Iyo yakajairika performance curve yeaxial kuyerera fan inoratidzwa mumufananidzo:
Iyo yekumanikidza curve ine hump, senge nzvimbo yekushanda munzvimbo yekurudyi yehump, iyo fan inoshanda nyika yakagadzikana;Kana iyo nzvimbo yekushanda iri munharaunda yekuruboshwe yehump, mamiriro ekushanda e fan yakaoma kugadzikana.Panguva ino, simba remhepo uye kuyerera kwemhepo kunoshanduka.Kana iyo nzvimbo yekushanda ichienda kuzasi kuruboshwe, kuyerera uye mhepo yekumanikidza ine zvakanyanya pulsation, uye inoita kuti fan yese iwedzere.Iyo fan unit inogona kukuvadzwa nekuvhiya, saka fan haibvumidzwe kushanda pasi pekuvhiya.Kuti udzivise kuvhiya kwechiitiko che fan padiki kuyerera, frequency shanduko shanduko ye fan ndiyo yekutanga sarudzo, uye kana fan yekumhanyisa shanduko isingapfuure 20%, kunyatsoita basa hakuchinje, kushandisa frequency. Shanduko yekumhanyisa mutemo inogona kuita kuti fan iri mudiki inoyerera ishande inoshanda, kwete chete haizoite kuti fan iwedzere, asi zvakare kuwedzera kushanda kunoshanda kweiyo fan range.
Iyo huru ventilator inoshandiswa nemagetsi frequency, uye vhoriyamu yemhepo inowanzogadziriswa nekushandura Angle yegidhi vane uye baffle ndiro panguva yekushanda.Naizvozvo, kushanda kwemhepo kwakadzikira, zvichikonzera kupera kwesimba uye kuwedzera mutengo wekugadzira.Uye zvakare, nekuda kweiyo yakakura dhizaini muganho weiyo huru yemhepo inofefetera, iyo huru yekufefetera yanga ichimhanya pasi pemutoro wakareruka kwenguva yakareba, uye tsvina yesimba yakakurumbira.
Kana iyo huru fan inoshandisa reactance kutanga, nguva yekutanga yakareba uye yekutanga ikozvino yakakura, iyo ine kutyisidzira kukuru kune insulation yemota, uye kunyange kupisa mota mumatambudziko akakomba.Iyo uniaxial torque phenomenon yeyakakwira voltage mota mukutanga inoita kuti fan iburitse hombe mekiniki vibration kusagadzikana, iyo inokanganisa zvakanyanya hupenyu hwesevhisi yemota, feni uye mimwe michina.
Tichifunga nezvezvikonzero zviri pamusoro apa, zviri nani kushandisafrequencyconvertrkugadzirisa huwandu hwemhepo hwemhepo huru.
The high voltagefrequencyconverter inogadzirwa naNoker Electric inotora yakamhanyisa DSP seyosiyo yekudzora, inotora hapana velocity vector control tekinoroji uye akateedzana multilevel tekinoroji yemagetsi unit.Iyo ndeye yepamusoro-yepamusoro-voltage sosi mhando frequency converter, iyo harmonic index yakaderera pane IEE519-1992 harmonic yenyika chiyero, ine yakakwira yekupinza simba chinhu uye yakanaka kubuda waveform mhando.Hapana chikonzero chekushandisa yekuisa harmonic sefa, simba chinhu muripo mudziyo uye inobuda sefa;Iko hakuna harmonic inokonzerwa nekuwedzera kupisa uye torque ripple, ruzha, kubuda dv/dt, yakajairika mode voltage uye mamwe matambudziko, unogona kushandisa yakajairwa asynchronous mota.
Zvinoenderana nemamiriro chaiwo esaiti yemushandisi, iyo bypass kabati inotora chirongwa chetirakita imwe mushandisi frequency shanduko otomatiki kutendeuka.Sezvakaratidzwa mumufananidzo uri pasi apa.Mukabati yekubypass, kune maviri akakwira voltage ekuzviparadzanisa nevamwe uye maviri vacuum contactors.Kuona kuti hapana simba rinodzoserwa kumagumo ekushandura, KM3 neKM4 zvakavharirwa magetsi.Kana K1, K3, KM1 neKM3 zvavharwa uye KM4 ikabviswa, mota inomhanya ne frequency conversion;Kana KM1 neKM3 zvadzimwa uye KM4 yakavharwa, kuwanda kwemagetsi emota kunomhanya.Panguva ino, iyo frequency converter yakaparadzaniswa kubva kune yakakwira voltage, iyo iri nyore kugadzirisa, kugadzirisa uye kugadzirisa.
Iyo bypass kabati inofanirwa kuvharirwa neyepamusoro yakakwira voltage circuit breaker DL.Kana iyo DL yakavharwa, usashandise inverter yekubuda yega switch kudzivirira arc-kudhonza uye kuve nechokwadi chekuchengetedza kwevashandisi nemidziyo.
TheMedium Voltage Variable SpeedInotyaira yanga ichimhanya zvakatsiga kubva payakaiswa mukushanda, iyo inobuda frequency, voltage uye ikozvino yakagadzikana, fan inomhanya zvakadzikama, iyo yakayerwa simba chinhu chetiweki chikamu cheiyo frequency converter ndeye 0.976, kushanda kwayo kwakakwira kupfuura 96%, iyo huwandu hwakazara hwetiweki side ikozvino harmonic iri pasi pe3%, uye inobuda ikozvino harmonic iri pasi pe4% kana yakazara yakazara.Iyo fan inomhanya nekumhanya kwakaderera pane yakayerwa kumhanya, iyo isingango chengetedza simba, inoderedza mutengo wekugadzirisa, asi zvakare inoderedza ruzha rwe fan, uye inowana yakanaka mashandiro ekuita uye hupfumi hunobatsira.
Nguva yekutumira: Kubvumbi-07-2023