Umuvuduko ukabije wa DC kuruhande rwingufu zizuba wongerewe kugera kuri 1500V, kandi kuzamura no gukoresha selile 210 byashyize ahagaragara ibisabwa byinshi kugirango umutekano wamashanyarazi wa sisitemu yose ifotora.Nyuma ya voltage ya sisitemu imaze kwiyongera, itera imbogamizi zo gukumira no kurinda umutekano wa sisitemu, kandi ikongerera ibyago byo gusenyuka kw’ibice, insinga za inverter, hamwe n’umuzunguruko w'imbere.Ibyo bisaba ingamba zo kurinda gutandukanya amakosa mu gihe kandi gikwiye iyo amakosa akwiranye.
Kugirango uhuze nibice hamwe niyongerekana ryubu, abakora inverter bongera ibyinjira byumugozi kuva kuri 15A kugeza kuri 20A.Iyo bakemuye ikibazo cya 20A yinjiza, uwakoze inverter yahinduye igishushanyo mbonera cya MPPT kandi yongerera ubushobozi bwo kugera kumurongo MPPT kugeza kuri bitatu cyangwa birenga.Mu gihe habaye amakosa, umugozi urashobora kugira ikibazo cyo kugaburira ubu.Kugira ngo iki kibazo gikemuke, DC ihindura imikorere ya "ubwenge bwa DC guhagarika" byagaragaye nkuko ibihe bisaba.
01 Itandukaniro hagati ya gakondo yo kwigunga no guhinduranya DC
Mbere ya byose, uburyo bwa DC bwitandukanya busanzwe burashobora gucika mumurongo wagenwe, nka nominal 15A, noneho irashobora kumena umuyaga munsi yumubyigano wa 15A no imbere.Nubwo uwabikoze azagaragaza ubushobozi bwo kumena imitwaro irenze urugero. , mubisanzwe ntishobora kumena imiyoboro ngufi.
Itandukaniro rinini hagati yimikorere itandukanya hamwe nuwumuzunguruko wumuzunguruko nuko icyuma cyumuzunguruko gifite ubushobozi bwo guca umuyagankuba mugufi, kandi umuyoboro mugari mugihe habaye ikosa urenze cyane ugereranije numuyoboro wagenwe kumashanyarazi. ;Kubera ko umuyoboro mugufi wumurongo wamafoto ya DC mubusanzwe wikubye inshuro 1,2 igipimo cyagenwe, bamwe bahinduranya ibintu cyangwa bahindura imitwaro birashobora kandi kumena imiyoboro migufi yumuzingi kuruhande rwa DC.
Kugeza ubu, ibyuma bya DC byubwenge bikoreshwa na inverter, usibye kuba wujuje ibyemezo bya IEC60947-3, byujuje kandi ubushobozi bwo kumeneka birenze ubushobozi runaka, bushobora kuvanaho amakosa arenze urugero mugihe gito cyumuzunguruko, ikemura ikibazo cyumugozi ugezweho.Mugihe kimwe, ubwenge bwa DC bwubwenge buhujwe na DSP ya inverter, kugirango igice cyurugendo rwa switch gishobora kumenya neza kandi vuba imirimo nko kurinda birenze urugero no kurinda imiyoboro ngufi.
Igishushanyo mbonera cyamashanyarazi ya DC yubwenge
02 Igishushanyo mbonera cyizuba gisaba ko mugihe umubare wimiyoboro yinjiza yimigozi munsi ya buri MPPT ari ≥3, kurinda fuse bigomba gushyirwaho kuruhande rwa DC.Icyiza cyo gukoresha inverteri yimigozi ni ugukoresha igishushanyo mbonera kugirango ugabanye ibikorwa no kubungabunga imirimo yo gusimbuza kenshi fus kuruhande rwa DC.Inverters ikoresha DC ifite ubwenge aho gukoresha fus.MPPT irashobora kwinjiza amatsinda 3 yimirongo.Mugihe gikabije cyamakosa, hazabaho ibyago ko amatsinda 2 yimigozi azasubira mumatsinda 1 yimigozi.Muri iki gihe, ubwenge bwa DC bwubwenge buzafungura DC ihindura binyuze muri shunt irekura hanyuma uyihagarike mugihe.umuzenguruko kugirango ukureho vuba amakosa.
Igishushanyo mbonera cya MPPT umugozi ugezweho
Kurekura shunt mubyukuri ni igiceri cyo gutembera hiyongereyeho igikoresho cyo kugendagenda, gikoresha voltage yihariye kuri shitingi ya shunt, kandi binyuze mubikorwa nka electromagnetic gukurura, imashini ya DC ihinduranya kugirango ifungure feri, na shunt ikandagira ikoreshwa kenshi mugucunga ibyuma byikora byikora.Iyo DC yubwenge ya DC igizwe na inverter ya GoodWe, DC irashobora gukandagira no gukingurwa binyuze muri inverter DSP kugirango ihagarike imiyoboro ya DC.
Kuri inverter ukoresheje ibikorwa byo kurinda urugendo shunt, birakenewe mbere na mbere kwemeza ko umuzenguruko wa shitingi ya shunt ubona imbaraga zo kugenzura mbere yuko ibikorwa byo kurinda ingendo byumuzunguruko bishobora kwizerwa.
03 Gusaba ibyifuzo byubwenge bwa DC
Nkuko umutekano wuruhande rwamafoto ya DC ugenda urushaho kwitabwaho, ibikorwa byumutekano nka AFCI na RSD byavuzwe cyane kandi vuba aha. Guhindura ibice bya DC nabyo ni ngombwa.Iyo habaye ikosa, DC ifite ubwenge irashobora gukoresha neza igenzura rya kure hamwe na logique yo kugenzura muri rusange.Nyuma yibikorwa bya AFCI cyangwa RSD, DSP izohereza ikimenyetso cyurugendo kugirango ihite igenda DC DC yo kwigunga.Shiraho aho uhagarara kugirango umenye umutekano w'abakozi bashinzwe kubungabunga.Iyo DC ihindura amashanyarazi manini, bizagira ingaruka kumashanyarazi.Iyo ukoresheje DC ifite ubwenge bwubwenge, kumeneka bitwara gusa ubuzima bwubukanishi bwa DC, burinda neza ubuzima bwamashanyarazi nubushobozi bwo kuzimya arc ya DC.
Gukoresha ibyuma bya DC byubwenge nabyo bituma bishoboka rwose kwizerwa "urufunguzo rumwe rwo gufunga" ibikoresho bya inverteri murugo ly Icya kabiri, binyuze mugushushanya DSP igenzura, mugihe habaye ikibazo cyihutirwa, DC ihindura inverter irashobora kwihuta kandi kuzimya neza ukoresheje ikimenyetso cya DSP, ugakora ingingo yizewe yo kubungabunga.
04 Incamake
Gukoresha ibyuma bya DC byubwenge bikemura cyane cyane ikibazo cyokwirinda kugaburira ubu, ariko niba imikorere yo gutembera kure ishobora gukoreshwa mubindi byagabanijwe kandi murugo kugirango habeho ibikorwa byizewe no kubungabunga no guteza imbere umutekano wabakoresha mugihe cyihutirwa.Ubushobozi bwo guhangana namakosa buracyasaba gusaba no kugenzura ibintu byahinduwe na DC byinganda.
Igihe cyo kohereza: Gashyantare-16-2023