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-waveform yemveliso kunye nohlobo lokuzahlula lwe-inverter, kukho iiparitha ezininzi zobugcisa ezibaluleke kakhulu, ezifana nombane wenkqubo, amandla okuphuma, amandla aphezulu, ukusebenza kakuhle kokuguqulwa, ixesha lokutshintsha, 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:
Imbonakalo yamandla ephuma kwigridi engaphandle kwegridi ineendidi ezimbini, enye yimbonakalo yamandla ecacileyo, iyunithi yiVA, olu luphawu lwereferensi ye-UPS, elona siphumo sinamandla asebenzayo nawo afuna ukuphinda-phinda into yamandla, efana ne-500VA off-grid inverter. , i-power factor yi-0.8, isiphumo sangempela samandla asebenzayo yi-400W, oko kukuthi, inokuqhuba i-400W yomthwalo wokumelana, njengezibane zombane, abapheki be-induction, njl.;eyesibini yintetho yamandla esebenzayo, iyunithi yiW, efana ne-5000W off-grid inverter, imveliso yokwenene amandla asebenzayo yi-5000W.
3) Amandla aphezulu:
Kwinkqubo ye-PV off-grid, iimodyuli, iibhetri, ii-inverters, imithwalo ibandakanya inkqubo yombane, amandla ombane ophumayo, igqitywe ngumthwalo, eminye imithwalo ekhuthazayo, efana ne-air conditioners, iimpompo, njl. amandla okuqalisa ngama-3-5 amandla alinganisiweyo, ngoko ke i-inverter ye-off-grid ineemfuno ezikhethekileyo zokulayisha ngaphezulu.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 kokuguqulwa kwenkqubo ye-Off-grid kubandakanya imiba emibini, enye kukusebenza komatshini ngokwawo, i-off-grid inverter circuit inzima, ukuya kuguqulo lwamanqanaba amaninzi, ngoko ke ukusebenza kakuhle kuncinci kune-inverter eqhagamshelwe kwigridi, ngokubanzi. phakathi kwe-80-90%, amandla amakhulu okusebenza komatshini wokuguqula, ukwahlula okuphakamileyo okuphindaphindayo kunokusebenza kokukodwa okuqhelekileyo kuphezulu, kokukhona kuphezulu ukusebenza kombane wenkqubo nako kuphezulu.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 enomthwalo, kukho i-PV, ibhetri, usetyenziso lweendlela ezintathu, xa amandla ebhetri engonelanga, tshintshela kwimowudi ye-utility, kukho ixesha lokutshintsha, ezinye ii-inverters ze-off-grid zisebenzisa i-electronic switching, ixesha phakathi kwe-10 milliseconds, iikhomputha zedesktop aziyi kuvala, ukukhanya akuyi kufinyaza.Abanye abaguquli begridi besebenzisa i-relay switching, ixesha linokuba ngaphezu kwe-20 milliseconds, kwaye ikhompyuter yedesktop inokuvalwa okanye iqalise kwakhona.