1. Manual control circuit
Iri ibhuku rekutonga redunhu rinoshandisa banga switch uye maseketi anotyora kudzora kushanda-ku-off kweatatu-chikamu asynchronous motorManual control circuit.
Dunhu rine chimiro chakareruka uye chakakodzera chete kune madiki-anokwanisa motors anotanga zvisingaite.Iyo mota haigone kudzorwa otomatiki, uye haigone kudzivirirwa kubva ku zero voltage uye kurasikirwa kwemagetsi.Isa seti yemafuse FU kuita kuti mota ive nekuremerwa uye pfupi yekudzivirira yedunhu.
2. The jog control circuit
Kutanga uye kumira kwemota kunodzorwa nebhatani chinja, uye chinobatika chinoshandiswa kuona iko-kudzima kushanda kwemota.
Kukanganisa: Kana iyo mota iri mujog control wedunhu ichimhanya ichienderera, bhatani rekutanga SB rinofanira kugara rakabatwa pasi neruoko.
3. Kuenderera mberi kwekuita kudzora dunhu (kureba kufamba kunodzora)
Kutanga uye kumira kwemota kunodzorwa nebhatani chinja, uye chinobatika chinoshandiswa kuona iko-kudzima kushanda kwemota.
4. The jog uye refu-kufamba kudzora redunhu
Mimwe michina yekugadzira inoda kuti mota ikwanise kufambisa zvese jog uye kureba.Semuenzaniso, kana chimbo chemuchina chakajairika chiri mukugadzirisa zvakajairwa, mota inotenderera ichienderera, kureva kuti, inomhanya-refu, nepo kazhinji ichidikanwa kujog panguva yekutumwa uye kugadzirisa.
1. Jog uye kureba-yekufamba kudzora dunhu rinodzorwa nekuchinjisa switch
2. Jog uye marefu-kufamba ekudzora maseketi anodzorwa nemabhatani anoumbwa
Kupfupisa, kiyi yekuziva kumhanya-refu uye kumhanya-mhanya kutonga kwemutsara ndeyekuti inogona kuve nechokwadi chekuti bazi rekuzvivharira rakabatana mushure mekunge KM coil yasimbiswa.Kana iyo yekuzvivharira bazi inogona kubatanidzwa, kufamba kwenguva refu kunogona kuwanikwa, kana zvisina kudaro chete jog kufamba kunogona kuwanikwa.
5. Forward and reverse control circuit
Forward and reverse control inodaidzwa zvakare kuti reversible control, iyo inogona kuona mafambiro ezvikamu zvekugadzira mune zvese zvakanaka uye zvisina kunaka nzira panguva yekugadzira.Kune matatu-phase asynchronous mota, kuti ione kumberi uye kudzosera kumashure, inongoda kushandura kutevedzana kwechikamu chemagetsi ayo, ndiko kuti, kugadzirisa chero zvikamu zviviri zvematatu-chikamu tambo dzemagetsi mudunhu guru.
Pane nzira mbiri dzinowanzo shandiswa kudzora: imwe ndeye kushandisa mubatanidzwa chinja chinja kutevedzana kwechikamu, uye imwe ndeye kushandisa huru kuonana kweiyo contactor kushandura kutevedzana kwechikamu.Iyo yekutanga inonyanya kukodzera mota dzinoda kazhinji kumberi uye kutenderera kutenderera, nepo yekupedzisira ichinyanya kukodzera mota dzinoda kazhinji kumberi uye kutenderera kutenderera.
1. Positive-stop-reverse control circuit
Dambudziko guru remagetsi rinopindirana mberi uye reverse control circuits nderekuti kana uchichinja kubva kune imwe dhiraivha kuenda kune imwe, bhatani rekumisa SB1 rinofanira kudzvanywa pakutanga, uye shanduko haigone kuitwa zvakananga, izvo zviri pachena kuti hazvina kunaka.
2. Forward-reverse-stop control circuit
Dunhu iri rinosanganisa zvakanakira kuvharika kwemagetsi uye bhatani rekuvhara, uye idunhu rakakwana risingagone kusangana nezvinodiwa zvekutanga kwakananga kwekutenderera kumberi uye kumashure, asiwo ine kuchengetedzwa kwepamusoro uye kuvimbika.
Line protection link
(1) Kudzivirirwa kwepfupi-kutenderera Dunhu guru rinogurwa nekunyunguduka kwefuse kana chiitiko chepfupi-circuit.
(2) Kudzivirirwa kwekuremerwa kunoitwa ne thermal relay.Nekuti iyo thermal inertia ye thermal relay yakakura, kunyangwe kana yazvino kakati wandei iyo yakayerwa ikozvino ichiyerera kuburikidza nechinhu chinopisa, iyo thermal relay haishande nekukasira.Naizvozvo, kana nguva yekutanga yemota isati yanyanya kureba, iyo thermal relay inogona kumira nekukanganisa kweiyo yekutanga mota uye haishande.Chete kana mota yaremerwa kwenguva yakareba, ichaita, bvisa dhizaini yekudzora, coil coil inopera simba, kucheka dunhu guru remota, uye kuona kudzivirira kuwanda.
(3) Undervoltage uye undervoltage kuchengetedzwa Undervoltage uye undervoltage dziviriro dzinoonekwa kuburikidza nekuzvivharira-kukiya mabiko eiyo contactor KM.Mukushanda kwakajairika kwemota, iyo grid voltage inonyangarika kana kuderera nekuda kwechimwe chikonzero.Kana iyo voltage yakaderera pane yekuburitsa voltage yecontactor coil, iyo contactor inoburitswa, iyo yekuzvivharira-yega inobviswa, uye iyo huru yekusangana inobviswa, ichicheka simba remota., mota inomira.Kana iyo magetsi emagetsi akadzokera kune yakajairika, nekuda kwekuzvivharira kusunungurwa, mota haizotanga yega, ichidzivirira tsaona.
• Nzira dzekutanga dzedunhu dziri pamusoro dzakazara-voltage kutanga-up.
Kana simba rekushandura richibvumira, squirrel-cage asynchronous motor inofanira kutangwa zvakananga pamagetsi akazara sezvinobvira, izvo zvisingagoni kungovandudza kuvimbika kwedunhu rekutonga, asiwo kuderedza basa rekuchengetedza remidziyo yemagetsi.
6. Nhanho-pasi kutanga dunhu reasynchronous mota
• Iyo yakazara-voltage yekutanga ikozvino yeasynchronous mota inogona kazhinji kusvika 4-7 nguva yakatarwa ikozvino.Kuwedzeredza kutanga ikozvino kunoderedza hupenyu hwemota, kukonzeresa kuti yechipiri voltage yetransformer idonhe zvakanyanya, kuderedza kutangisa kwemotor pachayo, uye kunyange kuita kuti mota isakwanise kutanga zvachose, uye zvakare kukanganisa kushanda kwakajairwa kweimwe. midziyo mune imwecheteyo magetsi ekupa network.Nzira yekutonga sei kana injini inogona kutanga nemagetsi akazara?
• Kazhinji, avo vane simba remotokari pasi pe10kW vanogona kutangwa zvakananga.Kunyangwe iyo asynchronous mota iri pamusoro pe10kW inobvumidzwa kutanga zvakananga zvinoenderana nereshiyo yehuwandu hwemotokari uye simba rekushandura simba.
• Kune mota yenzvimbo yakapihwa, kazhinji shandisa empirical formula inotevera kufungidzira.
•Iq/Ie≤3/4+simba rekushandura simba (kVA)/[4×motor kukwanisa (kVA)]
• Muchidimbu, Iq-motor full voltage kutanga ikozvino (A);Kureva-motor rated current (A).
• Kana mhedzisiro yekuverenga ichigutsa iyo iri pamusoro empirical formula, zvinowanzoitika kuti utange pakumanikidzwa kwakazara, kana zvisina kudaro, hazvibvumidzwe kutanga pakumanikidzwa kwakazara, uye kuderedzwa kwemagetsi kutanga kunofanirwa kutariswa.
•Dzimwe nguva, kuitira kudzikamisa uye kuderedza kukanganiswa kweiyo yekutanga torque pamichina yemagetsi, mota inobvumira yakazara-voltage kutanga zvakare inotora yakaderedzwa-voltage yekutanga nzira.
• Pane nzira dzakati kuti dzekudzika-pasi kutanga kwe squirrel-cage asynchronous motors: stator circuit series resistance (kana reactance) nhanho-pasi kutanga, auto-transformer nhanho-pasi kutanga, Y-△ danho-pasi kutanga, △-△ danho. -down kutanga, etc. Nzira idzi dzinoshandiswa kudzikamisa kutanga ikozvino (kazhinji, kutanga ikozvino mushure mekudzikisa magetsi ndeye 2-3 nguva yakarongerwa ikozvino yemotokari), kuderedza kudonha kwemagetsi emagetsi emagetsi, uye kuve nechokwadi. kushanda kwakajairika kwemidziyo yemagetsi yemushandisi wega wega.
1. Series kuramba (kana reactance) nhanho-pasi kutanga kudzora redunhu
Munguva yekutanga kwemota, kuramba (kana reactance) kunowanzo kubatanidzwa munhevedzano mune matatu-chikamu stator dunhu kudzikisa voltage pane stator mhepo, kuitira kuti mota inogona kutangwa pane yakaderedzwa voltage kuzadzisa chinangwa. yekudzikamisa yekutanga ikozvino.Kana iyo mota yekumhanyisa yave padhuze neyakayerwa kukosha, cheka nhevedzano kuramba (kana reactance), kuitira kuti mota ipinde mune yakajairika kushanda kweiyo yakazara voltage.Pfungwa yekugadzira yerudzi urwu rwedunhu kazhinji kushandisa iyo nguva musimboti kugura kuramba (kana kuita) munhevedzano paunotanga kupedzisa maitiro ekutanga.
Stator tambo kuramba nhanho-pasi kutanga kudzora redunhu
• Kubatsira kwekutanga kupikisa kunotanga ndeyokuti dunhu rekutonga rine chimiro chakareruka, mari shoma, chiito chakavimbika, simba rakagadziridzwa, uye rinoita kuti kuve nechokwadi chehutano hwemagetsi.Nekudaro, nekuda kwekudzikiswa kwemagetsi eiyo stator tambo kuramba, yekutanga ikozvino inodzikira zvichienderana neiyo stator voltage, uye yekutanga torque inodzikira zvichienderana neskweya nguva yevolti kudonha reshiyo.Panguva imwecheteyo, kutanga kwega kwega kunodya simba rakawanda.Naizvozvo, iyo matatu-phase squirrel-cage asynchronous mota inotora nzira yekutanga yekupikisa nhanho-pasi, iyo inongokodzera madiki uye epakati-anokwana mota dzinoda kutsetseka kutanga uye nguva uko kutanga kusingawanzo.Mahombe-anokwana mota anonyanya kushandisa akateedzana reactance nhanho-pasi kutanga.
2. String autotransformer nhanho-pasi kutanga kudzora redunhu
• Munharaunda yekudzora ye auto-transformer nhanho-pasi kutanga, kudzikamisa kutanga ikozvino kwemota kunoonekwa nedanho-pasi chiito che auto-transformer.Iyo yekutanga ye autotransformer yakabatana kune magetsi, uye yechipiri ye autotransformer yakabatana nemota.Yechipiri ye autotransformer kazhinji ine 3 matepi, uye matatu marudzi emagetsi emhando dzakasiyana anogona kuwanikwa.Kana yakashandiswa, inogona kusarudzwa yakasarudzika zvinoenderana nezvinodiwa zvekutanga ikozvino uye kutanga torque.Kana mota yatanga, iyo voltage inowanikwa ne stator winding ndiyo yechipiri voltage ye autotransformer.Kana kutanga kwapera, autotransformer inogurwa, uye mota yakabatana zvakananga kune magetsi, kureva, iyo yekutanga voltage ye autotransformer inowanikwa, uye mota inopinda yakazara voltage kushanda.Iri rudzi rwe autotransformer rinowanzo kunzi sekutanga compensator.
• Munguva yenhanho-pasi yekutanga nzira ye autotransformer, chiyero chekutanga ikozvino kusvika kune yekutanga torque inoderedzwa ne square of the transformation ratio.Pasi pemamiriro ekuwana imwechete yekutanga torque, iyo yazvino yakawanikwa kubva kune yemagetsi gidhi neiyo autotransformer nhanho-pasi kutanga idiki kwazvo pane iyo nekupikisa nhanho-pasi kutanga, kukanganisa pane grid ikozvino kudiki, uye kurasikirwa kwesimba. idiki.Naizvozvo, iyo autotransformer inonzi yekutanga compensator.Mune mamwe mazwi, kana kutanga ikozvino kwehukuru hwakafanana kunowanikwa kubva kumagetsi emagetsi, danho-pasi rinotanga ne autotransformer richagadzira yakakura kutanga torque.Iyi nzira yekutanga inowanzoshandiswa kune mota dzine hukuru hukuru uye yakajairika kushanda mukubatanidza nyeredzi.Izvo zvisingabatsiri ndezvekuti autotransformer inodhura, chimiro chekudzivirira chinopesana chakaoma, vhoriyamu yakakura, uye inogadzirwa uye inogadzirwa maererano ne discontinuous working system, saka kazhinji kushanda hakubvumirwi.
3. Y-△ nhanho-pasi kutanga kudzora dunhu
• Chakanakira chetatu-phase squirrel-cage asynchronous mota ine Y-△ nhanho-pasi kutanga ndeiyi: kana stator winding yabatanidzwa munyeredzi, yekutanga voltage i1/3 yeiyo kana delta yekubatanidza ichishandiswa zvakananga, uye kutanga ikozvino 1/3 yeiyo kana delta yekubatanidza inoshandiswa./ 3, saka maitiro ekutanga emazuva ano akanaka, dunhu riri nyore, uye mari ishoma.Izvo zvisingabatsiri ndezvekuti torque yekutanga yakaderedzwawo kusvika 1/3 yenzira yekubatanidza delta, uye maitiro e torque haana kunaka.Saka mutsara uyu wakakodzera kuremedza mutoro kana kuti hapana-mutoro wekutanga zviitiko.Pamusoro pezvo, zvinofanirwa kucherechedzwa kuti kuwirirana kwegwara rekutenderera kunofanirwa kutariswa kana uchibatanidza Y-
Nguva yekutumira: Jun-30-2022