He aha te rereketanga i waenga i te inverter overloading me te overcurrent?Ko te taumahatanga he ariā o te waa, ko te tikanga ka nui ake te utaina i te utaina kua tohua e tetahi maha i te wa tonu.Ko te kaupapa tino nui o te taumaha ko te wa tonu.Hei tauira, ko te nui o te kaha o te kaitahuri auau he 160% mo te meneti kotahi, ara, karekau he raruraru ka eke te kawenga ki te 1.6 nga wa i te kawenga whakatau mo te meneti kotahi tonu.Mena ka iti haere te uta i roto i te 59 hēkona, karekau e puta te whakaoho o te taumaha.I muri noa iho i te 60 hēkona, ka puta te whakaoho te taumaha.Ko te overcurrent he ariā ine, e tohu ana ki te maha o nga wa ka nui ake te utaina i te kawenga whakatau.He poto rawa te wa o te auheke, a he tino nui te maha, i te nuinga o te waa neke atu i te tekau, he maha ranei nga wa.Hei tauira, i te wa e rere ana te motuka, ka tutakina ohorere te rakau miihini, katahi ka tere te piki o te ia o te motini i roto i te wa poto, ka arai atu ki te koretake.
Ko te nui o naianei me te taumahatanga ko nga hapa e tino kitea ana o nga kaitahuri auau.Ki te wehewehe mena ko te kaitahuri auau he hikoi i runga i naianei, he nui ake ranei te taumahatanga, me tino marama te rereketanga i waenga i a raatau.Ko te tikanga, me nui ake te taumahatanga, engari he aha te mea me wehe te kaitahuri auau i te taumahatanga mai i te taumahatanga?E rua nga rereketanga nui: (1) Ko nga taonga tiaki rereke Ka whakamahia te overcurrent ki te tiaki i te kaitahuri auau, ka whakamahia te taumaha ki te tiaki i te motuka.No te mea ko te kaha o te kaitahuri auau i etahi wa me whakanui ake e te taputapu kotahi, kia rua ranei nga taputapu atu i te kaha o te motuka, i tenei keehi, ka nui te utaina o te motuka, kaore te kaitahuri auau e tino kaha ake.Ko te whakamarutanga taumaha ka mahia e te mahi tiaki hiko hiko i roto i te kaitahuri auau.Ina tatūkē te mahi whakamarumaru waiariki hiko, me tika te tatūkē "ōwehenga whakamahi o nāianei", ara, te ōrau o te ōwehenga o te nāianei reiti o te motini ki te reanga o te kaitahuri auau: IM%=IMN*100 %I/IM Kei hea, im%-ōwehenga whakamahi o nāianei;IMN—-i whakatauhia te naianei o te motini, a;IN— te naianei o te kaitahuri auau, a.(2) He rereke te tere o te huringa o naianei Ka puta te whakamarumaru taumaha i roto i nga mahi o nga miihini whakangao, a he iti noa te huringa o naianei di/dt;He ohorere te tere o te tere i tua atu i te taumahatanga, a he nui tonu te huringa o te di/dt o naianei.(3) Ko te whakamaru i te taumaha he ahuatanga o te waa hurihuri.Ko te whakamarutanga o te taumaha ka aukati i te werawera o te motuka, na reira ko nga ahuatanga o te "tepe wa hurihuri" he rite ki te reera waiariki.Arā, ki te kore e nui ake i te nāianei kua whakatauhia, ka roa ake te wa rere e whakaaetia ana, engari ki te nui ake, ka whakapotohia te wa rere e whakaaetia ana.I tua atu, i te mea ka heke te auau, ka kino te wera o te motuka.Na reira, i raro i te taumahatanga o te 50%, ka iti ake te auau, ka poto ake te waa whakahaere e whakaaetia ana.
Ko te haerenga o te tere o te kaitahuri tere, ka wehea te hee o te hurihanga o naianei ki te hapa poto, te hee i te wa e mahi ana me te hee i te waa whakatere me te whakaheke, me etahi atu. i te wa e mahi ana, engari ki te whakaara ano i muri i te tautuhi, ka tere haere i te wa ka piki te tere.(b) He nui te ngaru o te ia, engari ko te nuinga o nga kaitahuri auau kua kaha ki te mahi i te whakamarumaru kia kore e pakaru.Na te mea he tere te haere o te whakamarumaru, he uaua ki te mataki i tona au.(2) Whakawa me te whakahaere Ko te mahi tuatahi ko te whakawa mena he ara iahiko poto.Hei whakahaere i te whakawakanga, ka taea te hono i te voltmeter ki te taha whakauru i muri i te tautuhi me mua i te whakaara ano.Ka timata ano, ka ata huri te potentiometer mai i te kore, me te wa ano, whakarongo ki te voltmeter.Mena ka piki ake te tere o te putanga o te kaitahuri, ka whakaatu te tohu o te voltmeter ki te hoki ki te “0″ inamata, ko te tikanga ko te mutunga o te whakaputanga o te kaitahuri kua porowhita-poto, kua noho whenua ranei.Ko te mahi tuarua ko te whakawa mena he poto te whakamaarama o roto, o waho ranei.I tenei wa, me momotu te hononga i te pito putanga o te kaitahuri auau, katahi ka huri te potentiometer ki te whakanui ake i te auau.Mena kei te haere tonu, ko te tikanga he poto te kaitahuri auau;Ki te kore e hikoi ano, ko te tikanga he ara iahiko poto kei waho o te kaitahuri auau.Tirohia te raina mai i te kaitahuri auau ki te motini me te motini ano.2, he tino mama te utaina o te taumahatanga, engari he hikoi te tere: He ahuatanga ahurei tenei o te whakaritenga tere tere.I roto i te aratau mana V/F, he raruraru tino nui: ko te koretake o te punaha hiko hiko i te wa e mahi ana.Ko te take matua kei roto: I te wa e rere ana i te auau iti, hei peia i te kawenga taumaha, ka hiahiatia he utu taipana (ara, te whakapai ake i te tauwehenga U/f, e kiia ana ko te whakanui taipana).Ka huri te tohu haapu o te ara iahiko autō nekeneke ki te utaina.Ko tenei haerenga o naianei na te taarua o te ara iahiko autō i te nuinga o te waa ka iti te tere me te taumahatanga.Rongoā: Whakaritea te ōwehenga U/f.3, te nui o te taumahatanga: (1) Te ahua o te hee Ko etahi miihini whakangao ka piki ake te uta i te wa e mahi ana, ka "piri".Ka tino heke te tere o te motini na te kore e nekehia o te whitiki, ka kaha te piki o te naianei, a, kua roa rawa te whakamarumaru o te utaina ki te mahi, ka mutu ka pakaru te tere.(2) Otinga (a) Tuatahi, tirohia mena kei te he te miihini tonu, a ki te he, whakatikahia te miihini.(b) Mena he mea noa tenei taumahatanga i roto i te mahi whakaputa, tuatahi ka whakaaro mena ka taea te whakanui ake te owehenga tuku i waenga i te motini me te uta?Ko te whakanui tika i te ōwehenga tuku ka taea te whakaiti i te taipana parenga i runga i te motuka motuka me te karo i te ahuatanga o te koretake o te whitiki.Mena kaore e taea te whakanui ake i te tauwehenga whakawhiti, me whakanui ake te kaha o te motuka me te huringa auau.4. He nui ake te tere i te wa o te whakatere, te whakaheke ranei: Na te tere rawa o te whakatere, te whakaheke ranei, a ko nga tikanga ka taea e whai ake nei: (1) Whakaroahia te wa whakatere (whakaheke).Tuatahi, me maarama mena ka whakaaetia kia whakaroahia te tere tere, te wa whakaheke ranei i runga i nga whakaritenga o te tukanga whakaputa.Mena ka whakaaetia, ka taea te whakaroa.(2) Matapae tika i te mahi whakatere (whakaheke) maimoatanga-whaiaro (te aukati stall) He mahi a te inverter he maimoatanga-whaiaro (te aukati stall) mo te overcurrent i te wa whakatere me te whakaheke.Ina nui ake te au piki (hinga) i te naianei tepe o runga kua whakaritea, ka whakatarewahia te tere piki (hinga), ka haere tonu te tere piki (hinga) ina taka te ia ki raro i te uara kua whakaritea.
Ko te haerenga nui o te kaitahuri auau Ka taea e te motini te huri, engari ka nui ake te oma rere i te uara whakatau, e kiia nei he taumaha.Ko te tauhohenga taketake o te taumahatanga ko te mea ahakoa ka nui ake te uara o naianei i te uara whakatau, kaore i te nui te nui o te taikaha, a, ko te tikanga karekau i te hanga i te naianei paanga nui.1, te take nui o te taumaha (1) He taumaha rawa te utaina miihini.Ko te ahuatanga nui o te taumahatanga ko te miihini e whakaputa wera ana, ka kitea ma te panui i te rere o te waa i runga i te mata whakaatu.(2) Ko te ngaohiko toru-waahanga kore e taurite ana ka nui rawa te rere o te waa o tetahi waahanga, ka nui rawa te taumahatanga, e tohuhia ana e te whakamahana koretake o te motuka, kaore pea e kitea i te panui i te oma rere mai i te whakaaturanga. mata (no te mea ko te mata whakaatu anake e whakaatu ana i tetahi waahanga o naianei).(3) He mahi pohehe, ka rahua te waahanga rapu o naianei kei roto i te hurihuri, a he nui rawa te tohu o naianei kua kitea, ka mutu ka taka.2. Tikanga tirotiro (1) Tirohia mehemea he wera te motini.Mena kaore i te teitei te pikinga o te pāmahana o te motuka, tuatahi, tirohia mena kua tautuhia te mahi tiaki hiko hiko o te kaitahuri auau.Mēnā he tuwhene tonu te kaitahuri auau, me whakangā te uara tatūkē o te mahi tiaki waiariki hiko.Mena he tiketike rawa te pikinga o te pāmahana o te motini me te taumahatanga he mea noa, ko te tikanga he nui rawa atu te motini.I tenei wa, me whakanuia e tatou te tauwehenga tuku kia tika ai te whakaheke i te uta i runga i te waka motuka.Mena ka taea te whakanui ake, whakanuia te tauwehenga tuku.Mena kaore e taea te whakanui ake i te tauwehenga whakawhiti, me whakanui ake te kaha o te motuka.(2) Tirohia mehemea he taurite te ngaohiko e toru-waahanga i te taha motuka.Mena kaore i taurite te ngaohiko toru-waahanga i te taha motuka, tirohia mehemea kei te taurite te ngaohiko toru-waahanga i te pito putanga o te kaitahuri auau.Ki te kore ano e taurite, kei roto te raru o te kaitahuri auau.Mena ka taurite te ngaohiko i te pito putanga o te kaitahuri auau, ko te raruraru kei roto i te raina mai i te kaitahuri auau ki te motuka.Tirohia mēnā kua titi te tīwiri o ngā kāpeka katoa.Mena he kaiwhakataki, he taputapu hiko ranei kei waenga i te kaitahuri auau me te motini, tirohia mehemea kua whakakikitia nga pito o nga taputapu hiko e tika ana me te pai o nga tikanga whakapiri o nga hoapaki.Mena he taurite te ngaohiko e toru-waahanga i te taha motuka, me mohio koe ki te auau mahi i te wa e paheke ana: Mena he iti te auau mahi ka whakamahia te mana vector (kaore ranei he mana vector), me whakaheke tuatahi te tauwehenga U/f.Mena ka taea tonu te kawe i te kawenga i muri i te whakahekenga, ko te tikanga he nui rawa te U/f taketake me te nui o te uara teitei o te naianei whakaongaonga, na reira ka taea te whakaheke i te waa ma te whakaiti i te tauwehenga U/f.Mena kaore he kawenga pumau i muri i te whakahekenga, me whakaaro tatou ki te whakanui ake i te kaha o te inverter;Mena he mahi mana vector te inverter, me tango te aratau mana vector.
Whakakahoretanga: Ko tenei tuhinga ka whakaputahia mai i te whatunga, a ko nga korero o te tuhinga mo te ako me te whakawhitiwhiti korero anake.Ko te whatunga compressor hau he koretake ki nga tirohanga i roto i te tuhinga.Ko te mana pupuri o te tuhinga na te kaituhi taketake me te turanga.Mena he takahi, tena koa whakapiri mai ki te whakakore.