Ndeapi maitiro eiyo variable frequency motors?

The low-voltage variable frequency motainogadzirwa naLT SIMO Motorvane hunhu hunotevera

1. Electromagnetic dhizaini: Kune akajairwa asynchronous motors, iwo makuru ekuita ma paramita anotariswa panguva yekugadzira patsva huwandu hwekuremedza, kutanga kuita, kushanda nesimba uye simba chinhu. Nokuda kwemajini emagetsi akasiyana-siyana, sezvo kutsvedza kwakakosha kunopesana nemagetsi emagetsi, anogona kutangwa zvakananga kana kutsvedza kwakakosha kuri pedyo ne 1. Nokudaro, kuwandisa kwepamusoro uye kushanda kwekutanga hakufaniri kufungidzirwa zvakanyanya, uye nyaya inokosha inofanira kugadziriswa ndeyokuvandudza kushanduka kwemotokari kune kwete-sinusoidal magetsi. Nzira dzacho dzinowanzova dzinotevera:

1) Deredza stator uye rotor kuramba zvakanyanya sezvinobvira.

Kuderedza kupikisa kwe stator kunogona kuderedza kurasikirwa kwakakosha kwemhangura kubhadharira kuwedzera kwekurasikirwa kwemhangura kunokonzerwa ne-high-order harmonics.

2) Kuti udzivise yakakwirira-yakarongeka harmonics mune yazvino, inductance yemotokari inoda kuwedzerwa zvakakodzera. Nekudaro, iyo yakakura iyo rotor slot leakage reactance, iyo yakakura ganda mhedzisiro, uye yakakwirira harmonic mhangura kurasikirwa. Naizvozvo, saizi yemotor leakage reactance inofanirwa kufunga nezve kurongeka kweiyo impedance yekufananidza mukati meiyo yese yekumhanyisa mutemo renji.
3) Iyo huru magineti yedunhu yeinosiyana frequency mota inowanzo gadzirwa kuti ive isina unsaturated. Kutanga, inofungidzirwa kuti yakakwirira-yakarongeka harmonics ichadzamisa saturation yemagnetic circuit. Chechipiri, inofungidzirwa kuti pane yakaderera frequency, iyo inobuda voltage ye inverter inofanirwa kuwedzerwa zvakakodzera kuitira kuti iwedzere inobuda torque.

2. Magadzirirwo ekugadzira

Paunenge uchigadzira chimiro, chinonyanya kutariswa iko kukanganisa kweasiri-sinusoidal magetsi emagetsi maitiro pane insulation chimiro, vibration, ruzha kutonhora nzira uye zvimwe zvinhu zveiyo inosiyana frequency mota. Kazhinji, zvinhu zvinotevera zvinofanira kutariswa kune:

1) Insulation level, kazhinji F nhanho kana yepamusoro, simbisa kuvharirwa pasi uye simba rekudzivirira rewaya inotendeuka, uye kunyanya funga kugona kweiyo insulation kumire simba remhepo.

2) Nokutivibration uye ruzha matambudziko emota, kuomarara kwezvikamu zvemotokari uye zvese zvinofanirwa kutariswa zvizere, uye mafambiro ayo echisikigo anofanirwa kuwedzerwa zvakanyanya sezvinobvira kudzivirira resonance neimwe simba wave.

3) Kutonhodza nzira: Kazhinji, kumanikidzirwa kutonhora kwemhepo kunogamuchirwa, kureva kuti, iyo huru mota inotonhorera fan inofambiswa nemota yakazvimirira.

4) Matanho ekudzivirira shaft ikozvino, inotakura insulation matanho anofanirwa kutorwa kune mota dzine huwandu hunodarika 160KW. Kunyanya, zviri nyore kugadzira magineti wedunhu asymmetry uye shaft ikozvino. Kana iyo yazvino inogadzirwa nezvimwe zvakakwirira-frequency zvikamu zvakabatanidzwa, shaft ikozvino inozowedzera zvakanyanya, zvichikonzera kutakura kukuvara, saka matanho ekudzivirira anowanzo kutorwa.

5) Nokutiinogara iine simba chinja frequency motas, kana kumhanya kuchipfuura 3000/min, high-temperature resistant girisi inofanira kushandiswa kubhadhara tembiricha yekuwedzera kwekutakura.

Variable frequency motors vanogona kushanda kwenguva yakareba mune inosiyana frequency renji ye0.1HZ--130HZ.
Mamota akajairika anogona kumhanya kwenguva yakareba mumhando ye: 20--65hz yemapango maviri.

25--75hz yemapango mana.

30--85hz yemapango matanhatu.

35--100hz yemapango masere.