e hoʻohua ai i kahi leo electromagnetic nui.No ka walaʻau kaʻa, ʻo ka mea nui loa ke aʻo ʻana i nā ʻano kūlohelohe me ka vibration radial e like me ka mea nui, ʻo ke kauoha axial he zero, a ʻo ke ʻano o ke ʻano spatial ma lalo o ka papa ʻeono, e like me ka mea i hōʻike ʻia ma ke kiʻi.

Kiʻi

ʻAno haʻalulu stator

I ka nānā ʻana i nā hiʻohiʻona vibration o ke kaʻa, ma muli o ka palena palena o ka damping i ke ʻano mode a me ka pinepine o ka stator motor, hiki ke nānā ʻole ʻia.ʻO ka hoʻoheheʻe ʻia ʻana o ka hale ka hoʻemi ʻana i nā pae haʻalulu kokoke i ke alapine resonant ma o ka hoʻohana ʻana i kahi mīkini hoʻoheheʻe ikehu kiʻekiʻe, e like me ka mea i hōʻike ʻia, a noʻonoʻo wale ʻia ma kahi a kokoke paha i ke alapine resonant.

Kiʻi

hopena pulu

Ma hope o ka hoʻohui ʻana i nā wiliwili i ka stator, ua mālama ʻia ka ʻili o nā wili i loko o ka pahu hao me ka varnish, ka pepa insulating, varnish a me ke kaula keleawe i hoʻopili ʻia i kekahi i kekahi, a ʻo ka pepa insulating i loko o ka slot pili pū i nā niho. o ke kumu hao.No laila, ʻo ka wili i loko o ka puʻu he hāʻawi ʻoʻoleʻa i ke kumu hao a ʻaʻole hiki ke mālama ʻia ma ke ʻano he nuipa hou.Ke hoʻohana ʻia ke ʻano mea hoʻopau no ka nānā ʻana, pono e loaʻa nā ʻāpana e hōʻike ana i nā ʻano mechanical like ʻole e like me nā mea o nā wili i ka cogging.I ka wā o ka hoʻokō ʻana i ke kaʻina hana, e hoʻāʻo e hōʻoia i ka maikaʻi o ka peʻa paʻi, hoʻonui i ka ʻāʻī o ka wili wili, hoʻomaikaʻi i ka paʻa o ka wili a me ke kumu hao, hoʻonui i ka rigidity o ke ʻano kaʻa, hoʻonui i ke alapine maoli e pale aku ai. resonance, hoemi i ka vibration amplitude, a hoemi i na hawewe electromagnetic. walaʻau.

ʻOkoʻa ka alapine maoli o ka stator ma hope o ke kaomi ʻana i loko o ka pahu pahu me ka mea o ka stator core hoʻokahi. Hiki i ka casing ke hoʻomaikaʻi nui i ka alapine paʻa o ka hoʻolālā stator, ʻoi aku ka nui o ke alapine paʻa haʻahaʻa. ʻO ka piʻi ʻana o nā wahi hana wikiwiki rotational e hoʻonui i ka paʻakikī o ka pale ʻana i ka resonance i ka hoʻolālā kaʻa.I ka hoʻolālā ʻana i ke kaʻa, pono e hoʻemi ʻia ka paʻakikī o ka hoʻokumu ʻana o ka pūpū, a hiki ke hoʻonui ʻia ke alapine maoli o ka ʻōnaehana kaʻa ma o ka hoʻonui kūpono ʻana i ka mānoanoa o ka pūpū e pale ai i ka hiki ʻana mai o ka resonance.Eia hou, he mea nui e hoʻonohonoho pono i ka pilina pili ma waena o ka stator core a me ka pahu i ka wā e hoʻohana ai i ka manaʻo o ka mea palena.

Nānā Electromagnetic o nā Motors

Ma ke ʻano he hōʻailona koʻikoʻi o ka hoʻolālā electromagnetic o ka kaʻa, hiki ke hōʻike maʻamau ka mānoanoa magnetic i ke kūlana hana o ka kaʻa.No laila, lawe mua mākou a nānā i ke kumukūʻai magnetic, ʻo ka mea mua e hōʻoia i ka pololei o ka simulation, a ʻo ka lua e hāʻawi i kumu no ka unuhi ʻana o ka ikaika electromagnetic.Hōʻike ʻia ke kiʻikuhi ma lalo nei ke kiʻi ʻoniʻoni ʻoniʻoni i lawe ʻia.

Kiʻi

Hiki ke ʻike ʻia mai ka palapala ao e ʻoi aku ka kiʻekiʻe o ka mākēneki ma ke kūlana o ke alahaka hoʻokaʻawale magnetic ma mua o ka helu inflection o ka pihi BH o ka stator a me ka rotor core, hiki ke pāʻani i kahi hopena hoʻokaʻawale magnetic ʻoi aku ka maikaʻi.

Kiʻi

ʻAha ea kaʻahele kaʻahele ʻana

Wehe i nā mānoanoa magnetic o ka ea mokulele a me ke kūlana niho, kahakiʻi i kahi pihi, a hiki iā ʻoe ke ʻike i nā waiwai kikoʻī o ka ea ea kaʻa magnetic density a me nā niho magnetic density. ʻO ka mānoanoa magnetic o ka niho kahi mamao loa mai ka helu inflection o ka mea, i manaʻo ʻia ma muli o ka poho hao kiʻekiʻe ke hoʻolālā ʻia ke kaʻa i ka wikiwiki kiʻekiʻe.

Kaʻa Modal Analysis

Ma muli o ke kumu hoʻohālike kaʻa kaʻa a me ka grid, e wehewehe i ka mea, e wehewehe i ke kumu stator e like me ke kila kila, a wehewehe i ka pahu e like me ka mea alumini, a e hana i ka loiloi modal ma ke kaʻa holoʻokoʻa.Loaʻa ke ʻano holoʻokoʻa o ke kaʻa e like me ka mea i hōʻike ʻia ma ke kiʻi ma lalo nei.

Kiʻi