Kwiimoto eziqhagamshelwe kwii-frequency converters, ubushushu obuphezulu bomphezulu buya kumiselwa ngeendlela zovavanyo phantsi kwezona meko zingathandekiyo
- Uninzi lweemeko ezingathandekiyo
(1) Iimpawu zeTorque / isantya
Kwiimoto ezisetyenziselwa imithwalo ye-torque eguquguqukayo, ubuninzi bobushushu bomphezulu buya kulinganiswa kumandla aphezulu kwisantya esiphezulu esilinganisiweyo; kwiinjini ezisetyenziselwa imithwalo yemigca kunye nemithwalo ye-torque engaguqukiyo, ubuninzi bobushushu bomphezulu buya kulinganiswa ubuncinane kunye nesantya esiphezulu; kwiinjini ezisetyenziselwa imithwalo enzima, ubuninzi bobushushu bomphezulu buya kulinganiswa ubuncinane kwindawo ye-inflection ye-speed-torque curve.
(2) Ubuninzi bobushushu bomphezulu buya kulinganiswa ngesantya esisezantsi kunye nesona siphezulu kumandla angaguqukiyo.
(3) Ukuhla kwamandla ombane
Ngethuba loyilo kunye nokugunyaziswa kweskimu, ukuhla kwamandla ombane kuzo zonke izinto kufuneka kuthathelwe ingqalelo. Ke ngoko, ulwazi malunga nokuhla kwamandla ombane kwisiguquli sefrikhwensi, isihluzi, ukuhla kwamandla ombane ecaleni kwentambo, ulungelelwaniso lwenkqubo kunye nokufakwa kwesixhobo sokuguqula amaza kufuneka kuqondwe. Imiyalelo elungiselelwe ngumenzi ngokuhambelana neSahluko 30 se-GB / T 3836.1-2021 "I-Atmospheres Explosive Atmospheres Icandelo le-1: IiMfuno eziPhambili kwiZixhobo" kufuneka zinike lonke ulwazi oluyimfuneko ukulungiselela ukubala / ukusetwa koluhlu lokusebenza.
(4) Iimpawu zemveliso ye-inverter.
Iifrikhwensi zokutshintsha okuphantsi zikholisa ukonyusa ubushushu bemoto. Iimeko ezikhethekileyo zokusebenza zinokufuneka ukuba zichaze ubuncinci bokutshintsha amaza; ii-inverters ze-multilevel (3 okanye ngaphezulu) ngokubanzi zikhokelela ekunciphiseni ukufudumala kwemoto.
(5) Ukupholisa Ubona bushushu bomphezulu bulinganiswe ngobuncinane bokuqukuqela komlinganiselo/obona bushushu bomlinganiselo wesipholisi; iimeko zokusebenza ezizodwa zingafuneka ukuze kucaciswe iimfuno zokupholisa.
- Iindlela zovavanyo
(1) Iimotor ze-inverter ezinikezelweyo kufuneka zivavanywe kunye ne-inverter ekujoliswe kuyo. Ukuba i-voltage ephumayo ye-inverter kunye nomxholo we-harmonic we-output voltage waveform zizimeleyo ngokusebenzayo kwii-± 10% zokutshintsha kwamandla ombane ngelixa kugcinwa i-motor elinganisiweyo yegalelo langoku (isantya esixhomekeke kwisantya) kunye ne-voltage kunye ne-frequency, umahluko oqhelekileyo we-± 10% wokufaka amandla ombane akufuneki usetyenziswe.
(2) Ii-inverters ezifanayo Xa kukho ulwazi olwaneleyo lokumisela ukufana, i-motor ingavavanywa ngee-inverters ezifanayo. Ngokuqhelekileyo, izinto ezongezelelweyo zokhuseleko zisetyenziselwa ukulinganisa ukufana njengoko kufanelekile. Ukuba i-voltage ephumayo yombane kunye nomxholo we-harmonic wefomo yombane wemveliso zizimeleyo ngokusebenzayo ku-± 10% igalelo loguquko lombane ngelixa kugcinwa umlinganiselo obekiweyo wegalelo lemoto yangoku (ixhomekeke kwisantya) kunye nomlinganiselo wombane kunye nomlinganiselo wamaza, umahluko oqhelekileyo we-± 10% wombane wegalelo akufuneki usetyenziswe.
(3) I-Sinusoidal voltage motors ayifuni ukuvavanywa nge-inverter efanayo, kodwa inokuvavanywa nge-voltage ye-sinusoidal phantsi kwazo zonke ezi meko zilandelayo: i-torque yomthwalo olindelekileyo ilingana nesikwere sesantya; i-motor kufuneka ifakwe kumthwalo ophezulu kwisantya esilinganisiweyo; isantya semoto siphakathi kwe-40% kunye ne-100% yesantya esiphezulu esilinganisiweyo;
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