- 1. Voltage ndi mafananidwe apano
(1) Magetsi a magawo atatu (380V)
Kusankhidwa kwa voteji: Mphamvu yopirira ya thyristor iyenera kukhala yosachepera 1.5 voliyumu yogwira ntchito (yomwe ikuyenera kukhala pamwamba pa 600V) kuti ithane ndi mphamvu yayikulu komanso kupitilira kwanthawi kochepa.
Mawerengedwe amakono: Kuchuluka kwa magawo atatu pakalipano kumayenera kuwerengedwa kutengera mphamvu zonse (monga 48kW), ndipo zovomerezeka zomwe zimavotera panopa ndi 1.5 nthawi yeniyeni (monga 73A katundu, sankhani 125A-150A thyristor).
Kuwongolera moyenera: Njira yowongolera magawo atatu ya magawo awiri ingayambitse kuchepa kwa mphamvu ndi kusinthasintha kwapano. Ziro-woloka choyambitsa kapena gawo-shift control module iyenera kukhazikitsidwa kuti muchepetse kusokoneza kwa gridi yamagetsi.
(2) Magetsi a magawo awiri (380V)
Kusintha kwamagetsi: Magetsi a magawo awiri kwenikweni ndi gawo limodzi la 380V, ndipo bidirectional thyristor (monga BTB series) iyenera kusankhidwa, ndipo mphamvu yopirira iyeneranso kukhala pamwamba pa 600V.
Kusintha kwamakono: Magawo awiri amakono ndi apamwamba kuposa magawo atatu (monga pafupifupi 13.6A pa katundu wa 5kW), ndipo malire akuluakulu akuyenera kusankhidwa (monga pamwamba pa 30A).
2. Wiring ndi njira zoyambitsa
(1) Mawaya a magawo atatu:
Onetsetsani kuti gawo la thyristor likulumikizidwa mu mndandanda pamapeto olowera mzere wa gawo, ndipo mzere wa chizindikiro choyambitsa uyenera kukhala waufupi komanso wolekanitsidwa ndi mizere ina kuti asasokonezedwe. Ngati zoyambitsa zero-zodutsa (njira yolumikizirana yokhazikika) imagwiritsidwa ntchito, ma harmonics amatha kuchepetsedwa koma kulondola kwa malamulo amphamvu kumafunika kukhala apamwamba; pakuyambitsa kusintha kwa gawo, chidwi chiyenera kuperekedwa ku chitetezo cha voteji (du/dt), ndi mayamwidwe a resistor-capacitor (monga 0.1μF capacitor + 10Ω resistor) ayenera kukhazikitsidwa.
(2) Mawaya a magawo awiri:
Bidirectional thyristors ayenera kusiyanitsa molondola pakati pa mitengo ya T1 ndi T2, ndipo chizindikiro choyambitsa (G) chiyenera kugwirizanitsidwa ndi katundu. Ndibwino kuti mugwiritse ntchito choyambitsa optocoupler chodzipatula kuti mupewe kusokonekera.
3. Kutentha kwa kutentha ndi chitetezo
(1) Zofunikira pakuchotsa kutentha:
Pakalipano ikadutsa 5A, choyatsira chotenthetsera chiyenera kuyikidwa, ndipo mafuta otenthetsera amayenera kuyikidwa kuti azitha kulumikizana bwino. Kutentha kwa chipolopolo kuyenera kuyendetsedwa pansi pa 120 ℃, ndipo kuziziritsa kwa mpweya kuyenera kugwiritsidwa ntchito ngati kuli kofunikira.
(2) Njira zodzitetezera:
Kutetezedwa kwamagetsi ochulukirapo: ma Varistors (monga mndandanda wa MYG) amamwa ma voltage osakhalitsa.
Kutetezedwa kopitilira muyeso: fuse yothamanga mwachangu imalumikizidwa mumndandanda wa anode, ndipo ovotera pano ndi 1.25 nthawi ya thyristor.
Malire osinthira mphamvu yamagetsi: maukonde ofananira a RC (monga 0.022μF/1000V capacitor).
4. Mphamvu ndi mphamvu
Mu dongosolo la magawo atatu, kuwongolera kusintha kwa gawo kungapangitse mphamvu kuti ikhale yochepa, ndipo ma capacitor olipira amafunika kuyikidwa pambali ya transformer.
Dongosolo la magawo awiri limakonda kukhala ndi ma harmonics chifukwa cha kusalinganika kwa katundu, choncho tikulimbikitsidwa kuti titengere zero-cross trigger kapena kugawana nthawi.
5. Mfundo zina
Malingaliro osankhidwa: perekani patsogolo ma modular thyristors (monga mtundu wa Nokia), omwe amaphatikiza ntchito zoyambitsa ndi zoteteza ndikuchepetsa mawaya.
Kuyang'anira kukonza: nthawi zonse gwiritsani ntchito multimeter kuti muwone momwe mayendetsedwe a thyristor akuyendera kuti mupewe kufupi kapena kutseguka; kuletsa kugwiritsa ntchito megohmmeter kuyesa kutchinjiriza.
Ngati mukufuna kudziwa zambiri za mankhwala athu, chondeLumikizanani nafe!
Nthawi yotumiza: Jul-16-2025
