I-Photovoltaic off-grid inverter

Intshayelelo yeMveliso
I-PV off-grid inverter sisixhobo soguqulo lwamandla esityhala-utsalo sonyusa igalelo lamandla e-DC kwaye emva koko siyiguqule ibe yi-220V AC amandla ngebhulorho yokuguqula i-SPWM ye-sinusoidal pulse wide modulation technology.
Njengama-inverters axhunyiwe kwigridi, i-PV off-grid inverters ifuna ukusebenza kakuhle, ukuthembeka okuphezulu, kunye noluhlu olubanzi lwe-DC input voltage; kwiinkqubo zamandla e-PV ephakathi kunye nenkulu, imveliso ye-inverter kufuneka ibe yi-sinusoidal wave kunye nokuphazamiseka okuphantsi.

Ukusebenza kunye neempawu
1. I-16-bit microcontroller okanye i-32-bit DSP microprocessor isetyenziselwa ukulawula.
2.Imo yokulawula ye-PWM, iphucula kakhulu ukusebenza kakuhle.
3.Yamkela idijithali okanye iLCD ukubonisa iiparamitha zokusebenza ezahlukeneyo, kwaye unokuseta iiparamitha ezifanelekileyo.
4. I-square wave, i-wave modified wave, i-sine wave output. Imveliso yamaza e-Sine, isantya sokuguqulwa kwamaza singaphantsi kwe-5%.
5. Ukuchaneka kokuqina kombane ophezulu, phantsi komthwalo olinganisiweyo, ukuchaneka kwemveliso ngokuqhelekileyo kungaphantsi kwe-plus okanye thabatha i-3%.
6. Umsebenzi wokuqalisa kancinci ukuphepha impembelelo yangoku ephezulu kwibhetri kunye nomthwalo.
7. I-High frequency transformer isolation, ubungakanani obuncinci kunye nobunzima obulula.
8. Ixhotyiswe ngonxibelelwano oluqhelekileyo lwe-RS232/485, olulungele ulawulo lonxibelelwano olukude.
9. Ingasetyenziswa kwindawo engaphezulu kweemitha ezingama-5500 ngaphezu komphakamo wolwandle.
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Iimpawu ezibalulekileyo zobugcisa ze-off-grid inverters
Xa ukhetha i-inverter ye-off-grid, ngaphandle kokunikela ingqalelo kwi-output waveform kunye nohlobo lokuzihlukanisa lwe-inverter, kukho iiparameters ezininzi zobugcisa ezibaluleke kakhulu, ezifana ne-voltage yenkqubo, amandla aphumayo, amandla aphezulu, ukuguqulwa kwempumelelo, ixesha lokutshintsha, njl njl. Ukukhethwa kwezi parameters kunempembelelo enkulu kwimfuno yombane womthwalo.
1) Umbane wenkqubo:
Ngamandla ombane wepakethi yebhetri. I-voltage yegalelo ye-inverter ye-off-grid kunye ne-voltage ephumayo yomlawuli iyafana, ngoko xa uyila kwaye ukhetha imodeli, qaphela ukugcina okufanayo kunye nomlawuli.
2) Amandla emveliso:
I-Off-grid inverter imveliso yamandla emveliso ineentlobo ezimbini, enye yimbonakalo yamandla ecacileyo, iyunithi yi-VA, le yireferensi ye-UPS yophawu, imveliso yangempela yamandla asebenzayo nayo ifuna ukuphindaphinda into yamandla, njenge-500VA off-grid inverter, i-power factor yi-0.8, imveliso yangempela yamandla asebenzayo yi-400W, oko kukuthi, i-resistive 4 njl. eyesibini yintetho yamandla esebenzayo, iyunithi yiW, enje nge 5000W off-grid inverter, esona siphumo samandla asebenzayo yi 5000W.
3) Amandla aphezulu:
Kwinkqubo ye-PV off-grid, iimodyuli, iibhetri, ii-inverters, imithwalo yenza inkqubo yombane, i-inverter output power, igqitywe ngumthwalo, imithwalo ye-inductive, efana ne-air conditioners, iimpompo, njl. Amandla encopho ngumthamo ogqithisiweyo we-inverter ye-off-grid.
I-inverter inikeza amandla okuqalisa kumthwalo, inxalenye yebhetri okanye imodyuli ye-PV, kwaye ukugqithisa kunikezelwa ngamacandelo okugcina amandla ngaphakathi kwe-inverter - capacitors kunye ne-inductors. I-Capacitors kunye ne-inductors zombini zizixhobo zokugcina amandla, kodwa umehluko kukuba i-capacitors igcina amandla ombane ngendlela yentsimi yombane, kwaye ubukhulu becala le-capacitor, amandla amaninzi anokugcina. Ii-inductors, kwelinye icala, zigcina amandla ngendlela yemagnethi. Ubuninzi bemagnetic permeability ye-inductor core, inkulu i-inductance, kunye namandla amaninzi anokugcinwa.
4) Uguqulo olusebenzayo:
Ukusebenza koguqulo lwenkqubo yegridi engaphandle kwegridi kubandakanya imiba emibini, enye kukusebenza komatshini ngokwawo, i-off-grid inverter circuit inzima, ukuya kuguqulo olunamanqanaba amaninzi, ngoko ke ukusebenza ngokupheleleyo kungaphantsi kancinane kune-inverter edityaniswe negridi, ngokubanzi phakathi kwe-80-90%, amandla amakhulu okusebenza komatshini wokuguqula, ukusebenza kakuhle kwe-high-frequency yinkqubo yokwahlula iphezulu, i-voltage ephezulu kakhulu yokwahlulwa Okwesibini, ukusebenza kakuhle kwebhetri ukutshaja kunye nokukhupha, olu luhlobo lwebhetri lunobudlelwane, xa ukuveliswa kwamandla e-photovoltaic kunye nokuvumelanisa amandla okulayisha, i-photovoltaic inokubonelela ngokuthe ngqo umthwalo wokusetyenziswa, ngaphandle kwesidingo sokuhamba ngokuguqulwa kwebhetri.
5) Ukutshintsha ixesha:
Inkqubo ye-Off-grid kunye nomthwalo, kukho i-PV, ibhetri, i-utility iindlela ezintathu, xa amandla ebhetri engonelanga, tshintshela kwimodi yokusetyenziswa, kukho ixesha lokutshintsha, ezinye ii-inverters ze-off-grid zisebenzisa ukutshintsha kwe-electronic switching, ixesha phakathi kwe-10 millisecond, iikhomputha zedeskithophu aziyi kuvala, ukukhanya akuyi kukhanya. Abanye abaguquli begridi besebenzisa irelay switching, ixesha linokuba ngaphezu kwe-20 milliseconds, kwaye ikhompyuter yedesktop inokuvalwa okanye iqalise kwakhona.