Inverter na-anaghị echekwa fotovoltaic

Okwu Mmalite Ngwaahịa
Igwe ntụgharị PV nke na-anaghị agagharị na grid bụ ngwaọrụ mgbanwe ike nke na-akpali-dọpụta na-eme ka ike DC ntinye dịkwuo elu wee tụgharịa ya ka ọ bụrụ ike AC 220V site na teknụzụ modulation obosara pulse nke SPWM sinusoidal bridge.
Dịka inverters jikọtara na grid, inverters PV off-grid chọrọ arụmọrụ dị elu, ntụkwasị obi dị elu, na ọtụtụ voltaji ntinye DC; na sistemụ ike PV nke ọkara na nke buru ibu, mmepụta nke inverter kwesịrị ịbụ ebili mmiri sinusoidal nwere obere mgbanwe.

Arụmọrụ na Atụmatụ
1. A na-eji obere ihe njikwa 16-bit ma ọ bụ obere ihe nhazi DSP 32-bit maka njikwa.
2.PWM njikwa mode, melite arụmọrụ nke ukwuu.
3. Jiri dijitalụ ma ọ bụ LCD gosipụta paramita ọrụ dị iche iche, ma nwee ike ịtọ paramita dị mkpa.
4. Mbugharị akụkụ anọ, ebili mmiri agbanweela, mmepụta ebili mmiri sine. Mmepụta ebili mmiri sine, ọnụego mgbanwe ebili mmiri erughị 5%.
5. Izi ezi nke voltaji dị elu, n'okpuru ibu a na-enye ọkwa, izi ezi nke mmepụta na-adịkarị obere karịa mgbakwunye ma ọ bụ mwepu 3%.
6. Ọrụ mmalite nwayọ nwayọ iji zere mmetụta dị elu nke ọkụ eletrik na batrị na ibu.
7. Mwepụ nke transformer ugboro ugboro, obere nha na ibu dị mfe.
8. Ejiri njikọ nkwukọrịta RS232/485 ọkọlọtọ, dị mfe maka njikwa nkwukọrịta dị anya.
9. Enwere ike iji ya mee ihe n'ebe dị elu karịa mita 5500 n'elu oke osimiri.
10, Site na nchekwa njikọ ntụgharị, nchekwa voltaji ntinye, nchedo voltaji ntinye, nchedo voltaji mmepụta, nchedo oke ibu mmepụta, nchedo sekit mkpụmkpụ mmepụta, nchedo oke ọkụ na ọrụ nchekwa ndị ọzọ.

Akụkụ teknụzụ dị mkpa nke ndị na-agbanwe ihe na-anaghị aga n'ihu
Mgbe ị na-ahọrọ ihe na-agbanwe agbanwe na-anaghị agagharị na grid, e wezụga ilebara anya na ụdị mmegharị na ụdị nkewapụ nke inverter, enwere ọtụtụ paramita teknụzụ dị oke mkpa, dịka voltaji sistemụ, ike mmepụta, ike kachasị elu, arụmọrụ ntụgharị, oge mgbanwe, wdg. Nhọrọ nke paramita ndị a nwere nnukwu mmetụta na mkpa ọkụ eletrik nke ibu.
1) Voltaji sistemụ:
Ọ bụ voltaji nke ngwugwu batrị ahụ. Voltaji ntinye nke inverter na-anaghị agagharị na voltaji mmepụta nke njikwa ahụ bụ otu, yabụ mgbe ị na-emepụta ma na-ahọrọ ụdị ahụ, lezie anya ka ị debe ya na onye njikwa ahụ.
2) Ike mmepụta:
Ngosipụta ike mmepụta nke inverter na-anaghị agagharị nwere ụdị abụọ, otu bụ ngosipụta ike doro anya, nkeji ahụ bụ VA, nke a bụ akara UPS ntụaka, ike mmepụta n'ezie kwesịkwara ịmụba ihe ike ahụ, dị ka inverter na-anaghị agagharị agagharị nke 500VA, ihe ike ahụ bụ 0.8, ike mmepụta n'ezie bụ 400W, ya bụ, nwere ike ịkwọ ibu resistive 400W, dị ka ọkụ eletrik, ihe esi nri induction, wdg.; nke abụọ bụ ngosipụta ike ọrụ, nkeji ahụ bụ W, dị ka inverter na-anaghị agagharị agagharị nke 5000W, ike mmepụta n'ezie bụ 5000W.
3) Ike kachasị elu:
N'ime sistemụ PV off-grid, modulu, batrị, inverters, ibu mejupụtara sistemụ eletriki, ike mmepụta inverter, na-ekpebi site na ibu, ụfọdụ ibu inductive, dị ka ikuku oyi, mgbapụta, wdg., moto dị n'ime, ike mmalite dị okpukpu 3-5 nke ike enyere ọkwa, yabụ inverter off-grid nwere ihe pụrụ iche achọrọ maka ibu oke ibu. Ike kachasị elu bụ ikike ibu oke ibu nke inverter off-grid.
Inverter na-enye ike mmalite na ibu ahụ, akụkụ ya bụ site na batrị ma ọ bụ modulu PV, ihe ndị ọzọ na-enyekwa oke site na ihe nchekwa ike dị n'ime inverter - capacitors na inductors. Capacitors na inductors bụ ihe nchekwa ike, mana ihe dị iche bụ na capacitors na-echekwa ike eletriki n'ụdị ubi eletriki, na ka ikike capacitor na-ebu ibu, otú ahụ ka ike ọ nwere ike ịchekwa. N'aka nke ọzọ, inductors na-echekwa ike n'ụdị ubi magnet. Ka magnetik nke isi inductor na-ebu ibu, otú ahụ ka inductance na-ebu ibu, na ike ka ukwuu enwere ike ịchekwa.
4) Arụmọrụ mgbanwe:
Arụmọrụ mgbanwe sistemụ mpụga grid gụnyere akụkụ abụọ, otu bụ arụmọrụ nke igwe ahụ n'onwe ya, sekit inverter na-anọghị na grid dị mgbagwoju anya, ịgafe mgbanwe ọtụtụ ogbo, yabụ arụmọrụ zuru oke dị ntakịrị ala karịa inverter ejikọtara na grid, n'ozuzu ya dị n'etiti 80-90%, ka ike nke arụmọrụ igwe inverter ka ukwuu, ikewapụ ugboro ugboro karịa arụmọrụ nkewapụ ugboro ugboro dị elu, ka arụmọrụ voltaji sistemụ dịkwa elu. Nke abụọ, arụmọrụ nke chaja na ntọhapụ batrị, nke a bụ ụdị batrị nwere mmekọrịta, mgbe mmepụta ike fotovoltaic na njikọta ike ibu, photovoltaic nwere ike inye ibu ozugbo iji, na-enweghị mkpa ịgafe mgbanwe batrị.
5) Oge mgbanwe:
Sistemụ mpụga grid nwere ibu, enwere PV, batrị, ụdị ngwaọrụ atọ, mgbe ike batrị ezughi oke, gbanwee gaa na ụdị ngwaọrụ, enwere oge mgbanwe, ụfọdụ inverters mpụga grid na-eji mgbanwe switch eletrọniki, oge n'ime milisekọnd 10, kọmputa desktọpụ agaghị agbanyụ, ọkụ agaghị agbanyụ. Ụfọdụ inverters mpụga grid na-eji mgbanwe relay, oge nwere ike ịbụ ihe karịrị milisekọnd 20, kọmputa desktọpụ nwekwara ike ịgbanyụ ma ọ bụ malitegharịa.