Mhepo iri padivi reDC yesimba rezuva inowedzerwa kusvika ku1500V, uye kukwidziridzwa uye kushandiswa kwemasero mazana maviri negumi kunoisa pamberi pepamusoro zvinodiwa zvekuchengetedzwa kwemagetsi kwese photovoltaic system.Mushure mokunge magetsi emagetsi awedzerwa, anokonzera matambudziko kune kuvhara uye kuchengetedzwa kwegadziriro, uye inowedzera njodzi yekuputsika kwekudzivirira kwezvikamu, inverter wiring, uye matunhu emukati.Izvi zvinoda matanho ekudzivirira kuti aparadzanise zvikanganiso panguva uye inoshanda zvikanganiso zvinowirirana zvinoitika.
Kuti zvienderane nezvikamu nekuwedzera kwemazuva ano, vanogadzira inverter vanowedzera kushandiswa ikozvino kwetambo kubva ku15A kusvika ku20A. Pakugadzirisa dambudziko re 20A yekupinda ikozvino, inverter mugadziri akagadzirisa mukati mekugadzirwa kweMPPT uye akawedzera tambo yekuwana kukwanisa kwe. MPPT kune vatatu kana kupfuura.Panyaya yekukanganisa, tambo inogona kuva nedambudziko rekudzokera shure ikozvino.Kugadzirisa dambudziko iri, DC switch ine basa re "yakangwara DC shutdown" yabuda sezvinodiwa nenguva.
01 Musiyano uripo pakati pechinyakare yekuzviparadzanisa switch uye yakangwara DC switch
Chekutanga, iyo yechinyakare DC yekuparadzanisa switch inogona kutyora mukati meiyo yakayerwa ikozvino, senge zita rekuti 15A, uye inogona kutyora yazvino pasi peyakatemerwa voltage ye15A uye mukati.Kunyangwe mugadziri achamaka kuwanda kwekutyora kwekugona kweiyo isolate switch. , kazhinji haigoni kuputsa pfupi-circuit current.
Musiyano mukuru pakati pekuchinja kwekuzviparadzanisa uye muparadzi wedunhu ndewekuti muparadzi wedunhu ane kugona kutyora iyo pfupi-circuit ikozvino, uye iyo pfupi-yedunhu ikozvino kana paine chikanganiso chakakura kwazvo kupfuura yakatarwa ikozvino yedunhu. ;Sezvo iyo pfupi-yedunhu ikozvino ye photovoltaic DC side inowanzoita 1.2 nguva yakayerwa ikozvino, mamwe ega ega switch kana mitoro inochinja inogona zvakare kutyora pfupi-circuit ikozvino yeDC side.
Parizvino, iyo smart DC switch inoshandiswa neiyo inverter, kunze kwekusangana neIEC60947-3 certification, zvakare inosangana neanopfuura overcurrent kupwanya kweimwe chiyero, iyo inogona kutyora kukanganisa kwepamusoro mukati mezita renguva pfupi-yedunhu renji, zvinobudirira Iyo inogadzirisa dambudziko retambo ikozvino backfeeding.Panguva imwecheteyo, iyo smart DC switch inosanganiswa neiyo DSP yeinverter, kuitira kuti rwendo unit yekuchinja inogona kunyatso uye nekukurumidza kuona mabasa akadai sekudzivirira kwepamusoro uye kuchengetedzwa kwedunhu pfupi.
Yemagetsi schematic dhizaini ye smart DC switch
02 Zuva rekugadzira dhizaini rinoda kuti kana nhamba yekupinza nzira dzetambo dziri pasi peMPPT imwe neimwe iri ≥3, fuse kudzivirirwa kunofanira kugadziriswa padivi reDC.Kubatsira kwekushandisa tambo inverters ndiko kushandiswa kwe-no-fuse design kuderedza. basa rekushanda nekugadzirisa rekugara kuchinjwa kwemafuse padivi reDC.Mainverters anoshandisa akangwara DC switch pane ma fuse.MPPT inogona kuisa mapoka matatu etambo.Pasi pemamiriro ezvinhu akanyanya kukanganisa, pachava nengozi yekuti ikozvino yemapoka e2 emaketani achayerera achidzokera kune 1 boka retambo.Panguva ino, iyo yakangwara DC switch inovhura iyo DC switch kuburikidza nekuburitswa kweshunt uye kuibvisa nenguva.dunhu kuitira kuti kukurumidza kubviswa kwezvikanganiso.
Schematic diagiramu yeMPPT tambo ikozvino backfeeding
Iyo shunt kuburitswa inongove coil inorovera pamwe nemudziyo wekutsika, iyo inoshandisa voltage yakataurwa kune shunt inorovera coil, uye kuburikidza nezviito zvakaita semagetsi ekudhonza-mukati, iyo DC switch actuator inogumburwa kuvhura bhureki, uye shunt inokanganisa Iyo. inowanzo shandiswa kuremote automatic power-off control.Kana iyo smart DC switch yagadziriswa paGoodWe inverter, DC switch inogona kubhinywa yovhurwa kuburikidza neinverter DSP kuti ibvise DC switch circuit.
Kune ma inverters anoshandisa shunt rwendo kudzivirira basa, zvinotanga kudikanwa kuti ive nechokwadi chekuti dunhu rekutonga reiyo shunt coil rinowana simba rekutonga risati rwendo rwekudzivirira basa redunhu guru rinogona kuvimbiswa.
03 Tarisiro yekushandisa yehungwaru DC switch
Sezvo kuchengetedzwa kwe photovoltaic DC side zvishoma nezvishoma kunowedzera kutariswa, mabasa ekuchengetedza akadai seAFCI neRSD akataurwa zvakanyanya uye munguva pfupi yapfuura.Smart DC switch inokosha zvakaenzana.Kana kukanganisa kukaitika, iyo smart DC switch inogona kunyatso kushandisa kuremote control uye yakazara kudzora mantiki ye smart switch.Mushure meiyo AFCI kana RSD chiito, iyo DSP inotumira chiratidzo cherwendo kuti iite otomatiki iyo DC DC yekuzviparadzanisa switch.Gadzira nzvimbo yekuzorora yakajeka kuti uve nechokwadi chekuchengetedzwa kwevashandi vekuchengetedza.Kana iyo DC switch ichityora hombe ikozvino, ichakanganisa hupenyu hwemagetsi hwekuchinja.Paunenge uchishandisa yakangwara DC switch, kutyora kunopedza hupenyu hwemuchina weiyo DC switch, iyo inochengetedza hupenyu hwemagetsi uye arc yekudzima kugona kweiyo DC switch.
Iko kushandiswa kweakangwara DC switch zvakare kunoita kuti zvikwanise kuvimbika "imwe-kiyi kuvharika" kweinoshandura michina mumamiriro epamba; Chechipiri, kuburikidza nedhizaini yeDSP yekudzora kuvharika, kana emergency ikaitika, iyo DC switch ye inverter inogona kukurumidza uye. kunyatsovhara kuburikidza neiyo DSP chiratidzo, ichigadzira yakavimbika kugadzirisa yekubvisa poindi.
04 Pfupiso
Iko kushandiswa kwehungwaru DC switch inonyanya kugadzirisa dambudziko rekudzivirira rekudzokera shure, asi kana basa rekufamba kure rinogona kushandiswa kune mamwe akaparadzirwa uye emumba mamiriro ekugadzira yakavimbika kushanda uye kuchengetedza vimbiso uye kuvandudza kuchengetedzwa kwemushandisi mumamiriro ekukurumidzira.Iko kugona kubata nekukanganisa kuchiri kuda kushandiswa uye kusimbiswa kweakangwara DC switch muindasitiri.
Nguva yekutumira: Feb-16-2023