Ojaija mota dzakagadzirwa zvinoenderana neanogara frequency uye anogara ari voltage, uye haakwanise kuzadzisa zvizere zvinodikanwa zve frequency converter yekumhanyisa regulation, saka haagone kushandiswa se frequency conversion motors.
Musiyano uripo pakati peinosiyana frequency mota uye yakajairwa mota inoratidzwa zvakanyanya mune zvinotevera zvinhu zviviri:
Chekutanga, mota dzakajairwa dzinogona kungoshanda kwenguva yakareba padyo neiyo frequency yemagetsi, nepo ma frequency motors anogona kushanda kwenguva yakareba pasi pemamiriro akanyanya kukwirira kana kudzika pane frequency yemagetsi; semuenzaniso, kuwanda kwesimba munyika yedu ndeye 50Hz. , kana mota yakajairika iri pa5Hz kwenguva yakareba, ichakurumidza kukundikana kana kutokuvadzwa; uye kutaridzika kweiyo inosiyana frequency mota inogadzirisa kushomeka uku kweyakajairika mota;
Chechipiri, iwo ekutonhodza masisitimu eakajairwa mota uye akasiyana frequency motors akasiyana.Iyo yekutonhodza sisitimu yeyakajairika mota ine hukama zvakanyanya nekumhanya kwekutenderera. Mune mamwe mazwi, iyo inokurumidza kutenderera mota, zviri nani kutonhora system, uye inononoka mota inotenderera, zviri nani kutonhora mhedzisiro, nepo inochinja frequency mota haina dambudziko iri.
Mushure mekuwedzera frequency converter kune yakajairwa mota, iyo frequency yekushandura mashandiro inogona kuitika, asi haisi iyo chaiyo frequency kushandura mota. Kana ikashanda pasi peiyo isiri-simba frequency state kwenguva yakareba, mota inogona kukuvara.
01 Iyo pesvedzero ye frequency converter pamota iri kunyanya mukubudirira uye kukwira kwekushisa kwemota
Iyo inverter inogona kuburitsa mazinga akasiyana eharmonic voltage uye yazvino panguva yekushanda, kuitira kuti mota inomhanya pasi peiyo isiri-sinusoidal voltage uye yazvino. , chinonyanya kukosha kurasikirwa nerotor mhangura, kurasikirwa uku kuchaita kuti mota iwedzere kupisa, kuderedza kushanda zvakanaka, kuderedza simba rekubuda, uye kukwira kwekushisa kwemamotors akajairika kunowanzo wedzera ne10% -20%.
02 Simba rekudzivirira remota
Iyo inotakura frequency ye frequency converter inotangira kubva kune akati wandei kusvika kune anopfuura gumi kilohertz, kuitira kuti stator mhepo yemotor ikwanise kumira yakakwira voltage kukwira, izvo zvakaenzana nekuisa yakakwira impulse voltage kumota, izvo zvinoita kuti inter-turn insulation yemota inomira muyedzo wakakomba. .
03 Harmonic electromagnetic ruzha uye vibration
Kana mota yakajairika ichifambiswa neinoshandura frequency, iyo vibration uye ruzha rwunokonzerwa nemagetsi, mechanic, ventilation uye zvimwe zvinhu zvinozonyanya kuoma. Iwo maharmonics ari mune inosiyana frequency magetsi emagetsi anokanganisa neakasikwa nzvimbo harmonics ye electromagnetic chikamu chemota kuumba akasiyana emagetsi emagetsi ekusimudzira masimba, nekudaro achiwedzera ruzha. Nekuda kwehupamhi hwekushanda frequency renji yemota uye kuwanda kwekutenderera kumhanya kushanduka, zvakaoma kune ma frequency eakasiyana emagetsi emagetsi simba mafungu kudzivirira echisikigo vibration frequency yenhengo yega yega yemotor.
04 Matambudziko ekutonhorera panguva yakaderera rpm
Kana kuwanda kwemagetsi kuderera, kurasikirwa kunokonzerwa ne-high-order harmonics mumagetsi makuru; kechipiri, kana kumhanya kwemota kuchidzikira, mhepo inotonhorera inodzikira yakananga kune cube yekumhanya, zvichikonzera kupisa kwemota kusabviswa uye tembiricha ichikwira zvakanyanya. kuwedzera, zvakaoma kuwana nguva dzose torque kubuda.
05Tichitarisa mamiriro ari pamusoro, iyo frequency inoshandura mota inotora inotevera dhizaini
Deredza kupikisa kwe stator uye rotor zvakanyanya sezvinobvira uye kuderedza kurasikirwa kwemhangura yevheji yakakosha kugadzirisa kuwedzera kwekurasikirwa kwemhangura kunokonzerwa nepamusoro-soro.
Iyo huru magineti haina kuzara, imwe ndeye kufunga kuti yakakwirira harmonics ichadzamisa kuzara kweiyo magineti wedunhu, uye imwe ndeyekufunga kuti iyo inobuda voltage yeiyo inverter inogona kukwidziridzwa zvakakodzera kuitira kuti iwedzere inobuda torque yakaderera. ma frequency.
Iyo yekugadzira dhizaini inonyanya kuvandudza nhanho yekudzivirira; iyo vibration uye ruzha matambudziko emota anotariswa zvizere; nzira yekutonhodza inotora kutonhora kwemhepo yekumanikidza, kureva kuti, mota huru yekutonhodza fan inotora yakazvimiririra mota drive modhi, uye basa reiyo yekumanikidza kutonhora fan ndere kuona kuti mota inomhanya yakaderera. kutonhora pasi.
Iyo coil yakagovaniswa capacitance yeinosiyana frequency mota idiki, uye kuramba kwesilicon simbi sheet yakakura, kuitira kuti pesvedzero yeakakwira-frequency pulses pamota idiki, uye inductance kusefa mhedzisiro yemota iri nani.
Ojaija mota, kureva, simba frequency motors, inongoda kufunga nezvekutanga maitiro uye mamiriro ekushanda eimwe poindi yemagetsi frequency (nhamba yeruzhinji: electromechanical contacts), uyezve kugadzira mota; nepo ma frequency motors anofanirwa kufunga nezvekutanga maitiro uye mamiriro ekushanda emapoinzi ese mukati meiyo frequency yekushandura renji, wobva wagadzira mota.
Kuti ujairane nePWM hupamhi modulated wave analog sinusoidal alternating ikozvino kubuda neinverter, iyo ine yakawanda maharmonics, basa reiyo yakanyatsogadzirwa inosiyana frequency mota inogona kunyatso kunzwisiswa se reactor pamwe neyakajairika mota.
01 Musiyano uripo pakati peyakajairwa mota uye inosiyana frequency mota chimiro
1. Higher insulation zvinodiwa
Kazhinji, giredhi rekudzivirira reiyo frequency conversion mota iF kana yakakwira, uye iyo yekuvharisa pasi uye simba rekudzivirira rekutendeuka rinofanirwa kusimbiswa, kunyanya kugona kweiyo insulation yekumira nemhepo inoputika.
2. Kudengenyeka uye ruzha zvinodikanwa zveinochinja frequency mota dzakakwirira
Iyo frequency inoshandura mota inofanirwa kunyatso funga kuomarara kwezvikamu zvemota uye yese, uye edza kuwedzera iyo yakasarudzika frequency kudzivirira resonance nega rimwe nerimwe simba wave.
3. Nzira yekutonhoresa yemotor frequency inosiyana
Iyo frequency yekushandura mota inowanzo tora yekumanikidza kufefetera kutonhora, ndiko kuti, iyo huru mota inotonhorera fan inofambiswa nemota yakazvimirira.
4. Zvido zvakasiyana zvekudzivirira matanho
Kutakura nhanho dzekudzivirira dzinofanirwa kutorwa kune akasiyana frequency motors ane huwandu hunodarika 160kW.Chikonzero chikuru ndechekuti zviri nyore kugadzira asymmetrical magineti wedunhu, uye zvakare inoburitsa shaft ikozvino. Kana mafungu anogadzirwa nemamwe ma-high-frequency components akashanda pamwechete, shaft yazvino inozowedzera zvakanyanya, zvichikonzera kutakura kukuvara, saka matanho ekudzivirira anowanzo kutorwa.Kune inogara ichichinja magetsi frequency mota, kana kumhanya kuchipfuura 3000/min, yakakosha girisi ine yakanyanya tembiricha kuramba inofanira kushandiswa kubhadhara tembiricha yekukwira kweberero.
5. Zvirongwa zvekutonhodza zvakasiyana
Iyo inochinja frequency mota yekutonhora fan inopihwa simba neyakazvimiririra magetsi ekupa kuti ive nechokwadi chinoramba chichitonhora.
02 Musiyano uripo pakati peyakajairwa mota uye inosiyana frequency mota dhizaini
1. Electromagnetic Design
Kune akajairwa asynchronous motors, iwo makuru ekuita ma paramita anoonekwa mudhizaini ndeyekuremedza huwandu, kutanga kuita, kushanda nesimba uye simba chinhu.Iyo inoshanduka frequency mota, nekuti iyo yakakosha slip inopesana yakaenzana neiyo simba frequency, inogona kutangwa zvakananga kana yakakosha slip iri pedyo ne 1. Naizvozvo, iyo yakawandisa simba uye yekutanga kushanda haidi kutariswa zvakanyanya, asi kiyi. dambudziko rinogadziriswa ndere nzira yekuvandudza mota mbiri. Kugadzirisa kune zvisiri-sinusoidal magetsi emagetsi.
2. Magadzirirwo Akaitwa
Paunenge uchigadzira chimiro, zvinodikanwa zvakare kufunga nezve pesvedzero yeasiri-sinusoidal magetsi emagetsi maitiro pane insulation chimiro, vibration, uye ruzha kutonhora nzira dzeiyo inosiyana frequency mota.
Nguva yekutumira: Oct-24-2022