A-phase-phase asynchronousmotaimhando yemota induction inofambiswa nekubatanidza panguva imwe chete 380V matatu-phase AC current (phase musiyano we120 degrees). Nekuda kwekuti rotor uye stator inotenderera magineti yematatu-phase asynchronous mota inotenderera munzira imwechete uye nekumhanya kwakasiyana, kune slip rate, saka inonzi matatu-phase asynchronous mota.
Iyo inomhanya ye rotor yetatu-phase asynchronous mota yakaderera pane kumhanya kweiyo inotenderera magineti. Rotor winding inogadzira simba remagetsi uye razvino nekuda kwekufamba kwehukama nemagnetic field, uye inopindirana nemagnetic field kugadzira electromagnetic torque, kuwana shanduko yesimba.
Kuenzaniswa ne-single-phase asynchronousmota, matatu-phase asynchronousmotakuva nekushanda kuri nani uye kunogona kuchengetedza zvinhu zvakasiyana-siyana.
Zvinoenderana neakasiyana marotor zvimiro, matatu-chikamu asynchronous motors anogona kukamurwa kuita cage mhando uye ronda rudzi.
Iyo asynchronous mota ine cage rotor ine chimiro chakareruka, yakavimbika mashandiro, huremu huremu, uye mutengo wakaderera, wakashandiswa zvakanyanya. Dambudziko rayo guru ndiko kuoma kwekugadzirisa kukurumidza.
Iyo rotor uye stator yeronda matatu-phase asynchronous mota yakashongedzerwa nematatu-phase windings uye yakabatana kune yekunze rheostat kuburikidza neinotsvedza mhete, mabhurashi. Kugadzirisa kuramba kweiyo rheostat kunogona kuvandudza mashandiro ekutanga emota uye kugadzirisa kumhanya kwemota.
Iyo yekushanda musimboti yetatu-chikamu asynchronous mota
Kana symmetrical three-phase alternating current inoshandiswa kune matatu-phase stator winding, inotenderera magineti inogadzirwa iyo inotenderera newachi nechomukati denderedzwa nzvimbo ye stator uye rotor pa synchronous speed n1.
Sezvo iyo inotenderera magineti inotenderera pa n1 kumhanya, iyo rotor conductor yakamira pakutanga, saka rotor conductor inocheka stator inotenderera magineti kuti ibudise induced electromotive simba (kutungamirwa kweiyo induced electromotive simba inotemwa neRudyi-ruoko. kutonga).
Nekuda kwekupfupika kutenderera kweiyo rotor conductor pamigumo yese nepfupi-yedunhu mhete, pasi pechiito cheiyo induced electromotive force, rotor conductor inoburitsa ikozvino induced iyo inongove munzira imwechete neiyo induced electromotive force. Ikozvino inotakura conductor ye rotor inoiswa pasi pesimba remagetsi mune stator magnetic field (kutungamirirwa kwesimba kunogadziriswa uchishandisa mutemo wekuruboshwe). Electromagnetic force inogadzira electromagnetic torque pane rotor shaft, ichityaira rotor kutenderera ichienda kune inotenderera magineti.
Kuburikidza nekuongorora kuri pamusoro, zvinogona kugumiswa kuti iyo misimboti yekushanda yemota yemagetsi ndeiyi: kana matatu-phase stator windings yemota (imwe neimwe ine 120 degree magetsi angle musiyano) inopihwa matatu-phase symmetrical alternating current. , mhepo inotenderera yemagineti inogadzirwa, iyo inocheka mhepo inotenderera uye inogadzira induced current mu rotor winding (iyo rotor winding is a closed circuit). Iyo yazvino inotakura rotor conductor inoburitsa simba remagetsi pasi pechiito cheiyo stator inotenderera magineti, Saka, electromagnetic torque inoumbwa pane mota shaft, ichityaira mota kuti itenderere munzira imwechete neinotenderera magineti.
Wiring dhizaini yematatu-chikamu asynchronous mota
Basic wiring yematatu-chikamu asynchronous motors:
Iwaya nhanhatu kubva pamhepo yeasynchronous mota yechitatu-chikamu inogona kukamurwa kuita nzira mbiri dzekubatanidza: delta delta yekubatanidza uye nyeredzi yekubatanidza.
Waya nhanhatu = matatu mota windings = matatu anogumira + matatu miswe inopera, ine multimeter inoyera kubatana pakati pemusoro nemuswe magumo emhepo yakafanana, kureva U1-U2, V1-V2, W1-W2.
1. Triangle delta yekubatanidza nzira yematatu-chikamu asynchronous motors
Nzira yekubatanidza yetriangle delta ndeyekubatanidza misoro nemiswe mitatu inomonereka munhevedzano kuti iite katatu, sezvinoratidzwa pamufananidzo:
2. Nzira yekubatanidza nyeredzi yematatu-phase asynchronous motors
Nyeredzi yekubatanidza nzira ndeyekubatanidza muswe kana musoro magumo emhepo nhatu, uye dzimwe tambo nhatu dzinoshandiswa semagetsi ekubatanidza. Nzira yekubatanidza sezvinoratidzwa mumufananidzo:
Tsananguro yeiyo Wiring Dhiyagiramu yeTatu Phase Asynchronous Motor mune Figure uye Chinyorwa
Three phase motor junction box
Kana iyo matatu-phase asynchronous mota yakabatana, nzira yekubatanidza yechidimbu chekubatanidza mubhokisi rejunction ndeiyi inotevera:
Kana iyo matatu-chikamu asynchronous mota yakabatana pakona, nzira yekubatanidza yeiyo junction bhokisi yekubatanidza chidimbu ndeiyi inotevera:
Pane nzira mbiri dzekubatanidza dzematatu-phase asynchronous motors: nyeredzi yekubatanidza uye katatu yekubatanidza.
Triangulation nzira
Mumakoiri anomonereka ane dhayamita rimwe chete newaya, nzira yekubatanidza nyeredzi ine kutenderera kushoma katatu pachikamu (1.732 times) uye simba rakapetwa katatu pane nzira yekubatanidza katatu. Iyo nzira yekubatanidza yemota yakapedzwa yakagadziriswa kuti imire nevoltage ye380V uye kazhinji haina kukodzera kugadziridzwa.
Iyo nzira yekubatanidza inogona kushandurwa chete kana matatu-phase voltage level yasiyana neyakajairwa 380V. Semuenzaniso, kana matatu-phase voltage level iri 220V, kushandura nzira yekubatanidza nyeredzi yepakutanga matatu-phase voltage 380V kune matatu matatu nzira yekubatanidza inogona kushanda; Kana iyo matatu-phase voltage level iri 660V, iyo yekutanga-phase voltage 380V delta yekubatanidza nzira inogona kuchinjwa kuita nzira yekubatanidza nyeredzi, uye simba rayo rinoramba risina kuchinjika. Kazhinji, mota dzepasi-simba dzine nyeredzi dzakabatana, nepo ma-high-power motors ari delta akabatana.
Payakayerwa voltage, delta yakabatana mota inofanirwa kushandiswa. Kana ikashandurwa kuita nyeredzi yakabatana mota, ndeyekuderedzwa kwemagetsi kushanda, zvichikonzera kudzikira kwemagetsi emagetsi uye kutanga ikozvino. Paunenge uchitanga motokari yepamusoro-simba (delta yekubatanidza nzira), ikozvino yakanyanya kukwirira. Kuti uderedze kukanganiswa kweiyo yekutanga ikozvino pamutsara, nhanho-pasi yekutanga inogamuchirwa. Imwe nzira ndeyekushandura yekutanga delta yekubatanidza nzira kuita nyeredzi nzira yekubatanidza yekutanga. Mushure mekunge nzira yekubatanidza nyeredzi yatangwa, inoshandurwa kudzokera kunzira yekubatanidza delta yekushanda.
Wiring dhizaini yematatu-chikamu asynchronous mota
Dhiyagiramu yemuviri yekumberi uye kumashure ekuchinjisa mitsetse yematatu-chikamu asynchronous mota:
Kuti uwane kumberi uye kudzosera kudzora kwemota, chero zvikamu zviviri zvemagetsi ayo anogona kugadziridzwa zvine chekuita nemumwe (isu tinozvidaidza kuti commutation). Kazhinji, chikamu cheV chinoramba chisina kuchinjwa, uye chikamu cheU uye chikamu cheW chinogadziriswa maererano nemumwe. Kuti ive nechokwadi chekuti kutevedzana kwechikamu chemota kunogona kuchinjika zvakavimbika kana vaviri vanobatana vachiita, wiring inofanirwa kuenderana pachiteshi chepamusoro chekusangana, uye chikamu chinofanira kugadziridzwa pazasi chiteshi cheanobatika. Nekuda kwekutevedzana kwechikamu kuchinjika kwezvikamu zviviri izvi, zvinofanirwa kuve nechokwadi kuti maviri maKM coil haagone kugoneswa panguva imwe chete, zvikasadaro chikamu chakakomba chechikamu chepfupi zvikanganiso zvinogona kuitika. Nokudaro, kupindirana kunofanira kugamuchirwa.
Nokuda kwezvikonzero zvekuchengetedza, kaviri inopindirana mberi uye reverse control circuit nebhokisi rekuvhara (mechanical) uye contactor interlocking (magetsi) inowanzoshandiswa; Nekushandisa bhatani kuvharira, kunyangwe mabhatani ekumberi nekumashure akadzvanywa panguva imwe chete, iwo maviri anobatika anoshandiswa kugadzirisa chikamu haagone kugoneswa panguva imwe chete, nemuchina kudzivirira chikamu kuenda kuchikamu mapfupi maseketi.
Mukuwedzera, nekuda kwekupindirana kwevashandisi vakaiswa, chero bedzi imwe yevanobatana ichiiswa simba, iyo yakareba yakavharwa kubata haizovhari. Nenzira iyi, mukushandiswa kwemakanika uye magetsi maviri maviri anopindirana, iyo magetsi emagetsi system yemota haigone kuve nechikamu kusvika kuchikamu mapfupi maseketi, kuchengetedza mota nemazvo uye kudzivirira tsaona dzinokonzerwa nechikamu kuenda kuchikamu mapfupi maseketi panguva yechikamu modulation, inogona kupisa contactor.
Nguva yekutumira: Aug-07-2023
