Kwa ma motors olumikizidwa ndi ma frequency converter, kutentha kwapamwamba kwambiri kumatsimikiziridwa ndi njira zoyesera pansi pamikhalidwe yovuta kwambiri
- Kwambiri zinthu zoipa
(1) Makhalidwe a torque / liwiro
Kwa ma motors omwe amagwiritsidwa ntchito ponyamula ma torque osiyanasiyana, kutentha kwapamwamba kwambiri kumayesedwa pamphamvu kwambiri pa liwiro lalikulu kwambiri; kwa ma motors omwe amagwiritsidwa ntchito ponyamula katundu wa mzere ndi katundu wokhazikika wa torque, kutentha kwakukulu kwa pamwamba kumayesedwa osachepera ndi liwiro lalikulu; kwa ma motors omwe amagwiritsidwa ntchito ponyamula katundu wovuta, kutentha kwakukulu kwapamwamba kumayezedwa pamlingo wa inflection wa curve-torque.
(2) Kutentha kwakukulu kwapamwamba kudzayezedwa pamlingo wocheperako komanso wothamanga kwambiri pa mphamvu zonse.
(3) Kutsika kwa magetsi
Pakupanga ndi kuyitanitsa chiwembu, kutsika kwamagetsi kwa zigawo zonse kuyenera kuganiziridwa. Chifukwa chake, chidziwitso chokhudza kutsika kwamagetsi kwa ma frequency converter, fyuluta, kutsika kwamagetsi pa chingwe, kasinthidwe ka makina ndi ma frequency converter voltage input ayenera kumveka. Malangizo okonzedwa ndi wopanga molingana ndi Mutu 30 wa GB/T 3836.1-2021 "Explosive Atmospheres Part 1: General Requirement for Equipment" iyenera kupereka zidziwitso zonse zofunikira kuti zithandizire kuwerengera/kukhazikitsa kwa magwiridwe antchito.
(4) Mawonekedwe a inverter.
Kutsika kosinthira pafupipafupi kumawonjezera kutentha kwagalimoto. Zinthu zapadera zogwirira ntchito zitha kufunidwa kuti mutchule ma frequency ocheperako; ma multilevel inverters (3 kapena apamwamba) nthawi zambiri amabweretsa kuchepa kwa kutentha kwa injini.
(5) Kuzizira Kwambiri kutentha pamwamba kuyeza ndi osachepera oveteredwa otaya/kuchuluka oveteredwa ozizira ozizira kutentha; machitidwe apadera ogwirira ntchito angafunikire kuti atchule zofunikira zozizirira.
- Njira zoyesera
(1) Ma inverter odzipatulira amayenera kuyesedwa ndi inverter yomwe akufuna. Ngati voteji ya inverter ndi ma harmonic opangidwa ndi ma waveform otuluka ndi odziyimira pawokha pa ± 10% ma voliyumu olowera pomwe akusunga ma voliyumu amagetsi apano (kutengera liwiro) ndi ma voliyumu ndi ma frequency, kusintha kwamagetsi koyenera ± 10% sikuyenera kugwiritsidwa ntchito.
(2) Ma inverters ofanana Pakakhala chidziwitso chokwanira kuti mudziwe kufanana, galimotoyo imatha kuyesedwa ndi ma inverters ofanana. Nthawi zambiri, zowonjezera zotetezera zimagwiritsidwa ntchito powerengera kufanana komwe kuli koyenera. Ngati voteji ya inverter ndi ma harmonic opangidwa ndi ma waveform otuluka ndi odziyimira pawokha pa ± 10% ma voliyumu olowera pomwe akusunga ma voliyumu omwe amavotera pakali pano (kutengera liwiro) komanso kuchuluka kwa ma voltage ndi ma frequency, kusintha kwamagetsi koyenera ± 10% sikuyenera kugwiritsidwa ntchito.
(3) Sinusoidal voltage motors safunika kuyesedwa ndi inverter yofanana, koma ikhoza kuyesedwa ndi sinusoidal voteji pansi pazifukwa zonsezi: torque yomwe ikuyembekezeredwa ikufanana ndi lalikulu la liwiro; injiniyo iyenera kuyendetsedwa ndi katundu wambiri pa liwiro lovomerezeka; liwiro la injini lili pakati pa 40% ndi 100% ya liwiro lalikulu kwambiri;
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