Photovoltaic off-grid inverter

Kenyelletso ea Sehlahisoa
PV off-grid inverter ke sesebelisoa sa phetoho ea matla se sututsang-pull se matlafatsang matla a DC ebe se se fetola matla a 220V AC ka theknoloji ea inverter bridge SPWM sinusoidal pulse wide modulation technology.
Joalo ka li-inverters tse hokahantsoeng le grid, li-inverters tsa PV off-grid li hloka ts'ebetso e phahameng, ts'epahalo e phahameng, le mefuta e mengata e fapaneng ea motlakase oa DC;mekhoeng ea matla a PV a mahareng le a maholo, tlhahiso ea inverter e lokela ho ba leqhubu la sinusoidal le ho sotha ho fokolang.

Tshebetso le Likarolo
1. 16-bit microcontroller kapa 32-bit DSP microprocessor e sebelisetsoa ho laola.
2.PWM mokhoa oa ho laola, o ntlafatsa haholo ts'ebetso.
3.Adopt digital kapa LCD ho bonts'a maemo a fapaneng a ts'ebetso, 'me e ka beha liparamente tse amehang.
4. Leqhubu la lisekoere, leqhubu le fetotsoeng, tlhahiso ea sine wave.Sephetho sa Sine wave, sekhahla sa ho sotha ha waveform se ka tlase ho 5%.
5. Ho nepahala ha matla a matla a matla, tlas'a mojaro o lekantsoeng, ho nepahala ha tlhahiso hangata ho tlase ho feta kapa ho fokotsa 3%.
6. Ts'ebetso ea ho qala butle ho qoba tšusumetso e phahameng ea hona joale ho betri le mojaro.
7. High frequency transformer itšehla thajana, boholo bo nyenyane le boima bo bobebe.
8. E na le sebopeho se tloaelehileng sa puisano sa RS232/485, se loketseng taolo ea puisano e hole.
9. E ka sebelisoa tikolohong e kaholimo ho limithara tse 5500 ka holim'a bophahamo ba leoatle.
10, Ka ts'ireletso ea khokahano e kenang, ts'ireletso ea undervoltage ea ho kenya, ts'ireletso ea overvoltage, ts'ireletso ea overvoltage, ts'ireletso ea phallo e ngata, ts'ireletso ea potoloho e khuts'oane, ts'ireletso ea overheat le mesebetsi e meng ea ts'ireletso.

Litekanyetso tsa bohlokoa tsa tekheniki tsa li-inverter tse kantle ho grid
Ha u khetha inverter ea off-grid, ntle le ho ela hloko sebopeho sa waveform le mofuta oa ho itšehla thajana oa inverter, ho na le litekanyo tse 'maloa tsa tekheniki tse bohlokoa haholo, joalo ka motlakase oa sistimi, matla a tlhahiso, matla a tlhōrō, katleho ea phetoho, nako ea ho fetola. joalo-joalo Khetho ea liparamente tsena e na le tšusumetso e kholo tlhokong ea motlakase ea mojaro.
1) Matla a tsamaiso:
Ke voltage ea pakete ea betri.Motlakase oa ho kenya motlakase oa off-grid inverter le motlakase o hlahisoang ke molaoli o ts'oana, kahoo ha u rala le ho khetha mohlala, ela hloko ho boloka se tšoanang le molaoli.
2) Matla a tsoang:
Polelo ea matla a off-grid inverter e na le mefuta e 'meli, e' ngoe ke polelo e hlakileng ea matla, yuniti ke VA, lena ke letšoao la UPS, matla a sebele a sebetsang a boetse a hloka ho atisa matla, joalo ka 500VA off-grid inverter. , matla a matla ke 0.8, matla a sebele a hlahisoang ke 400W, ke hore, a ka khanna mojaro oa 400W, joalo ka mabone a motlakase, li-cookers tsa induction, joalo-joalo;ea bobeli ke polelo e sebetsang ea matla, yuniti ke W, joalo ka 5000W off-grid inverter, matla a sebele a hlahisoang ke 5000W.
3) Matla a phahameng:
Sistimi ea PV off-grid, li-module, libeteri, li-inverters, meroalo e theha sistimi ea motlakase, motlakase o hlahisoang ke inverter, o khethoa ke mojaro, meroalo e meng ea inductive, joalo ka li-air conditioners, lipompo, joalo-joalo. matla a ho qala ke makhetlo a 3-5 matla a lekantsoeng, ka hona, inverter ea off-grid e na le litlhoko tse khethehileng tsa ho jara.Matla a tlhōrō ke matla a mangata a motlakase oa off-grid inverter.
Inverter e fana ka matla a qalang ho mojaro, karolo e 'ngoe e tsoang ho betri kapa PV module,' me ho feteletseng ho fanoa ke likarolo tsa polokelo ea matla ka hare ho inverter - capacitors le inductors.Li-capacitor le li-inductors ke likarolo tsa ho boloka matla, empa phapang ke hore li-capacitor li boloka matla a motlakase ka mokhoa oa tšimo ea motlakase, 'me matla a maholo a capacitor, a ka boloka matla a mangata.Ka lehlakoreng le leng, li-inductors li boloka matla ka mokhoa oa matla a khoheli.Ha matla a khoheli a kenella ka matla a mantlha a inductor, ho na le matla a maholo a ho kenella, le matla a mangata a ka bolokoang.
4) Phetoho e sebetsang hantle:
Ts'ebetso ea phetoho ea sistimi ea Off-grid e kenyelletsa lintlha tse peli, e 'ngoe ke ts'ebetso ea mochini ka boyona, potoloho ea inverter ea off-grid e rarahane, ho feta ka phetoho ea mekhahlelo e mengata, ka hona, katleho ka kakaretso e tlase hanyane ho feta mochini o hokahantsoeng ke grid, ka kakaretso. lipakeng tsa 80-90%, matla a matla a mochini oa inverter a matla haholo, ho itšehla thajana ho phahameng ho feta ts'ebetso ea ho itšehla thajana ho feta lebelo la ho itšehla thajana a phahame, matla a matla a sistimi le ona a phahame.Ntlha ea bobeli, ho sebetsa hantle ha betri le ho lahla, ena ke mofuta oa betri o nang le kamano, ha motlakase oa photovoltaic le ho lumellana ha matla a mojaro, photovoltaic e ka fana ka mojaro ka ho toba ho e sebelisa, ntle le tlhokahalo ea ho feta ka phetoho ea betri.
5) Ho fetola nako:
Sistimi ea Off-grid e nang le mojaro, ho na le PV, betri, utility mekhoa e meraro, ha matla a betri a sa lekana, fetohela ho utility mode, ho na le nako ea ho fetoha, li-inverters tse ling tse off-grid li sebelisa switch switch ea elektroniki, nako ka har'a 10 milliseconds, Lik'homphieutha tsa desktop li ke ke tsa koala, mabone a ke ke a fifala.Li-inverters tse ling tsa off-grid li sebelisa relay switching, nako e kanna ea feta 20 milliseconds, mme komporo ea komporo e ka koala kapa ea qala bocha.