Na fotovoltaic okporo njikọ inverters, e nwere ọtụtụ voltaji teknuzu paramita: kacha DC input voltaji, MPPT arụ ọrụ voltaji nso, full ibu voltaji nso, malite voltaji, gosiri voltaji voltaji, mmepụta voltaji, wdg Ndị a parameters nwere onwe ha na-elekwasị anya na niile bara uru. .Isiokwu a na-achikota ụfọdụ okwu voltaji nke fotovoltaic inverters maka ntụnye aka na mgbanwe.
Q: Oke ntinye voltaji DC
A: Na-amachi oke voltaji sekit na-emeghe nke eriri, a na-achọrọ na voltaji sekit na-emeghe nke eriri ahụ enweghị ike ịgafe voltaji ntinye DC kacha elu na oke okpomọkụ kacha nta.Dị ka ihe atụ, ọ bụrụ na-emeghe sekit voltaji nke akụrụngwa bụ 38V, okpomọkụ ọnụọgụ bụ -0.3%/℃, na-emeghe circuit voltaji bụ 43.7V na mwepu 25 ℃, mgbe a kacha nke 25 urụk nwere ike kpụrụ.25 * 43.7=1092.5V.
Q: MPPT arụ ọrụ voltaji nso
A: The inverter e mere ka imeghari ka voltaji na-agbanwe mgbe niile nke components.Voltage nke ihe ndị dị iche iche na-adịgasị iche dabere na mgbanwe nke ọkụ na okpomọkụ, na ọnụ ọgụgụ nke ihe ejikọrọ na usoro dịkwa mkpa ka e mepụta ya dịka ọnọdụ kpọmkwem nke ọrụ ahụ.Ya mere, inverter ewepụtala oke ọrụ n'ime nke ọ nwere ike ịrụ ọrụ nke ọma.Ogologo oke voltaji, ka ọ na-abawanye ngwa ngwa nke inverter.
Q: Full ibu voltaji nso
A: N'ime oke voltaji nke inverter, ọ nwere ike wepụta ike akwadoro.Na mgbakwunye na ijikọ modul fotovoltaic, enwekwara ụfọdụ ngwa ndị ọzọ nke inverter.The inverter nwere kacha ntinye ugbu a, dị ka 40kW, nke bụ 76A.Naanị mgbe voltaji ntinye gafere 550V nwere ike ịpụta 40kW.Mgbe voltaji ntinye aka karịa 800V, okpomọkụ na-akpata site na mfu na-abawanye nke ọma, na-eduga na inverter chọrọ ibelata mmepụta ya.Ya mere, eriri eriri eriri kwesịrị ka emebere dị ka o kwere mee n'etiti oke voltaji zuru oke.
Q: Mmalite voltaji
A: Tupu ịmalite inverter, ọ bụrụ na akụrụngwa anaghị arụ ọrụ ma dị na steeti sekit mepere emepe, voltaji ga-adị elu.Mgbe ịmalite inverter, ihe ndị ahụ ga-arụ ọrụ, na voltaji ga-ebelata.Iji gbochie inverter ịmalite ugboro ugboro, mmalite voltaji nke inverter kwesịrị ịdị elu karịa obere voltaji arụ ọrụ.Mgbe inverter malitere, ọ pụtaghị na inverter ga-enwe mmepụta ike ozugbo.Akụkụ njikwa nke inverter, CPU, ihuenyo na ihe ndị ọzọ na-arụ ọrụ mbụ.Nke mbụ, onye inverter na-enyocha onwe ya, wee lelee ihe mejupụtara ya na grid ike.Mgbe enweghi nsogbu, onye ntụgharị ga-enwe mmepụta naanị mgbe ike fotovoltaic karịrị ike njikere nke inverter.
Voltaji ntinye DC kacha elu dị elu karịa oke voltaji arụ ọrụ nke MPPT, ma mmalite voltaji dị elu karịa voltaji arụ ọrụ kacha nta nke MPPT.Nke a bụ n'ihi na paramita abụọ nke voltaji ntinye DC kacha elu na mmalite voltaji kwekọrọ na steeti sekit mepere emepe nke akụrụngwa, na voltaji nke oghere nke akụrụngwa na-adịkarị ihe dịka 20% dị elu karịa voltaji arụ ọrụ.
Q: Olee otú iji chọpụta mmepụta voltaji na grid njikọ voltaji?
A: The DC voltaji na-adịghị metụtara AC n'akụkụ voltaji, na a-ahụkarị photovoltaic inverter nwere AC mmepụta nke 400VN/PE.Ọnụnọ ma ọ bụ enweghị ihe ngbanwe dịpụrụ adịpụ anaghị emetụta voltaji mmepụta.Inverter ejikọrọ grid na-achịkwa ihe dị ugbu a, na voltaji ejikọrọ grid dabere na voltaji grid.Tupu njikọ grid, onye ntụgharị ga-achọpụta voltaji grid na jikọọ na grid ma ọ bụrụ na ọ dabara ọnọdụ.
Q: Gịnị bụ mmekọrịta dị n'etiti input na mmepụta voltaji?
A: Olee otú e si nweta voltaji mmepụta nke okporo njikọ photovoltaic inverter dị ka 270V?
Oke kachasị ike nsochi nke MPPT inverter dị elu bụ 420-850V, nke pụtara na ike mmepụta ruru 100% mgbe voltaji DC bụ 420V.
The elu voltaji (DC420V) na-converted ka irè voltaji nke alternating ugbu a, mụbaa site ntughari ọnụọgụ iji nweta (AC270V), nke metụtara voltaji ụkpụrụ nso na usu obosara mmepụta okirikiri nke mmepụta akụkụ.
The voltaji ụkpụrụ nso nke 270 (-10% ka 10%) bụ: kasị elu voltaji mmepụta na DC n'akụkụ DC420V bụ AC297V;Iji nweta uru bara uru nke AC297V AC ike na DC voltaji (elu AC voltaji) nke 297 * 1.414 = 420V, agbara mgbako nwere ike nweta AC270V.Usoro a bụ: DC420V DC na-achịkwa ike PWM (ụkpụrụ obosara obosara) mgbe agbanyere ya ma gbanyụọ (IGBT, IPM, wdg), wee kpochaa ya iji nweta ike AC.
Ajụjụ: Ndị inverters fotovoltaic chọrọ obere voltaji na-agba ịnyịnya?
A: General ike ọdụ ụdị fotovoltaic inverters chọrọ obere voltaji na-agba ịnyịnya site ọrụ.
Mgbe nsogbu grid ọkụ ma ọ bụ ọgba aghara na-ebute voltaji dara na ebe njikọ grid nke ugbo ikuku, ikuku ikuku nwere ike ịrụ ọrụ na-aga n'ihu n'ime oke voltaji dara.Maka osisi ọkụ fotovoltaic, mgbe ihe mberede ma ọ bụ ọgba aghara na-akpata grid voltaji na-adaba, n'ime oge ụfọdụ na oge oge nke voltaji na-adaba, ọkụ fotovoltaic nwere ike hụ na arụ ọrụ na-aga n'ihu na-enweghị nkwụsị na grid.
Q: Gịnị bụ input voltaji na DC n'akụkụ nke okporo jikọọ inverter?
A: Voltaji ntinye dị n'akụkụ DC nke inverter fotovoltaic dịgasị iche na ibu.Voltaji ntinye a kapịrị ọnụ na-ejikọta na wafer silicon.N'ihi nnukwu nguzogide dị n'ime nke akụkụ silicon, mgbe ibu dị ugbu a na-abawanye, voltaji nke ogwe silicon ga-ebelata ngwa ngwa.Ya mere, ọ dị mkpa ịnweta nkà na ụzụ nke na-aghọ njikwa isi ike kachasị.Debe voltaji mmepụta na ugbu a nke ogwe silicon na ọkwa dị mma iji hụ na mmepụta ike kachasị.
Ọtụtụ mgbe, enwere ike inye aka n'ime inverter fotovoltaic.Enwere ike ịmalite inye ọkụ inyeaka a mgbe ntinye DC voltaji ruru gburugburu 200V.Mgbe mmalite, enwere ike ịnye ike na sekit njikwa ime nke inverter, igwe ahụ na-abanyekwa na ọnọdụ njikere.
N'ozuzu, mgbe ntinye voltaji ruru 200V ma ọ bụ karịa, inverter nwere ike ịmalite ịrụ ọrụ.Nke mbụ, kwalite ntinye DC na ụfọdụ voltaji, wee tụgharịa ya na voltaji grid wee hụ na usoro ahụ na-anọgide na-adịgide adịgide, wee tinye ya na grid.Inverters na-achọkarị voltaji grid ka ọ dị n'okpuru 270Vac, ma ọ bụghị ya, ha enweghị ike ịrụ ọrụ nke ọma.Njikọ grid inverter chọrọ na njirimara mmepụta nke inverter bụ njirimara isi iyi dị ugbu a, ọ ghaghịkwa ijide n'aka na usoro mmepụta kwekọrọ na akụkụ AC nke grid ike.
Oge nzipu: Mee-15-2024