{"id":68333,"date":"2026-07-28T10:41:24","date_gmt":"2026-07-28T08:41:24","guid":{"rendered":"https:\/\/www.vicoexport.com\/68333\/como-elegir-el-inversor-fotovoltaico-adecuado-para-cada-instalacion\/"},"modified":"2026-07-28T12:14:31","modified_gmt":"2026-07-28T10:14:31","slug":"cum-sa-alegi-invertorul-fotovoltaic-potrivit-pentru-fiecare-instalatie","status":"publish","type":"post","link":"https:\/\/www.vicoexport.com\/ro\/68333\/cum-sa-alegi-invertorul-fotovoltaic-potrivit-pentru-fiecare-instalatie\/","title":{"rendered":"Cum s\u0103 alegi invertorul fotovoltaic potrivit pentru fiecare instala\u021bie"},"content":{"rendered":"<p>Alegerea unui <strong>invertor fotovoltaic<\/strong> poate p\u0103rea simpl\u0103: se verific\u0103 puterea panourilor, se caut\u0103 un invertor cu o putere similar\u0103 \u0219i gata.<\/p>\n<p>\u00cen realitate, exist\u0103 \u0219i alte aspecte care trebuie verificate.<\/p>\n<p>Invertorul trebuie s\u0103 fie <strong>compatibil cu puterea instala\u021biei<\/strong>, dar \u0219i <strong>cu tensiunea \u0219i curentul modulelor<\/strong>, cu num\u0103rul de <strong>panouri conectate<\/strong> \u00een fiecare string, cu diferitele <strong>orient\u0103ri<\/strong> ale acoperi\u0219ului \u0219i, atunci c\u00e2nd este cazul, cu <strong>bateria<\/strong>.<\/p>\n<p>Nu este necesar s\u0103 cunoa\u0219te\u021bi toate modelele de pe pia\u021b\u0103 pentru a face o prim\u0103 selec\u021bie. Important este s\u0103 r\u0103spunde\u021bi corect la c\u00e2teva \u00eentreb\u0103ri de baz\u0103.<\/p>\n<h2><strong>Ce face, de fapt, un invertor fotovoltaic?<\/strong><\/h2>\n<p>Panourile solare produc energie electric\u0103 sub form\u0103 de curent continuu (DC). Cu toate acestea, locuin\u021bele, spa\u021biile comerciale, fabricile \u0219i re\u021beaua electric\u0103 func\u021bioneaz\u0103 \u00een principal cu curent alternativ (AC).<\/p>\n<p>Invertorul realizeaz\u0103 aceast\u0103 conversie.<\/p>\n<p>Totu\u0219i, invertoarele moderne fac mult mai mult. \u00cen func\u021bie de model, acestea pot:<\/p>\n<ul>\n<li>Controla produc\u021bia panourilor.<\/li>\n<li>Gestiona o baterie.<\/li>\n<li>Limita energia injectat\u0103 \u00een re\u021bea.<\/li>\n<li>Men\u021bine alimentarea anumitor consumatori \u00een timpul unei \u00eentreruperi de curent.<\/li>\n<li>Detecta defec\u021biunile instala\u021biei.<\/li>\n<li>Transmite datele de produc\u021bie c\u0103tre o platform\u0103 de monitorizare.<\/li>\n<li>Coordona mai multe invertoare \u00een cadrul aceleia\u0219i centrale.<\/li>\n<\/ul>\n<p>De aceea, invertorul poate fi considerat <strong>centrul de control al instala\u021biei fotovoltaice<\/strong>.<\/p>\n<h2><strong>Prima \u00eentrebare: ce tip de instala\u021bie urmeaz\u0103 s\u0103 fie realizat?<\/strong><\/h2>\n<p>Tipul proiectului ajut\u0103 la restr\u00e2ngerea rapid\u0103 a op\u021biunilor.<\/p>\n<p>O locuin\u021b\u0103 de 5 kW nu are nevoie de acela\u0219i invertor ca o hal\u0103 industrial\u0103 de 500 kW sau ca o central\u0103 fotovoltaic\u0103 de mai mul\u021bi megawa\u021bi.<\/p>\n<h3><strong>Locuin\u021b\u0103<\/strong><\/h3>\n<p>\u00cen cazul locuin\u021belor se utilizeaz\u0103, de regul\u0103, invertoare de putere mai mic\u0103. Acestea pot fi monofazate sau trifazate, \u00een func\u021bie de alimentarea electric\u0103 a cl\u0103dirii.<\/p>\n<p>Atunci c\u00e2nd se dore\u0219te instalarea unei baterii, se analizeaz\u0103 de obicei un invertor hibrid.<\/p>\n<h3><strong>Spa\u021biu comercial sau \u00eentreprindere mic\u0103<\/strong><\/h3>\n<p>\u00cen magazine, birouri, exploata\u021bii agricole \u0219i hale de dimensiuni reduse pot fi utilizate invertoare trifazate de putere mai mare.<\/p>\n<p>Dac\u0103 obiectivul este consumul direct al energiei solare \u00een timpul programului de lucru, poate fi suficient un invertor conectat la re\u021bea. Atunci c\u00e2nd se dore\u0219te \u0219i stocarea energiei, trebuie analizat\u0103 o solu\u021bie hibrid\u0103.<\/p>\n<h3><strong>Instala\u021bie industrial\u0103<\/strong><\/h3>\n<p>Acoperi\u0219urile industriale sunt adesea \u00eemp\u0103r\u021bite \u00een mai multe zone sau c\u00e2mpuri de module. Din acest motiv, se utilizeaz\u0103 \u00een mod obi\u0219nuit invertoare string trifazate cu mai multe MPPT-uri.<\/p>\n<p>Acest tip de arhitectur\u0103 permite \u00eemp\u0103r\u021birea instala\u021biei \u00eentre mai multe echipamente \u0219i controlarea independent\u0103 a diferitelor zone ale acoperi\u0219ului.<\/p>\n<h3><strong>Central\u0103 fotovoltaic\u0103 de mari dimensiuni<\/strong><\/h3>\n<p>\u00cen proiectele utility-scale se utilizeaz\u0103 invertoare de mare putere, proiectate pentru c\u00e2mpuri fotovoltaice extinse, sta\u021bii de medie tensiune \u0219i sisteme avansate de control al centralei.<\/p>\n<p>\u00cen prezent, Sungrow \u00ee\u0219i diferen\u021biaz\u0103 solu\u021biile \u00eentre aplica\u021bii reziden\u021biale, comerciale \u0219i industriale \u0219i proiecte de mari dimensiuni.<\/p>\n<h2><strong>A doua \u00eentrebare: instala\u021bia va include o baterie?<\/strong><\/h2>\n<p>Aceasta este una dintre cele mai importante decizii.<\/p>\n<h3><strong>Instala\u021bie f\u0103r\u0103 baterie<\/strong><\/h3>\n<p>Dac\u0103 instala\u021bia va produce energie doar pentru consum direct sau pentru injectare \u00een re\u021bea, poate fi utilizat un invertor conectat la re\u021bea.<\/p>\n<p>\u00cen timpul zilei, invertorul transform\u0103 energia produs\u0103 de panouri \u0219i o transmite c\u0103tre consumatorii cl\u0103dirii. Energia care nu este consumat\u0103 poate fi injectat\u0103 \u00een re\u021bea, cu condi\u021bia ca instala\u021bia \u0219i contractul de furnizare s\u0103 permit\u0103 acest lucru.<\/p>\n<h3><strong>Instala\u021bie cu baterie<\/strong><\/h3>\n<p>Dac\u0103 se dore\u0219te stocarea surplusului de energie pentru utilizare ulterioar\u0103, trebuie integrat un sistem de stocare.<\/p>\n<p>\u00cen instala\u021biile reziden\u021biale \u0219i \u00een proiectele comerciale de mici dimensiuni este frecvent utilizat un <strong>invertor hibrid<\/strong>. Acesta gestioneaz\u0103 simultan panourile, bateria, consumul cl\u0103dirii \u0219i conexiunea la re\u021bea.<\/p>\n<p>Un exemplu este gama <a href=\"https:\/\/www.vicoexport.com\/producto\/inversor-sungrow-hibrido-sh3-0-3-6-4-0-5-0-6-0rs\/\">Sungrow SH3.0\/3.6\/4.0\/5.0\/6.0RS<\/a>, format\u0103 din invertoare hibride monofazate cu puteri \u00eentre 3 \u0219i 6 kW. Seria dispune de dou\u0103 MPPT-uri, dou\u0103 intr\u0103ri de string, un curent fotovoltaic maxim de 16 A per MPPT \u0219i 32 A \u00een total, precum \u0219i de monitorizare prin iSolarCloud.<\/p>\n<p>Pentru instala\u021bii trifazate de putere mai mare poate fi analizat\u0103 gama <a href=\"https:\/\/www.vicoexport.com\/producto\/inversor-trifasico-hibrido-sungrow-sh15-20-25t\/\">Sungrow SH15\/20\/25T<\/a>. Aceast\u0103 serie ofer\u0103 puteri de 15, 20 \u0219i 25 kW, trei MPPT-uri, cinci intr\u0103ri de string \u0219i compatibilitate cu bateriile Sungrow SBR \u0219i SBH.<\/p>\n<p>\u00cen orice caz, nu trebuie presupus c\u0103 o baterie este compatibil\u0103 cu un invertor doar pentru c\u0103 ambele func\u021bioneaz\u0103 la \u00eenalt\u0103 tensiune. Produc\u0103torul trebuie s\u0103 confirme \u00een mod expres compatibilitatea dintre cele dou\u0103 echipamente.<\/p>\n<h2><strong>A treia \u00eentrebare: instala\u021bia este monofazat\u0103 sau trifazat\u0103?<\/strong><\/h2>\n<p>R\u0103spunsul depinde de tipul de racordare electric\u0103 a cl\u0103dirii.<\/p>\n<h3><strong>Conexiune monofazat\u0103<\/strong><\/h3>\n<p>Este frecvent\u0103 \u00een locuin\u021be \u0219i \u00een cazul racordurilor electrice de putere redus\u0103. \u00cen aceste situa\u021bii trebuie selectat un invertor monofazat compatibil cu puterea instala\u021biei.<\/p>\n<h3><strong>Conexiune trifazat\u0103<\/strong><\/h3>\n<p>Este frecvent\u0103 \u00een companii, unit\u0103\u021bi industriale, exploata\u021bii agricole \u0219i locuin\u021be cu un consum ridicat de energie.<\/p>\n<p>\u00centr-o re\u021bea trifazat\u0103, energia este distribuit\u0103 pe trei faze. Invertorul trebuie s\u0103 fie proiectat pentru a func\u021biona cu acest tip de conexiune.<\/p>\n<p>\u00cenainte de selectarea echipamentului, este recomandat s\u0103 se verifice:<\/p>\n<ul>\n<li>Tipul aliment\u0103rii electrice a cl\u0103dirii.<\/li>\n<li>Puterea contractat\u0103.<\/li>\n<li>Puterea maxim\u0103 permis\u0103 \u00een punctul de racordare.<\/li>\n<li>Existen\u021ba unor consumatori monofaza\u021bi sau trifaza\u021bi.<\/li>\n<li>Necesitatea aliment\u0103rii consumatorilor \u00een timpul unei \u00eentreruperi a re\u021belei.<\/li>\n<\/ul>\n<p>Faptul c\u0103 un invertor are o putere mai mare nu \u00eenseamn\u0103 c\u0103 poate fi instalat la orice tip de racord. Tipul re\u021belei trebuie s\u0103 fie compatibil.<\/p>\n<h2><strong>A patra \u00eentrebare: acoperi\u0219ul este simplu sau are mai multe orient\u0103ri?<\/strong><\/h2>\n<p>Aici intervine unul dintre conceptele care genereaz\u0103 cele mai multe \u00eentreb\u0103ri: <strong>MPPT-urile<\/strong>.<\/p>\n<h3><strong>Ce este un MPPT, explicat simplu?<\/strong><\/h3>\n<p>Un MPPT este un sistem al invertorului care caut\u0103 punctul de func\u021bionare \u00een care panourile pot produce cantitatea maxim\u0103 posibil\u0103 de energie.<\/p>\n<p>MPPT-urile pot fi comparate cu ni\u0219te benzi independente.<\/p>\n<p>Dac\u0103 toate panourile sunt orientate spre sud, au aceea\u0219i \u00eenclina\u021bie \u0219i primesc aproximativ aceea\u0219i cantitate de radia\u021bie solar\u0103, acestea pot func\u021biona \u00een cadrul aceluia\u0219i grup.<\/p>\n<p>Dac\u0103 \u00eens\u0103 o parte dintre panouri este orientat\u0103 spre est, iar alta spre vest, acestea nu primesc aceea\u0219i radia\u021bie \u00een acela\u0219i moment. \u00cen acest caz, este recomandat s\u0103 fie conectate la MPPT-uri diferite.<\/p>\n<p>MPPT-urile sunt deosebit de utile atunci c\u00e2nd exist\u0103:<\/p>\n<ul>\n<li>Mai multe orient\u0103ri.<\/li>\n<li>Unghiuri de \u00eenclina\u021bie diferite.<\/li>\n<li>Zone cu niveluri diferite de umbrire, care pot fi conectate la MPPT-uri independente.<\/li>\n<li>Zone separate ale cl\u0103dirii.<\/li>\n<li>Numere diferite de module \u00een fiecare c\u00e2mp.<\/li>\n<li>Extinderi realizate \u00een etape diferite.<\/li>\n<\/ul>\n<p>Mai multe MPPT-uri sunt utile atunci c\u00e2nd zonele cu orient\u0103ri, \u00eenclina\u021bii sau condi\u021bii de umbrire diferite pot fi conectate la trackere independente. Totu\u0219i, acestea nu elimin\u0103 automat pierderile cauzate de umbre \u00een interiorul aceluia\u0219i string.<\/p>\n<h3><strong>MPPT-urile \u0219i intr\u0103rile de string nu sunt acela\u0219i lucru<\/strong><\/h3>\n<p>Aceste dou\u0103 concepte sunt adesea confundate.<\/p>\n<p>De exemplu, un invertor poate avea trei MPPT-uri \u0219i cinci intr\u0103ri de string. Aceasta \u00eenseamn\u0103 c\u0103 dispune de cinci conexiuni fizice pentru stringuri, \u00eens\u0103 unele dintre ele utilizeaz\u0103 acela\u0219i MPPT.<\/p>\n<p>Atunci c\u00e2nd mai multe stringuri sunt conectate la acela\u0219i MPPT, trebuie respectate condi\u021biile indicate de produc\u0103tor. \u00cen general, stringurile trebuie s\u0103 utilizeze acela\u0219i model \u0219i acela\u0219i num\u0103r de module, cu orientare, \u00eenclina\u021bie \u0219i expunere solar\u0103 similare.<\/p>\n<h3><strong>Ce este un string?<\/strong><\/h3>\n<p>Un string este un grup de panouri conectate \u00een serie.<\/p>\n<p>Curentul trece de la un modul la urm\u0103torul, iar tensiunile se \u00eensumeaz\u0103.<\/p>\n<p>De exemplu, dac\u0103 sunt conectate 20 de panouri \u00een serie, invertorul nu prime\u0219te tensiunea unui singur panou, ci suma tensiunilor celor 20 de panouri.<\/p>\n<p>De aceea, num\u0103rul de module per string nu poate fi stabilit aproximativ. Acesta trebuie calculat.<\/p>\n<h3><strong>De ce trebuie verificat\u0103 tensiunea?<\/strong><\/h3>\n<p>Fiecare invertor admite o tensiune maxim\u0103.<\/p>\n<p>Tensiunea panourilor se modific\u0103 \u00een func\u021bie de temperatur\u0103. La temperaturi sc\u0103zute, tensiunea \u00een circuit deschis cre\u0219te.<\/p>\n<p>Aceasta \u00eenseamn\u0103 c\u0103 un string care pare corect dac\u0103 se iau \u00een considerare doar datele standard ale panoului ar putea dep\u0103\u0219i tensiunea maxim\u0103 a invertorului \u00eentr-o zi deosebit de rece.<\/p>\n<p>Pentru a evita aceast\u0103 situa\u021bie, trebuie verificate:<\/p>\n<ul>\n<li>Tensiunea \u00een circuit deschis a modulului.<\/li>\n<li>Num\u0103rul de module conectate \u00een serie.<\/li>\n<li>Coeficientul de temperatur\u0103.<\/li>\n<li>Temperatura minim\u0103 estimat\u0103 la amplasament.<\/li>\n<li>Tensiunea maxim\u0103 admis\u0103 de invertor.<\/li>\n<li>Intervalul de func\u021bionare al MPPT-urilor.<\/li>\n<\/ul>\n<p>Tensiunea maxim\u0103 calculat\u0103 a stringului nu trebuie s\u0103 dep\u0103\u0219easc\u0103 niciodat\u0103 limita indicat\u0103 de produc\u0103torul invertorului.<\/p>\n<h3><strong>De ce trebuie verificat \u0219i curentul?<\/strong><\/h3>\n<p>Tensiunea nu este singura limit\u0103 electric\u0103.<\/p>\n<p>Modulele moderne pot func\u021biona la curen\u021bi ridica\u021bi. Din acest motiv, trebuie verificat dac\u0103 invertorul admite at\u00e2t curentul modulului, c\u00e2t \u0219i curentul rezultat atunci c\u00e2nd mai multe stringuri sunt conectate \u00een paralel.<\/p>\n<p>Fi\u0219a tehnic\u0103 a invertorului face \u00een mod normal diferen\u021ba \u00eentre:<\/p>\n<ul>\n<li>Curentul maxim per string.<\/li>\n<li>Curentul maxim per MPPT.<\/li>\n<li>Curentul maxim de scurtcircuit.<\/li>\n<li>Num\u0103rul de intr\u0103ri disponibile.<\/li>\n<\/ul>\n<p>Un panou de mare putere nu este automat compatibil cu orice invertor. Trebuie verificate at\u00e2t tensiunea, c\u00e2t \u0219i curentul.<\/p>\n<h3><strong>Puterea panourilor trebuie s\u0103 fie egal\u0103 cu puterea invertorului?<\/strong><\/h3>\n<p>Nu neap\u0103rat.<\/p>\n<p>O instala\u021bie poate avea o putere total\u0103 instalat\u0103 a modulelor mai mare dec\u00e2t puterea nominal\u0103 a invertorului. Acest raport este cunoscut sub denumirea de <strong>raport DC\/AC<\/strong>.<\/p>\n<p>De exemplu:<\/p>\n<ul>\n<li>Puterea instalat\u0103 a panourilor: 120 kWp.<\/li>\n<li>Puterea invertorului: 100 kW.<\/li>\n<li>Raport DC\/AC: 1,20.<\/li>\n<\/ul>\n<p>Aceast\u0103 supradimensionare poate permite invertorului s\u0103 func\u021bioneze mai multe ore \u00een apropierea puterii sale nominale.<\/p>\n<p>Totu\u0219i, puterea modulelor nu trebuie m\u0103rit\u0103 f\u0103r\u0103 efectuarea calculelor necesare. O supradimensionare excesiv\u0103 poate genera pierderi mai mari prin clipping \u0219i poate dep\u0103\u0219i limitele de intrare ale echipamentului.<\/p>\n<p>Produc\u0103torul stabile\u0219te limitele electrice \u0219i puterea fotovoltaic\u0103 maxim\u0103 admis\u0103 sau recomandat\u0103 pentru fiecare model. \u00cen cadrul acestor limite, raportul DC\/AC adecvat trebuie calculat pentru fiecare proiect.<\/p>\n<h3><strong>Ce \u00eenseamn\u0103 clipping?<\/strong><\/h3>\n<p>Clipping-ul apare atunci c\u00e2nd panourile ar putea produce mai mult\u0103 putere dec\u00e2t poate transforma invertorul.<\/p>\n<p>S\u0103 presupunem c\u0103 avem o instala\u021bie cu 120 kWp \u00een module \u0219i un invertor limitat la 100 kW.<\/p>\n<p>\u00cen anumite momente, panourile ar putea \u00eencerca s\u0103 furnizeze mai mult de 100 kW. Invertorul \u00ee\u0219i va limita puterea de ie\u0219ire la valoarea maxim\u0103, iar energia suplimentar\u0103 nu va fi convertit\u0103.<\/p>\n<p>Un anumit nivel de clipping poate face parte din proiectarea instala\u021biei, \u00eens\u0103 trebuie calculat pentru a verifica dac\u0103 raportul DC\/AC este adecvat \u0219i dac\u0103 pierderile rezultate sunt acceptabile.<\/p>\n<p>\u00centr-o instala\u021bie conven\u021bional\u0103 conectat\u0103 la re\u021bea, energia care dep\u0103\u0219e\u0219te capacitatea instantanee de conversie a invertorului nu este utilizat\u0103. \u00cen sistemele hibride sau \u00een cele cu stocare cuplat\u0103 \u00een DC, comportamentul poate varia \u00een func\u021bie de arhitectur\u0103 \u0219i de capacitatea disponibil\u0103 de \u00eenc\u0103rcare.<\/p>\n<h2><strong>C\u00e2nd este necesar un invertor de putere mai mare?<\/strong><\/h2>\n<p>Pe m\u0103sur\u0103 ce dimensiunea proiectului cre\u0219te, se modific\u0103 \u0219i cerin\u021bele pentru invertor.<\/p>\n<h3><strong>Proiecte comerciale \u0219i industriale<\/strong><\/h3>\n<p>\u00centr-o hal\u0103 industrial\u0103 pot exista orient\u0103ri diferite, umbre, luminatoare sau zone distincte ale acoperi\u0219ului. \u00cen aceste cazuri, poate fi util un num\u0103r mai mare de MPPT-uri.<\/p>\n<p><a href=\"https:\/\/www.vicoexport.com\/producto\/inversor-sungrow-trifasico-sg125cx-p2\/\">Sungrow SG125CX-P2<\/a> este un invertor string trifazat de 125 kW. Conform documenta\u021biei oficiale, acesta dispune de 12 MPPT-uri, dou\u0103 intr\u0103ri de string per MPPT \u0219i un curent maxim de intrare de 30 A per MPPT. \u00cen plus, are grad de protec\u021bie IP66, clas\u0103 de protec\u021bie anticoroziv\u0103 C5 \u0219i poate fi integrat \u00een iSolarCloud prin solu\u021bia de comunica\u021bie corespunz\u0103toare.<\/p>\n<p>Cele 12 MPPT-uri permit \u00eemp\u0103r\u021birea unui acoperi\u0219 \u00een mai multe c\u00e2mpuri. Totu\u0219i, num\u0103rul de stringuri, num\u0103rul de module per string \u0219i distribu\u021bia acestora \u00eentre MPPT-uri trebuie calculate pentru fiecare instala\u021bie.<\/p>\n<h3><strong>Centrale fotovoltaice de mari dimensiuni<\/strong><\/h3>\n<p>\u00cen centralele utility-scale se utilizeaz\u0103 echipamente proiectate pentru tensiuni \u0219i puteri mult mai mari.<\/p>\n<p><a href=\"https:\/\/www.vicoexport.com\/producto\/inversor-sungrow-sg350hx-20\/\">Sungrow SG350HX-20<\/a> este un invertor string pentru sisteme de 1.500 Vdc. Documenta\u021bia oficial\u0103 indic\u0103 p\u00e2n\u0103 la \u0219ase MPPT-uri, 75 A per MPPT, maximum 30 de intr\u0103ri \u0219i un randament maxim declarat de 99,02%.<\/p>\n<p>Acest tip de invertor este destinat centralelor de mari dimensiuni \u0219i necesit\u0103 o analiz\u0103 complet\u0103 a c\u00e2mpului fotovoltaic, a blocurilor de putere, a evacu\u0103rii energiei electrice \u0219i a conexiunii la medie tensiune.<\/p>\n<h2><strong>Care este diferen\u021ba dintre un invertor de re\u021bea \u0219i unul hibrid?<\/strong><\/h2>\n<p>Principala diferen\u021b\u0103 este c\u0103 invertorul hibrid poate integra \u0219i gestiona o baterie compatibil\u0103, pe l\u00e2ng\u0103 controlul fluxurilor de energie dintre module, consumatori, baterie \u0219i re\u021bea.<\/p>\n<h3><strong>Invertor conectat la re\u021bea<\/strong><\/h3>\n<p>Transform\u0103 energia produs\u0103 de panouri \u0219i o furnizeaz\u0103 consumatorilor sau re\u021belei electrice.<\/p>\n<p>Dac\u0103 are loc o pan\u0103 de curent, \u00een mod normal acesta se opre\u0219te din motive de siguran\u021b\u0103, chiar dac\u0103 panourile continu\u0103 s\u0103 produc\u0103 energie.<\/p>\n<h3><strong>Invertor hibrid<\/strong><\/h3>\n<p>Pe l\u00e2ng\u0103 conversia energiei solare, acesta poate gestiona o baterie compatibil\u0103.<\/p>\n<p>\u00cen func\u021bie de echipament \u0219i de configura\u021bie, poate alimenta \u0219i anumi\u021bi consumatori atunci c\u00e2nd re\u021beaua cade.<\/p>\n<p>Totu\u0219i, existen\u021ba unui invertor hibrid \u0219i a unei baterii nu \u00eenseamn\u0103 automat c\u0103 \u00eentreaga cl\u0103dire va beneficia de alimentare de rezerv\u0103.<\/p>\n<p>Trebuie verificate:<\/p>\n<ul>\n<li>Puterea disponibil\u0103 \u00een modul backup.<\/li>\n<li>Capacitatea bateriei.<\/li>\n<li>Puterea consumatorilor.<\/li>\n<li>V\u00e2rfurile de pornire ale motoarelor.<\/li>\n<li>Configura\u021bia tabloului electric.<\/li>\n<li>Accesoriile necesare.<\/li>\n<li>Func\u021bionarea cu sarcini dezechilibrate.<\/li>\n<\/ul>\n<p>Circuitul de backup trebuie proiectat \u00een func\u021bie de necesit\u0103\u021bile reale ale clientului.<\/p>\n<h2><strong>La ce condi\u021bii de mediu trebuie s\u0103 reziste invertorul?<\/strong><\/h2>\n<p>\u0218i locul de instalare este important.<\/p>\n<p>Un invertor instalat \u00eentr-un garaj nu func\u021bioneaz\u0103 \u00een acelea\u0219i condi\u021bii ca unul amplasat \u00eentr-o hal\u0103 agricol\u0103, \u00eentr-o zon\u0103 de coast\u0103 sau \u00eentr-o central\u0103 expus\u0103 la praf \u0219i temperaturi ridicate.<\/p>\n<p>Este recomandat s\u0103 se verifice:<\/p>\n<ul>\n<li>Gradul de protec\u021bie IP.<\/li>\n<li>Protec\u021bia \u00eempotriva coroziunii.<\/li>\n<li>Temperatura de func\u021bionare.<\/li>\n<li>Altitudinea maxim\u0103 admis\u0103.<\/li>\n<li>Sistemul de r\u0103cire.<\/li>\n<li>Spa\u021biul necesar pentru ventila\u021bie.<\/li>\n<li>Expunerea direct\u0103 la soare.<\/li>\n<li>Accesibilitatea pentru lucr\u0103rile de mentenan\u021b\u0103.<\/li>\n<\/ul>\n<p>Gradele IP \u0219i clasele de protec\u021bie anticoroziv\u0103 trebuie verificate \u00een fi\u0219a tehnic\u0103 a modelului concret. Acestea nu trebuie generalizate pentru \u00eentreaga gam\u0103.<\/p>\n<h2><strong>Monitorizarea nu trebuie neglijat\u0103<\/strong><\/h2>\n<p>Monitorizarea permite verificarea produc\u021biei instala\u021biei \u0219i detectarea eventualelor probleme.<\/p>\n<p>\u00cen func\u021bie de proiect, pot fi necesare:<\/p>\n<ul>\n<li>Modul de comunica\u021bie.<\/li>\n<li>Contor de energie.<\/li>\n<li>Transformatoare de curent.<\/li>\n<li>Datalogger.<\/li>\n<li>Comunica\u021bie RS485.<\/li>\n<li>Conexiune Ethernet sau Wi-Fi.<\/li>\n<li>Controler de central\u0103.<\/li>\n<li>Sistem de limitare a injec\u021biei \u00een re\u021bea.<\/li>\n<li>Integrare cu un EMS.<\/li>\n<\/ul>\n<p>Sungrow utilizeaz\u0103 platforma iSolarCloud pentru monitorizarea diferitelor game reziden\u021biale \u0219i comerciale. Accesoriile necesare depind de invertor \u0219i de configura\u021bia instala\u021biei.<\/p>\n<h2><strong>Rezumat: ce solu\u021bie de invertor trebuie analizat\u0103 \u00een fiecare caz?<\/strong><\/h2>\n<table>\n<thead>\n<tr>\n<td><strong>Tipul instala\u021biei<\/strong><\/td>\n<td><strong>Solu\u021bie care poate fi analizat\u0103<\/strong><\/td>\n<td><strong>Exemplu<\/strong><\/td>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Locuin\u021b\u0103 monofazat\u0103 cu baterie<\/td>\n<td>Invertor hibrid monofazat<\/td>\n<td>Sungrow SH3.0\u20136.0RS<\/td>\n<\/tr>\n<tr>\n<td>Locuin\u021b\u0103 trifazat\u0103 sau spa\u021biu comercial mic cu baterie<\/td>\n<td>Invertor hibrid trifazat<\/td>\n<td>Sungrow SH15\/20\/25T<\/td>\n<\/tr>\n<tr>\n<td>Acoperi\u0219 comercial sau industrial<\/td>\n<td>Invertor string trifazat<\/td>\n<td>Sungrow SG125CX-P2<\/td>\n<\/tr>\n<tr>\n<td>Central\u0103 fotovoltaic\u0103 de mari dimensiuni<\/td>\n<td>Invertor string pentru aplica\u021bii utility-scale<\/td>\n<td>Sungrow SG350HX-20<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><em>Acest tabel are doar rol orientativ. Modelul final trebuie ales dup\u0103 verificarea modulelor, a stringurilor, a re\u021belei electrice \u0219i a cerin\u021belor de stocare \u0219i monitorizare.<\/em><\/p>\n<h2><strong>Gre\u0219eli frecvente la alegerea unui invertor<\/strong><\/h2>\n<p>La selectarea unui invertor nu este suficient\u0103 compararea puterii nominale. Printre cele mai frecvente gre\u0219eli se num\u0103r\u0103:<\/p>\n<ul>\n<li><strong>Analizarea exclusiv\u0103 a puterii: <\/strong>Dou\u0103 invertoare de 100 kW pot avea un num\u0103r diferit de MPPT-uri, curen\u021bi de intrare diferi\u021bi \u0219i sisteme de comunica\u021bie diferite.<\/li>\n<li><strong>Neefectuarea calculului modulelor per string: <\/strong>Num\u0103rul de module conectate \u00een serie trebuie calculat \u00een func\u021bie de temperaturile de la amplasament.<\/li>\n<li><strong>Confundarea MPPT-urilor cu intr\u0103rile: <\/strong>Un num\u0103r mai mare de intr\u0103ri fizice nu \u00eenseamn\u0103 neap\u0103rat mai multe MPPT-uri independente.<\/li>\n<li><strong>Neverificarea curentului panoului: <\/strong>Acest aspect devine tot mai important din cauza cre\u0219terii curentului modulelor fotovoltaice moderne.<\/li>\n<li><strong>Presupunerea compatibilit\u0103\u021bii cu bateria: <\/strong>Bateria trebuie s\u0103 fie aprobat\u0103 \u00een mod expres de produc\u0103torul invertorului.<\/li>\n<li><strong>Omiterea accesoriilor: <\/strong>Un contor, transformatoare de curent sau un datalogger pot fi necesare pentru func\u021bii precum injec\u021bia zero sau monitorizarea centralizat\u0103.<\/li>\n<li><strong>Presupunerea c\u0103 bateria ofer\u0103 backup total: <\/strong>Capacitatea de rezerv\u0103 depinde de invertor, baterie, tabloul electric \u0219i consumatorii conecta\u021bi.<\/li>\n<\/ul>\n<h2><strong>Ce informa\u021bii sunt necesare distribuitorului pentru a recomanda un invertor?<\/strong><\/h2>\n<p>Pentru o prim\u0103 selec\u021bie, este recomandat s\u0103 se furnizeze:<\/p>\n<ol>\n<li>Modelul \u0219i puterea modulelor.<\/li>\n<li>Num\u0103rul total de panouri.<\/li>\n<li>Orientarea \u0219i \u00eenclina\u021bia.<\/li>\n<li>Num\u0103rul de module per string.<\/li>\n<li>Puterea DC total\u0103.<\/li>\n<li>Tipul re\u021belei: monofazat\u0103 sau trifazat\u0103.<\/li>\n<li>Puterea AC necesar\u0103.<\/li>\n<li>Existen\u021ba unei baterii.<\/li>\n<li>Necesitatea func\u021biei de backup.<\/li>\n<li>Necesitatea limit\u0103rii injec\u021biei \u00een re\u021bea.<\/li>\n<li>Loca\u021bia proiectului.<\/li>\n<li>Tipul instala\u021biei: reziden\u021bial\u0103, comercial\u0103, industrial\u0103 sau utility-scale.<\/li>\n<\/ol>\n<p>Cu c\u00e2t sunt furnizate mai multe informa\u021bii, cu at\u00e2t scade riscul de a alege un echipament incompatibil sau de a omite accesoriile necesare.<\/p>\n<h2><strong>Consultan\u021b\u0103 pentru alegerea invertoarelor Sungrow<\/strong><\/h2>\n<p>Nu exist\u0103 un singur invertor potrivit pentru toate instala\u021biile. Alegerea depinde de dimensiunea proiectului, configura\u021bia modulelor, re\u021beaua electric\u0103 \u0219i func\u021biile necesare clientului.<\/p>\n<div style=\"background-color: #eef5f6; border-left: 5px solid #558f98; padding: 30px; margin: 35px 0; border-radius: 6px; text-align: center;\">\n<p style=\"font-size: 17px; line-height: 1.6; margin-bottom: 15px;\">La <strong>Vico Export Solar Energy<\/strong>, ajut\u0103m instalatorii, birourile de inginerie \u0219i companiile EPC s\u0103 selecteze invertoare pentru proiecte reziden\u021biale, comerciale \u0219i industriale, precum \u0219i pentru centrale fotovoltaice de mari dimensiuni.<\/p>\n<p style=\"font-size: 17px; line-height: 1.6; margin-bottom: 25px;\">Spune\u021bi-ne caracteristicile instala\u021biei dumneavoastr\u0103, iar echipa noastr\u0103 v\u0103 va ajuta s\u0103 verifica\u021bi <strong>modelul, configura\u021bia, accesoriile necesare \u0219i disponibilitatea<\/strong> pentru proiect.<\/p>\n<p><a style=\"display: inline-block; background-color: #558f98; color: #ffffff; padding: 13px 25px; border-radius: 4px; text-decoration: none; font-weight: 600; font-size: 16px;\" href=\"https:\/\/www.vicoexport.com\/categoria-producto\/inversores-electricos\/sungrow\/\">Consulta\u021bi invertoarele Sungrow<br \/>\n<\/a><\/p>\n<p style=\"margin-top: 22px; margin-bottom: 0; font-size: 15px; line-height: 1.7;\"><strong>Telefon:<\/strong> <a style=\"color: #24484e;\" href=\"tel:+34960074487\">960 074 487<\/a><br \/>\n<strong>E-mail:<\/strong> <a style=\"color: #24484e;\" href=\"mailto:info@vicoexport.com\">info@vicoexport.com<\/a><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Alegerea unui invertor fotovoltaic poate p\u0103rea simpl\u0103: se verific\u0103 puterea panourilor, se caut\u0103 un invertor cu o putere similar\u0103 \u0219i gata. \u00cen realitate, exist\u0103 \u0219i alte aspecte care trebuie verificate. Invertorul trebuie s\u0103 fie compatibil cu puterea instala\u021biei, dar \u0219i cu tensiunea \u0219i curentul modulelor, cu num\u0103rul de panouri conectate \u00een fiecare string, cu diferitele [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":68335,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[1763],"tags":[1939,1940,1780],"class_list":["post-68333","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-invertoare-stocarea-energiei","tag-inversores-solares","tag-monitorizacion-fotovoltaica","tag-sungrow"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Cum s\u0103 alegi invertorul fotovoltaic potrivit<\/title>\n<meta name=\"description\" content=\"Afl\u0103 cum s\u0103 alegi un invertor fotovoltaic \u00een func\u021bie de putere, 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