Kuthamanga kwafupipafupi kusinthasintha nthawi zambiri kumatanthawuza kachitidwe ka electromechanical: kutembenuka kwafupipafupi kuwongolera kuthamanga kwagalimoto, chosinthira pafupipafupi, chowongolera chokhazikika ndi zida zina zanzeru, ma terminal actuators ndi pulogalamu yowongolera, ndi zina zambiri, zimapanga lamulo lotseguka kapena lotsekeka la AC. dongosolo.Dongosolo lowongolera liwiro lotereli likulowa m'malo mwa machitidwe owongolera liwiro lamakina ndi njira yowongolerera liwiro la DC munthawi yomwe sinachitikepo, zomwe zimakweza kwambiri kuchuluka kwa makina ochita kupanga komanso kupanga bwino, ndikupangitsa zidazo kukhala zocheperako komanso zanzeru.
Kuyang'ana kugwiritsa ntchito mphamvu kwa ma mota onse pamafakitale, pafupifupi 70% ya ma motors amagwiritsidwa ntchito ponyamula mafani ndi mapampu.Ubwino wa kupulumutsa mphamvu ndi kuchepetsa umuna kwa katundu wotero ndi wodziwikiratu: phindu lalikulu lachuma ndi zotsatira zokhazikika za chikhalidwe cha anthu .Kungotengera cholinga pamwambapa, AC galimoto pafupipafupi kutembenuka liwiro malamulo chimagwiritsidwa ntchito.Mwachitsanzo, mu inverter air conditioner, kutentha komwe kumayikidwa ndi mpweya kumatsika, ndikofunikira kuwongolera liwiro la mota kuti muchepetse ndikuchepetsa mphamvu yoyendetsa galimoto.
Kuphatikiza pa kupulumutsa mphamvu komanso kukhala kosavuta kutchuka ndikugwiritsa ntchito, ma motors asynchronous owongolera ma frequency osinthasintha ali ndi mwayi woyambira mofewa, ndipo palibe chifukwa chowunika momwe zimayambira.Vuto lokhalo lomwe liyenera kuthetsedwa ndilakuti: kusinthika kwa injini kupita ku mphamvu zopanda ma wave wave kuyenera kukonzedwa.
Frequency Converter ntchito mfundo
Ma frequency converter omwe timagwiritsa ntchito amatengera mawonekedwe a AC-DC-AC (VVVF frequency conversion kapena vector control frequency conversion).Choyamba, mphamvu yamagetsi ya AC imasinthidwa kukhala mphamvu ya DC kudzera pa chowongolera, kenako mphamvu ya DC imasinthidwa kukhala AC yokhala ndi ma frequency osinthika ndi magetsi.mphamvu yoperekera motere.Dera la ma frequency converter nthawi zambiri limapangidwa ndi magawo anayi: kukonzanso, ulalo wapakatikati wa DC, inverter ndi control.Gawo lokonzanso ndi mlatho wa magawo atatu osawongoleredwa, gawo la inverter ndi inverter ya mlatho wa IGBT wa magawo atatu, ndipo zotulutsa zake ndi mawonekedwe a PWM, ndipo ulalo wapakatikati wa DC ukusefa, kusungirako mphamvu kwa DC ndikusunga mphamvu yogwira ntchito.
Kuwongolera pafupipafupi kwakhala njira yayikulu yowongolera liwiro, yomwe ingagwiritsidwe ntchito kwambiri pakufalitsa mosasunthika m'mafakitale osiyanasiyana.Makamaka ndi kuchulukirachulukira kogwiritsa ntchito ma frequency converter m'munda wowongolera mafakitale, kugwiritsa ntchito ma injini osinthira pafupipafupi kwafalikira.Zinganenedwe kuti chifukwa chapamwamba kwa ma motors osinthika pafupipafupi mumayendedwe osinthika pafupipafupi pama motors wamba, kulikonse komwe otembenuza pafupipafupi amagwiritsidwa ntchito, ife Sikovuta kuwona chifaniziro cha injini yosinthira pafupipafupi.
Kuyesa kwa ma frequency motor nthawi zambiri kumafunika kuyendetsedwa ndi ma frequency converter.Popeza kutulutsa pafupipafupi kwa osinthira pafupipafupi kumakhala ndi mitundu yosiyanasiyana, ndipo mafunde a PWM omwe amatuluka amakhala ndi ma harmonic olemera, chosinthira chachikhalidwe ndi mita yamagetsi sichingakwaniritsenso zoyezetsa zomwe zimayesedwa.Frequency kutembenuka mphamvu analyzer ndi pafupipafupi kutembenuka mphamvu transmitter, etc.
Benchi yoyeserera yamagalimoto okhazikika ndi mtundu watsopano woyeserera womwe udakhazikitsidwa panjira yowongolera mphamvu zamagalimoto poyankha kupulumutsa mphamvu komanso kuchepetsa utsi.Benchi yoyeserera yamagalimoto yokhazikika imayimitsa ndi zida zovuta, imathandizira kudalirika kwadongosolo, imathandizira kukhazikitsa ndi kukonza zolakwika, ndikuchepetsa mtengo wamakina.
Kutembenuka pafupipafupi zinthu zapadera zamagalimoto
Kapangidwe ka kalasi B kutentha kokwera, F class insulation kupanga.Kugwiritsa ntchito zida zotchinjiriza za polima ndi kukakamiza kwa vacuum yopangira ma varnish komanso kugwiritsa ntchito mawonekedwe apadera otchingira kumapangitsa kuti magetsi opindika azitha kupirira voteji ndi mphamvu zamakina zikuyenda bwino, zomwe zimakwanira kugwira ntchito mwachangu kwagalimoto ndi kukana kwapamwamba. - pafupipafupi pakali pano komanso voteji ya inverter.Kuwonongeka kwa insulation.
The pafupipafupi kutembenuka galimoto ali mkulu bwino bwino, ndi kugwedera mlingo ndi R-level.Kulondola kwa makina a ziwalo zamakina ndipamwamba, ndipo ma bere apadera apamwamba kwambiri amagwiritsidwa ntchito, omwe amatha kuthamanga kwambiri.
Makina osinthira pafupipafupi amatengera mpweya wokakamiza komanso njira yoziziritsira kutentha, ndipo mafani onse otuluka kunja kwa axial ndi abata-chete, amoyo wautali, komanso mphepo yamphamvu.Tsimikizirani kutentha kwamoto kwagalimoto pa liwiro lililonse, ndikuzindikira kuthamanga kwambiri kapena kutsika kwanthawi yayitali.
Poyerekeza ndi mota yamtundu wanthawi zonse, ili ndi liwiro lalikulu komanso mawonekedwe apamwamba kwambiri.Mapangidwe apadera a maginito amaponderezanso mphamvu ya maginito yapamwamba kwambiri kuti ikwaniritse zizindikiro za burodibandi, kupulumutsa mphamvu komanso phokoso lochepa.Ili ndi ma torque osiyanasiyana osasinthika komanso mawonekedwe owongolera liwiro la mphamvu, kuwongolera liwiro lokhazikika, komanso palibe ma torque.
Ili ndi mawonekedwe abwino ofananira ndi ma converter osiyanasiyana pafupipafupi.Kugwirizana ndi kuwongolera vekitala, imatha kuzindikira zero-liwiro lathunthu, torque yotsika kwambiri komanso kuwongolera kolondola kwambiri, kuwongolera malo ndi kuwongolera kuyankha mwachangu.
Nthawi yotumiza: Dec-05-2023
