1. Kodi kuchepetsa kutentha ndi chiyani?

Derating ndi kuchepetsa kulamulidwa kwa inverter mphamvu. Pogwira ntchito bwino, ma inverters amagwira ntchito pamtunda wawo waukulu. Pamalo opangira izi, chiŵerengero chapakati pa PV voteji ndi PV panopa chimabweretsa mphamvu yaikulu. Mphamvu yayikulu kwambiri imasintha nthawi zonse kutengera milingo ya kuwala kwa dzuwa ndi kutentha kwa module ya PV.

Kutentha kumalepheretsa ma semiconductors omwe ali mu inverter kuti asatenthedwe. Kutentha kovomerezeka pazigawo zoyang'aniridwa kukufika, inverter imasuntha malo ake ogwiritsira ntchito ku mphamvu yochepa. Mphamvu imachepetsedwa pang'onopang'ono. Nthawi zina, inverter imatseka kwathunthu. Mwamsanga pamene kutentha kwa zigawo tcheru kugwera pansi pa mtengo wovuta kachiwiri, inverter idzabwerera kumalo abwino ogwirira ntchito.

Zogulitsa zonse za Renac zimagwira ntchito ndi mphamvu zonse komanso mafunde athunthu mpaka kutentha kwina, pamwamba pomwe zimatha kugwira ntchito mocheperako kuti ziteteze kuwonongeka kwa chipangizocho. Cholemba chaukadaulo ichi chikufotokozera mwachidule za kuchotsera kwa ma inverters a Renac komanso zomwe zimayambitsa kutentha komanso zomwe zingachitike kuti zipewe.

ZINDIKIRANI

Kutentha konse m'chikalatachi kumatanthauza kutentha komwe kuli kozungulira.

2. De-rating katundu wa Renac inverters

Single Phase Inverters

Mitundu yotsatirayi ya inverter imagwira ntchito ndi mphamvu zonse komanso mafunde athunthu mpaka kutentha komwe kwalembedwa patebulo ili pansipa, ndipo imagwira ntchito mocheperako mpaka 113 ° F / 45 ° C malinga ndi ma graph omwe ali pansipa. Ma grafu amafotokoza kuchepetsedwa kwa masiku ano pokhudzana ndi kutentha. Zotulutsa zenizeni sizidzakhala zokwera kuposa zomwe zafotokozedwa m'ma data a inverter, ndipo zitha kukhala zotsika kuposa zomwe zafotokozedwa pa graph ili m'munsiyi chifukwa cha ma inverter amtundu uliwonse mdziko ndi grid.

Ma Inverters atatu Phase

Ma inverter otsatirawa amagwira ntchito ndi mphamvu zonse komanso mafunde athunthu mpaka kutentha komwe kwalembedwa patebulo ili m'munsimu, ndipo imagwira ntchito mochepetsedwa mpaka 113°F/45°C, 95℉/35℃ kapena 120°F/50°C malingana ndi ku ma graph omwe ali pansipa. Ma grafu akufotokoza kuchepa kwa mphamvu zamakono (mphamvu) pokhudzana ndi kutentha. Zotulutsa zenizeni sizidzakhala zokwera kuposa zomwe zafotokozedwa m'ma data a inverter, ndipo zitha kukhala zotsika kuposa zomwe zafotokozedwa pa graph ili m'munsiyi chifukwa cha ma inverter amtundu uliwonse mdziko ndi grid.

Ma Hybrid Inverters

Mitundu yotsatirayi ya inverter imagwira ntchito ndi mphamvu zonse komanso mafunde athunthu mpaka kutentha komwe kwalembedwa patebulo ili pansipa, ndipo imagwira ntchito mocheperako mpaka 113 ° F / 45 ° C malinga ndi ma graph omwe ali pansipa. Ma grafu amafotokoza kuchepetsedwa kwa masiku ano pokhudzana ndi kutentha. Zotulutsa zenizeni sizidzakhala zokwera kuposa zomwe zafotokozedwa m'ma data a inverter, ndipo zitha kukhala zotsika kuposa zomwe zafotokozedwa pa graph ili m'munsiyi chifukwa cha ma inverter amtundu uliwonse mdziko ndi grid.

3. Chifukwa cha kuchepa kwa kutentha

Kutsika kwa kutentha kumachitika pazifukwa zosiyanasiyana, kuphatikiza izi:

• The inverter sangathe kutaya kutentha chifukwa cha zinthu zoipa kukhazikitsa.
• Inverter imayendetsedwa ndi kuwala kwa dzuwa kapena kutentha kwakukulu komwe kumalepheretsa kutentha kokwanira.
• Inverter imayikidwa mu kabati, chipinda kapena malo ena ang'onoang'ono otsekedwa. Malo ochepa sangathandize kuziziritsa kwa inverter.
• PV array ndi inverter ndizosiyana (mphamvu ya PV array poyerekeza ndi mphamvu ya inverter).
• Ngati malo unsembe wa inverter ali pa okwera oipa (mwachitsanzo okwera mu osiyanasiyana pazipita opareshoni okwera kapena pamwamba Mean Sea Level, onani Gawo "Technical Data" mu inverter ntchito Buku). Chotsatira chake, kutsika kwa kutentha kumakhala kosavuta kuchitika chifukwa mpweya umakhala wochepa kwambiri pamtunda ndipo motero sungathe kuziziritsa zigawozo.

4. Kutentha kwa kutentha kwa ma inverters

Ma inverters a Renac ali ndi makina ozizirira ogwirizana ndi mphamvu zawo komanso kapangidwe kawo. Ma inverters ozizira amataya kutentha kumlengalenga kudzera m'makina otentha ndi fan.

Chidacho chikangopanga kutentha kochulukirapo kuposa momwe mpanda wake ungathere, chowotcha chamkati chimayatsa (chiwombankhanga chimayatsa kutentha kwa sinkyo kukafika pa 70 ℃) ndikukokera mpweya kudzera munjira zoziziritsa za mpanda. Faniyo imayendetsedwa mofulumira: imatembenuka mofulumira pamene kutentha kumakwera. Ubwino wa kuziziritsa ndikuti inverter imatha kupitiliza kudyetsa mphamvu yake yayikulu pamene kutentha kumakwera. The inverter si derated mpaka dongosolo yozizira kufika malire a mphamvu yake.

Mutha kupewa kuchepa kwa kutentha poyika ma inverters m'njira yoti kutentha kutayike mokwanira:

• Ikani ma inverters m'malo ozizira(mwachitsanzo zipinda zapansi m'malo mwa attics), kutentha kozungulira ndi chinyezi chachibale ziyenera kukwaniritsa zofunikira izi.

• Osayika inverter mu kabati, chipinda kapena malo ena ang'onoang'ono otsekedwa, mpweya wokwanira uyenera kuperekedwa kuti uwononge kutentha kopangidwa ndi unit.
• Osawonetsa inverter kuti iwongolere kuwala kwa dzuwa. Ngati muyika inverter panja, ikani pamthunzi kapena ikani denga pamwamba.

• Sungani zovomerezeka zochepa kuchokera ku ma inverters oyandikana nawo kapena zinthu zina, monga momwe zafotokozedwera m'buku la unsembe. Wonjezerani zilolezo ngati kutentha kwakukulu kungachitike pamalo oyikapo.

• Mukayika ma inverters angapo, sungani chilolezo chokwanira mozungulira ma inverters kuti muwonetsetse malo okwanira kutentha.

5. Mapeto

Ma inverter a Renac ali ndi makina ozizirira ogwirizana ndi mphamvu ndi kapangidwe kawo, kutsika kwa kutentha sikukhala ndi zotsatirapo zoyipa pa inverter, koma mutha kupewa kutsika kwa kutentha poyika ma inverters m'njira yoyenera.