Yintoni iMPPT kunye neMPPT hybrid solar inverter?

Ekusebenzeni kwezityalo zamandla e-photovoltaic, sihlala sinethemba lokwandisa ukuguqulwa kwamandla okukhanya kumandla ombane ukuze kugcinwe iimeko zokusebenza ezifanelekileyo. Ke, sinokwandisa njani amandla okuvelisa amandla ombane we-photovoltaic?

Namhlanje, makhe sithethe ngento ebalulekileyo echaphazela ukusebenza kakuhle kokuveliswa kombane wezityalo zamandla e-photovoltaic-ubuninzi betekhnoloji yokulandelela indawo yamandla, nto leyo esihlala siyibiza.MPPT.

Inkqubo ye-Maximum Power Point Tracking (MPPT) yinkqubo yombane eyenza ukuba iphaneli ye-photovoltaic ikhuphe amandla ombane amaninzi ngokulungelelanisa imeko yokusebenza yemodyuli yombane. Iyakwazi ukugcina ngokufanelekileyo umbane othe ngqo owenziwe yipaneli yelanga kwibhetri, kwaye unokusombulula ngokufanelekileyo ukusetyenziswa kwamandla asekhaya kunye nezoshishino kwiindawo ezikude kunye neendawo zokhenketho ezingenako ukugqunywa ngamagridi amandla aqhelekileyo, ngaphandle kokubangela ukungcola kokusingqongileyo.

Umlawuli weMPPT unokubona umbane owenziweyo wepaneli yelanga ngexesha langempela kwaye ulandele i-voltage ephezulu kunye nexabiso langoku (VI) ukwenzela ukuba inkqubo inokuhlawula ibhetri ngokuphuma kwamandla aphezulu. Ukusetyenziswa kwiinkqubo ze-photovoltaic zelanga, ukulungelelanisa umsebenzi weepaneli zelanga, iibhetri, kunye nemithwalo yingqondo yenkqubo ye-photovoltaic.

Indima yeMPPT

Umsebenzi weMPPT unokubonakaliswa kwisivakalisi esinye: amandla okuphuma kweseli ye-photovoltaic ihambelana nombane osebenzayo womlawuli weMPPT. Kuphela xa isebenza kwi-voltage efanelekileyo kakhulu apho amandla ayo aphumayo anexabiso eliphezulu elikhethekileyo.

Ngenxa yokuba iiseli zelanga zichatshazelwa zizinto zangaphandle ezifana nokukhanya kokukhanya kunye nokusingqongileyo, amandla azo aphumayo atshintsha, kunye nokukhanya kokukhanya kuvelisa umbane ongaphezulu. I-inverter ene-MPPT yokulandelela amandla aphezulu kukusebenzisa ngokupheleleyo iiseli zelanga kwaye zibenze baqhube kwindawo ephezulu yamandla. Oko kukuthi, phantsi kweemeko zokukhanya kwelanga rhoqo, amandla okukhutshwa emva kwe-MPPT aya kuba phezulu kunokuba phambi kweMPPT.

Ulawulo lweMPPT lufezekiswa ngokubanzi ngesekethe yokuguqula i-DC/DC, i-photovoltaic cell array iqhagamshelwe kumthwalo ngesekethe ye-DC/DC, kwaye isixhobo sokulandelela amandla aphezulu sihlala sihleli.

Khangela utshintsho lwangoku kunye ne-voltage ye-photovoltaic array, kwaye ulungelelanise umjikelezo womsebenzi we-PWM yokuqhuba isiginali ye-DC / DC converter ngokotshintsho.

Kwiisekethe zomgca, xa ukuchasana komthwalo kufana nokuchasana kwangaphakathi kokunikezelwa kwamandla, ukunikezelwa kwamandla kunomlinganiselo ophezulu wokuphuma kwamandla. Nangona zombini iiseli ze-photovoltaic kunye neesekethe zokuguqulwa kwe-DC / DC zinamandla angenawo umgca, zinokuthi zithathelwe ingqalelo kwiisekethe zomgca ngexesha elifutshane kakhulu. Ngoko ke, ngokude ukuchasana okulinganayo kwe-DC-DC yokuguqulwa kwesiphaluka kulungelelaniswa ukuze ihlale ilingana nokuchasana kwangaphakathi kweseli ye-photovoltaic, ukukhutshwa okuphezulu kweseli ye-photovoltaic inokufezekiswa, kunye ne-MPPT yeseli ye-photovoltaic. nayo inokufezekiswa.

I-Linear, nangona kunjalo ixesha elifutshane kakhulu, inokuthathwa njengesekethe yomgca. Ngoko ke, ukuba nje ukuchasana okulinganayo kwe-DC-DC yokuguqulwa kwesekethe kulungelelaniswa ukuze ihlale ilingana ne-photovoltaic.

Ukuchasana kwangaphakathi kwebhetri kunokuqonda umphumo ophezulu weseli ye-photovoltaic kwaye uqonde kwakhona i-MPPT ye-photovoltaic cell.

Ukusetyenziswa kweMPPT

Ngokuphathelele isikhundla seMPPT, abantu abaninzi baya kuba nemibuzo: Ekubeni iMPPT ibaluleke kakhulu, kutheni singenakuyibona ngokuthe ngqo?

Ngokwenyani, iMPPT idityanisiwe kwi-inverter. Ukuthatha i-microinverter njengomzekelo, umlawuli we-MPPT wemodyuli ulandelela indawo ephezulu yamandla kwimodyuli nganye ye-PV. Oku kuthetha ukuba nangona imodyuli ye-photovoltaic ayisebenzi kakuhle, ayiyi kuchaphazela amandla okuvelisa amandla kwezinye iimodyuli. Ngokomzekelo, kuyo yonke inkqubo ye-photovoltaic, ukuba imodyuli enye ivaliwe yi-50% yokukhanya kwelanga, abalawuli bokulandelela amandla obuninzi bezinye iimodyuli baya kuqhubeka nokugcina ubuninzi babo bemveliso.

Ukuba unomdla kwiMPPT hybrid solar inverter, Wamkelekile ukuba uqhagamshelane nomenzi we-photovoltaic Radiance ukuyaFunda ngokugqithisileyo.