Harmonic control scheme kwa chowotcha kutentha

ng’anjo yosungunuka: ndi chipangizo chopangira mphamvu chomwe chimasintha ma frequency a 50HZ osinthira ma frequency apakati (300HZ pamwamba mpaka 1000HZ), omwe amasintha magawo atatu amagetsi osinthira ma frequency kukhala apano achindunji pambuyo pokonzanso, kenako ndikusintha ma frequency olunjika kukhala osinthika apakatikati. ma frequency apano kuti apereke Mphamvu yapakatikati yosinthira ma frequency omwe ikuyenda kudzera pa capacitor ndipo coil induction imapanga mizere yamphamvu yamaginito yamphamvu mu koyilo yolowera, ndikudula zitsulo zomwe zili mu koyilo yolowera, zomwe zimapanga eddy pano muzitsulo. zakuthupi.

1. Mfundo yogwirira ntchito ya ng’anjo yosungunula induction

Ng’anjo yosungunula induction imapangidwa makamaka ndi magetsi, coil induction ndi crucible yopangidwa ndi zinthu zokanira mu coil induction. The crucible imakhala ndi zitsulo zolipiritsa, zomwe zimafanana ndi kupendekera kwachiwiri kwa transformer. Koyilo yolowera ikalumikizidwa ndi magetsi a AC, gawo losinthira maginito limapangidwa mu koyilo yolowera. Popeza kuti chiwongoladzanjacho chimapanga chipika chotsekedwa, kutsekemera kwachiwiri kumadziwika ndi kutembenuka kamodzi kokha ndipo kumatsekedwa. Chifukwa chake, kupangika kwaposachedwa kumapangidwa mumalipiro nthawi imodzi, ndipo pamene mphamvu yoyendetsedwa ikudutsa pamtengowo, ndalamazo zimatenthedwa kuti zilimbikitse kusungunuka kwake.

Mng’anjo yosungunula induction imagwiritsa ntchito mphamvu yamagetsi yapakati kuti ikhazikitse maginito apakati pafupipafupi, omwe amapanga mafunde a eddy mkati mwazinthu za ferromagnetic ndikupanga kutentha, kuti akwaniritse cholinga chotenthetsera zinthuzo. Ng’anjo yosungunula induction imagwiritsa ntchito mphamvu yapakati ya 200-2500Hz yapakatikati pakuwotcha, kusungunula ndi kusunga kutentha. Ng’anjo yosungunula induction imagwiritsidwa ntchito makamaka kusungunula chitsulo cha kaboni, chitsulo cha aloyi, chitsulo chapadera, ndipo itha kugwiritsidwanso ntchito kusungunula ndi kutenthetsa zitsulo zopanda chitsulo monga mkuwa ndi aluminiyamu. Zida ndi zazing’ono mu kukula. , Kulemera kwa kuwala, kuchita bwino kwambiri, kugwiritsa ntchito mphamvu zochepa, kusungunuka mofulumira ndi kutentha, kuwongolera mosavuta kutentha kwa ng’anjo, komanso kupanga bwino kwambiri.

2. Makhalidwe a Harmonic opangidwa ndi ng’anjo yosungunula induction

Kawirikawiri, ng’anjo zosungunula za 6-pulse induction zimatulutsa 5th ndi 7th harmonics; pazida zosinthira 12-pulse, makamaka zimapanga 5th, 11th, and 13th characteristic harmonics. Nthawi zonse, zida zosinthira zing’onozing’ono zimagwiritsa ntchito 6 pulses, ndipo zazikulu zimagwiritsa ntchito 12 pulses. Mwachitsanzo, mbali yachiwiri yachiwiri ya thiransifoma ya ng’anjo imalumikizidwa mumtundu wa Y/△ kuti ikwaniritse kusintha kwa magawo 30; kapena mbali yamagetsi yamagetsi yamagetsi awiri a ng’anjo yamoto imatenga makona atatu owonjezera kapena zigzag Phase-stifting miyeso monga kugwirizana kwamtundu ndi kulumikiza pakona yachiwiri yachiwiri ya nyenyezi kumapanga 24-pulse intermediate frequency power supply kuti achepetse mphamvu ya ma harmonics pa gridi yamagetsi.

Chachitatu, zoopsa za harmonic

Ng’anjo yosungunula induction imapanga ma harmonics ambiri akagwiritsidwa ntchito, zomwe zimayambitsa kuwonongeka kwakukulu mu gridi yamagetsi. Ma Harmonics amachepetsa mphamvu yotumizira ndi kugwiritsa ntchito mphamvu zamagetsi, amachititsa kuti zida zamagetsi zitenthedwe, zimatulutsa kugwedezeka ndi phokoso, ndikupanga kukalamba kwake, kuchepetsa moyo wautumiki, ngakhale kusagwira ntchito kapena kuwotcha; ma harmonics amatha kuyambitsa kumveka kofanana kwapafupi kapena kumveka kotsatizana mumagetsi. Limbikitsani zomwe zili mu harmonic, zomwe zimapangitsa kuti zida zolipirira capacitor ndi zida zina zipse. Ngati chiwongola dzanja chokhazikika sichingagwiritsidwe ntchito, chindapusa chamagetsi chokhazikika chidzachitika, zomwe zimapangitsa kuti ndalama zamagetsi ziwonjezeke. Ma Harmonics amathanso kuyambitsa kusokonekera kwa chitetezo cha relay ndi zida zodziwikiratu, zomwe zimapangitsa chisokonezo pakuyezera mphamvu yamagetsi. Kwa kunja kwa dongosolo lamagetsi, ma harmonics adzasokoneza kwambiri zipangizo zoyankhulirana ndi zipangizo zamagetsi. Chifukwa chake, kuwongolera mphamvu zama ng’anjo osungunula ma induction kwakhala cholinga chachikulu choyankhira.

Chachinayi, chowongolera chosungunula ng’anjo yamoto

LBAPF-ZP mndandanda wa zosefera zapadera za zida zapakatikati ndizoyenera makamaka kuyika makina osungunula ng’anjo okhala ndi zinthu zambiri zolumikizana. Ikhoza kuthetsa kutentha ndi kutentha kwa kachitidwe komwe katunduyo ali, kuwonjezeka kwa phokoso, kulephera kwa kusintha kwa malipiro a capacitor, ndi zigawo za dera Zowonongeka ndi zovuta zomwe zimachitika chifukwa cha mafunde ochuluka a harmonic monga kuwonongeka.

Mndandanda wa LBAPF-ZP wa zosefera zapadera za zida zapakati pafupipafupi zimayikidwa kumbuyo kwa chiwongola dzanja champhamvu komanso kutsogolo kwa katundu. Kusefa kwa Harmonic kwa katundu wakumbuyo kumafika 90%.