I-inverter ye-Photovoltaic engekho kwigridi

Intshayelelo yeMveliso
I-inverter ye-PV engekho kwigridi sisixhobo sokuguqula amandla esityhala-sitsala amandla okufaka i-DC size siyiguqulele kumandla e-220V AC ngeteknoloji ye-inverter bridge ye-SPWM sinusoidal pulse width modulation.
Njengee-inverters eziqhagamshelwe kwigridi, ii-inverters ze-PV ezingasebenzi kwigridi zifuna ukusebenza kakuhle, ukuthembeka okuphezulu, kunye noluhlu olubanzi lwe-DC input voltage; kwiinkqubo zamandla ze-PV eziphakathi nezinkulu, imveliso ye-inverter kufuneka ibe yi-sinusoidal wave ene-distortion ephantsi.

Ukusebenza kunye neempawu
1. I-microcontroller eyi-16-bit okanye i-32-bit DSP microprocessor isetyenziselwa ulawulo.
Imo yokulawula ye-2.PWM, iphucula kakhulu ukusebenza kakuhle.
3. Adopt digital okanye LCD ukubonisa iiparameter ezahlukeneyo zokusebenza, kwaye unokuseta iiparameter ezifanelekileyo.
4. I-Square wave, i-modified wave, i-sine wave output. I-Sine wave output, i-waveform distortion rate ingaphantsi kwe-5%.
5. Ukuchaneka kokuzinziswa kombane ophezulu, phantsi komthwalo olinganisiweyo, ukuchaneka kokuphuma ngokubanzi kungaphantsi kwe-plus okanye i-minus 3%.
6. Umsebenzi wokuqalisa kancinci ukuze uphephe impembelelo ephezulu yamandla ebhetri kunye nomthwalo.
7. Ukwahlulwa kwe-transformer ephindaphindayo, ubungakanani obuncinci kunye nobunzima obulula.
8. Ixhotyiswe nge-interface yonxibelelwano ye-RS232/485 eqhelekileyo, efanelekileyo kulawulo lonxibelelwano olukude.
9. Ingasetyenziswa kwindawo engaphezulu kweemitha ezingama-5500 ngaphezu komphakamo wolwandle.
10, Ngokhuseleko loqhagamshelo olubuyela umva lokufaka, ukhuseleko lokungena kwamandla ombane, ukhuseleko lokungena kwamandla ombane, ukhuseleko lokungena kwamandla ombane, ukhuseleko lokungena kwamandla ombane, ukhuseleko lokungena kwamandla ombane, ukhuseleko lokujikeleza okufutshane, ukhuseleko lobushushu obugqithisileyo kunye neminye imisebenzi yokukhusela.

Iiparameter ezibalulekileyo zobugcisa zee-inverters ezingaphandle kwegridi
Xa ukhetha i-inverter engekho kwigridi, ngaphandle kokuqwalasela i-output waveform kunye nohlobo lwe-isolation ye-inverter, kukho iiparameter ezininzi zobugcisa ezibaluleke kakhulu, ezifana ne-system voltage, amandla okukhupha, amandla e-peak, ukusebenza kakuhle kokuguqula, ixesha lokutshintsha, njl. Ukukhethwa kwezi parameter kunempembelelo enkulu kwimfuno yombane yomthwalo.
1) I-voltage yenkqubo:
Yi-voltage yebhetri. I-voltage yokufaka ye-inverter engaphandle kwegridi kunye ne-voltage yokuphuma yesilawuli ziyafana, ngoko ke xa uyila kwaye ukhetha imodeli, qaphela ukuba iyafana nesilawuli.
2) Amandla okukhupha:
I-inverter engaphandle kwegridi yombane ineentlobo ezimbini, enye yi-expression yamandla ebonakalayo, iyunithi yi-VA, olu luphawu lwe-UPS, amandla asebenzayo ombane nawo kufuneka aphindaphinde amandla, njenge-inverter ye-off-grid eyi-500VA, amandla ombane yi-0.8, amandla asebenzayo ombane yi-400W, oko kukuthi, inokuqhuba umthwalo wokumelana we-400W, njengezibane zombane, izipheki ze-induction, njl.njl.; eyesibini yi-active power expression, iyunithi yi-W, njenge-5000W off-grid inverter, amandla asebenzayo ombane yi-5000W.
3) Amandla aphezulu:
Kwinkqubo ye-PV engekho kwigridi, iimodyuli, iibhetri, ii-inverters, imithwalo zenza inkqubo yombane, amandla okukhupha i-inverter, amiselwa ngumthwalo, eminye imithwalo engenisa amandla, njengee-air conditioners, iimpompo, njl.njl., i-motor engaphakathi, amandla okuqala aphindwe ka-3-5 amandla alinganisiweyo, ngoko ke i-inverter engaphandle kwegridi ineemfuno ezikhethekileyo zokugqithisa. Amandla aphezulu ngumthamo wokugqithisa we-inverter engaphandle kwegridi.
I-inverter inika amandla okuqalisa umthwalo, ngokuyinxenye ukusuka kwibhetri okanye kwimodyuli ye-PV, kwaye okungaphezulu kubonelelwa zizinto zokugcina amandla ngaphakathi kwi-inverter - ii-capacitors kunye nee-inductors. Ii-capacitors kunye nee-inductors zombini zizinto zokugcina amandla, kodwa umahluko kukuba ii-capacitors zigcina amandla ombane ngendlela yentsimi yombane, kwaye okukhona amandla e-capacitor emakhulu, kokukhona inokugcina amandla amaninzi. Kwelinye icala, ii-inductors zigcina amandla ngendlela yentsimi yemagnethi. Okukhona i-magnetic permeability enkulu ye-inductor core ikhulu, kokukhona i-inductance inkulu, kwaye kokukhona amandla amaninzi anokugcinwa.
4) Ukusebenza kakuhle kokuguqula:
Ukusebenza kakuhle kwenkqubo yokuguqula ngaphandle kwegridi kubandakanya iinkalo ezimbini, enye kukusebenza kakuhle komatshini ngokwawo, isekethe ye-inverter engaphandle kwegridi iyinkimbinkimbi, ukuba idlule kuguquko olunezigaba ezininzi, ngoko ke ukusebenza kakuhle kuphantsi kancinci kune-inverter eqhagamshelwe kwigridi, ngokubanzi phakathi kwama-80-90%, amandla amakhulu okusebenza kakuhle komatshini we-inverter, ukwahlukana kwamaza aphezulu kunokusebenza kakuhle kokwahlulwa kwamaza kuphezulu, ukusebenza kakuhle kombane wenkqubo nako kuphezulu. Okwesibini, ukusebenza kakuhle kokutshaja nokukhupha ibhetri, olu luhlobo lwebhetri olunolwalamano, xa ukuveliswa kwamandla e-photovoltaic kunye nokuvumelanisa amandla omthwalo, i-photovoltaic inokubonelela ngokuthe ngqo ngomthwalo oza kuwusebenzisa, ngaphandle kwesidingo sokudlula kukuguqulwa kwebhetri.
5) Ixesha lokutshintsha:
Inkqubo engekho kwigridi enomthwalo, kukho iindlela ezintathu ze-PV, ibhetri, usetyenziso, xa amandla ebhetri enganelanga, tshintshela kwimodi yosetyenziso, kukho ixesha lokutshintsha, ezinye ii-inverters ezingaphandle kwegridi zisebenzisa i-electronic switch switch, ixesha lingaphakathi kwee-millisecond ezili-10, iikhompyutha zedesktop aziyi kuvala, izibane aziyi kutsha. Ezinye ii-inverters ezingaphandle kwegridi zisebenzisa i-relay switching, ixesha linokuba ngaphezulu kwee-millisecond ezingama-20, kwaye ikhompyutha yedesktop ingavala okanye iqalise kwakhona.