tekinoroji huru | indasitiri itsva | Ndira 15.2025
Mumashandisirwo emaindasitiri nemabhizinesi, mota dzinotsvedza dzinoshandiswa zvakanyanya nekuda kwekushanda kwadzo kwakanyanya uye simba radzo guru rekuburitsa. Zvisinei, kuverenga voltage yerotor yemota inotsvedza haisi basa riri nyore, izvo zvinoda kuti tinzwisise zvakadzama misimboti uye ma parameter ane chekuita nayo. Chinyorwa chino chichatsanangura zvakadzama maitiro ekuverenga voltage yerotor yemota inotsvedza kuti ikubatsire kuvandudza mashandiro emota uye kushanda kwayo.
1. Matanho ekutanga ekuverenga voltage ye rotor
(I) Sarudza voltage yakayerwa yemota
Voltage yakayerwa yemota ndiyo voltage yakajairika yekugadzirwa kwayo uye mashandiro ayo, iyo inogona kuwanikwa zviri nyore muhunyanzvi hwemota. Kukosha uku ndiko kwakakosha pakuverenga kunotevera, kungofanana nehwaro hwechivakwa chakareba, zvichipa data rakakosha remaitiro ese ekuverenga. Semuenzaniso, mota inotsvedza muchina weindasitiri ine voltage yakayerwa ye380 V yakanyorwa zvakajeka mubhuku rayo rehunyanzvi, inova ndiyo pokutangira pakuverenga kwedu.
(II) Yera kuramba kwerotor Kana mota yamira kushanda, shandisa ohmmeter kuyera kuramba kwerotor winding. Kuramba kwerotor ndechimwe chezvinhu zvakakosha zvinokanganisa voltage yerotor, uye kururama kwekukosha kwayo kwakabatana zvakananga nekuvimbika kwemhedzisiro yekupedzisira yekuverenga. Tichifunga kuti kuramba kwerotor kwatakayera kuri 0.4Ω, data iri richatamba basa guru mukuverenga kunotevera.
(III) Verenga voltage yerotor Voltage yerotor inogona kuwanikwa nekuwedzera voltage yakayerwa yemota nekudzivirira kwerotor. Tichitora voltage yakayerwa ye380 V uye kuramba kwerotor ye0.4Ω zvataurwa pamusoro apa semuenzaniso, voltage yerotor = 380 V × 0.4 = 152 V.
2. Kuongorora kwakadzama kwefomura yemagetsi erotor
(I) Kuumbwa uye kukosha kwefomura
Fomura yemagetsi erotor ishoko remasvomhu rinoongorora zvinhu zvakawanda. Rinobva pamisimboti yemagetsi. Pakati pazvo, stator voltage, slip uye hunhu hwemamota windings ndizvo zvinhu zvikuru zvinopesvedzera. Kunzwisisa kwakarurama kwefomura iyi kunobvumira mainjiniya kufanotaura nemazvo maitiro ekushanda kwemota mumamiriro akasiyana emutoro, sekunge kuva nekiyi yekuvhura chakavanzika chekushanda kwemota.
(II) Kutorwa kwefomura uye mashandisirwo azvo. Zvichibva pamisimboti yemagetsi
Maitiro ekutora rotor voltage formula akaomarara uye akaomarara. Inoratidza hukama hwepedyo huripo pakati pesimba remagineti nemagetsi ari mukati memota, uye ine kukosha kusingatsiviwi mumunda wekudzora nekugadzira mota. Mukushandisa kwakakosha, nerubatsiro rwenyanzvi yekuverenga rotor voltage formula calculation, mainjiniya vanongoda kuisa ma parameter anodiwa senge frequency yemagetsi, huwandu hwemapango emota uye slip kuti vawane nekukurumidza kukosha kwevoltage kwakakodzera kunodiwa kune akasiyana mamiriro ekushanda. Izvi hazvingobatsiri chete kushanda zvakanaka, asiwo zvinoita kuti mota ishande zvakanaka mukati mehuwandu hwekushanda kwakakodzera.
3. Kuverenga kweRotor current uye kugadzirisa mashandiro emota
(I) Tsananguro yakadzama yefomura yemagetsi erotor
Fomura yacho ndeiyi, It=Vt/Zt, apo Vt iri rotor voltage uye Zt iri rotor impedance. Kuverengwa kwe rotor voltage kunosanganisira zvinhu zvakaita se stator voltage uye slip, izvo zvinoda nyanzvi dzemagetsi kuti dzigone kushandisa maformula aya zvakanaka kuitira kuti dziongorore mashandiro emota nemazvo.
(II) Kukosha kwekuverenga rotor current
Kuverenga rotor current kwakakosha kumainjiniya munzira dzakawanda. Kune rumwe rutivi, zvinobatsira kuongorora simba remagetsi remota, zvichibvumira mainjiniya kufanotaura nemazvo shanduko dzemaitiro emota pasi pemagetsi akasiyana ekushanda. Semuenzaniso, panguva yekutanga kwemota, nekutarisa shanduko murotor current, mainjiniya vanogona kuona kana mota ichitanga zvakanaka uye kana paine matambudziko akadai sekuwedzeredza. Kune rumwe rutivi, nekutarisa uye kuongorora rotor current, zvinokwanisika kuwana kudzora kwakanakisa kwemota, kudzivirira zvinobudirira matambudziko angangoitika akadai sekupisa zvakanyanya kwemota, kusashanda zvakanaka kana kutadza kwemuchina, nokudaro zvichiwedzera hupenyu hwebasa remota uye kuvandudza kushanda zvakanaka kwekugadzira.
4. Basa guru rekutsvedza mukuverenga voltage yerotor
(I) Tsanangudzo uye kuverenga kweslip
Kutsvedza kunotsanangurwa semusiyano wekumhanya uripo pakati pesimba remagineti rinotenderera nerotor, zvichiratidzwa sechikamu chekumhanya kwesynchronous.Fomura yacho ndeye S=(N8-Nt)/Ns, apo s iri kutsvedza, N8 iri kumhanya kwesynchronous, uye Nt ndiyo kumhanya kwerotor.
Semuenzaniso, mune imwe mamiriro ekushanda kwemota, kana kumhanya kwesynchronous kuri 1500 rpm uye kumhanya kwerotor kuri 1440 rpm, kutsvedzaS=(1500-1440)/1500=0.04, saka 4%.
(II) Hukama huripo pakati pekutsvedza nekushanda zvakanaka kwe rotor
Pane hukama hwepedyo pakati pekutsvedza nekushanda zvakanaka kwerotor. Kazhinji, rotor inoda huwandu hwakati hwetsvedza kuti igadzire torque uye iwane kushanda kwakajairika kwemota. Zvisinei, kutsvedza kwakanyanya kunotungamira mukurasikirwa kwakanyanya kwekudzivirira uye kudzikira kwemagetsi, izvo zvinokanganisa zvakanyanya kushanda zvakanaka kwemota. Kusiyana neizvi, kutsvedza kwakaderera kunogona kuita kuti mota imhanye pedyo nemamiriro akafanana, asi kuchaderedza simba rekutonga kwemota uye kugona kwayo kuburitsa torque. Naizvozvo, mukugadzirwa kwemota nekushanda kwayo, kuverenga kwakarurama kwekutsvedza uye kugadzirisa zvine musoro kwema parameter ane chekuita nazvo kwakakosha kuti ishandise zvizere rotor voltage formula uye kuve nechokwadi chekuti mota inoshanda zvakanaka uye yakagadzikana pasi pemitoro yakasiyana.
V. Simba rekudzivirira rotor pakushanda zvakanaka kwemota
(I) Hunhu uye simba rekudzivirira rotor
Kuramba kwerotor zvinoreva kuramba kwerotor circuit kuenda kumafambiro emagetsi. Kukosha kwayo kune simba guru pa starting torque, speed regulation uye efficiency yemota. Kuramba kwerotor kwakanyanya kunobatsira kuvandudza starting torque yemota uye kugonesa mota kutanga zvakanaka pasi pemutoro unorema. Zvisinei, panguva yekushanda kwemota, kuramba kwerotor zvakanyanya kuchaita kuti simba riwedzere kurasikirwa, nokudaro zvichideredza kushanda zvakanaka kwemota.
(II) Fomura yekudzivirira rotor uye kushandiswa kwekuongorora zvikanganiso
Fomura yekudzivirira rotor (inowanzo nyorwa seRt) inofunga nezvezvinhu zvakaita sehunhu hwezvinhu zverotor, geometry yerotor uye tembiricha. Kuverenga kwakarurama kwekudzivirira rotor kwakakosha pakushandisa fomura yemagetsi erotor. Munyaya yekuongorora mota nekuchengetedza kudzivirira, nekutarisa shanduko mukudzivirira rotor, matambudziko angangoitika akadai sekusakara kusina kuenzana, kupfupika kwemhepo kana kupisa zvakanyanya anogona kuwanikwa nenguva. Semuenzaniso, kana kupesana kwerotor kukaonekwa kuchikwira kamwe kamwe, zvinogona kureva kuti pane kupfupika kwemhepo munharaunda kana kusabatana zvakanaka murotor winding. Vashandi vekugadzirisa vanogona kutora matanho ekugadzirisa akanangana kuti vadzivise kuitika kwekutadza kwemota, kuwedzera hupenyu hwebasa remota, uye kuona kuti kugadzirwa kwayo kunoramba kuripo uye kwakasimba.
VI. Mienzaniso yekuverenga uye hunyanzvi hwekushandisa mumamiriro ezvinhu chaiwo
(I) Muenzaniso chaiwo wekuverenga
Ngatitii pane mota inotsvedza ine voltage ye stator ye440 V, rotor resistance ye0.35Ω, uye slip ye0.03. Kutanga, zvichienderana ne rotor voltage formula Vt=s*Vs, rotor voltage Vt=0.03*440=13.2 V inogona kuwanikwa. Zvadaro, uchishandisa rotor current formula It=Vt/Zt (tichifunga kuti rotor impedance Zt i0.5Ω), rotor current It=13.2/0.5=26.4 A inogona kuverengerwa.
(II) Unyanzvi hwekushandisa uye matanho ekudzivirira Mukushandisa kunoshanda
Kuti zvive nechokwadi chekuti mhinduro dzekuverenga dzakarurama uye dzakavimbika, zvinhu zvinotevera zvinofanira kucherechedzwa: Chekutanga, shandisai zvishandiso zvekuyera zvakanyatsonaka kuti muwane maparamita emota. Semuenzaniso, pakuyera rotor resistance ne ohmmeter, mudziyo une resolution yepamusoro uye diki error unofanira kusarudzwa; chechipiri, pakupinza maparamita ekuverenga, iva nechokwadi chekuti mayuniti emaparamita akabatana kudzivirira kutsauka mumhedzisiro yekuverenga nekuda kwezvikanganiso zvekushandura mayuniti; chechitatu, ongorora pamwe chete nenzvimbo chaiyo yekushanda uye mamiriro ekushanda emota, semuenzaniso, tichifunga nezve pesvedzero yetembiricha pakudzivirira rotor, munzvimbo ine tembiricha yakakwira, rotor resistance inogona kuwedzera, uye mhedzisiro yekuverenga inofanira kugadziriswa zvakakodzera.
Kuburikidza nesumo yakazara uye yakadzama iri pamusoro apa, ndinotenda kuti une kunzwisisa kwakazara kwenzira yekuverenga yeslip-ring motor rotor voltage uye kukosha kwayo mukugadzirisa mashandiro emota. Mukushanda chaiko, kutevedzera matanho ekuverenga uye kufunga zvizere nezvesimba rezvinhu zvakasiyana-siyana kuchakubatsira kupa zvakanakira mashandiro eslip ring motors, kuvandudza mashandiro ekugadzira maindasitiri uye kuderedza mari yekugadzirisa michina.
Chii chinofanira kutariswa pakuverenga voltage ye rotor yemota dzinotsvedza?
- a. Kururama kwedata
- b. Kunzwisisa uye kushandisa fomura
- c. Zvinhu zvakatipoteredza uye mamiriro ekushanda
- d. Maitiro ekuverenga uye maturusi
Nguva yekutumira: Ndira-15-2025