Voltage dị n'akụkụ DC nke usoro ike anyanwụ na-abawanye ruo 1500V, na nkwalite na ntinye nke sel 210 na-ebute ihe ndị dị elu maka nchekwa eletriki nke usoro fotovoltaic dum. Mgbe usoro voltaji na-abawanye, ọ na-ebute ihe ịma aka na mkpuchi na nchekwa nke usoro ahụ, ma na-eme ka ihe ize ndụ nke nkwụsị nke mkpuchi nke ihe ndị dị na ya, wiring inverter, na circuits dị n'ime. Nke a na-achọ ihe nchebe iji wepụ mmejọ na oge na-arụ ọrụ nke ọma mgbe. ndakọrịta mmejọ na-eme.
Iji kwekọọ na akụrụngwa na ụba ugbu a, ndị na-emepụta inverter na-abawanye ntinye ugbu a nke eriri site na 15A ruo 20A. Mgbe ị na-edozi nsogbu nke ntinye 20A ugbu a, onye nrụpụta inverter mere ka imewe nke MPPT dịkwuo elu ma gbasaa ikike ịnweta eriri. MPPT ruo atọ ma ọ bụ karịa. N'ihe banyere mmejọ, eriri nwere ike inwe nsogbu nke azụ azụ ugbu a. Iji dozie nsogbu a, mgba ọkụ DC nwere ọrụ nke "enweghị ọgụgụ isi DC shutdown" apụtala dị ka oge chọrọ.
01 Ọdịiche dị n'etiti mgba ọkụ dịpụrụ adịpụ ọdịnala na mgba ọkụ DC nwere ọgụgụ isi
Mbụ niile, na omenala DC kewapụrụ mgba ọkụ nwere ike imebi n'ime gosiri ugbu a, dị ka a nominal 15A, mgbe ahụ, ọ nwere ike imebi nke ugbu a n'okpuru gosiri voltaji nke 15A na n'ime. Ọ bụ ezie na emeputa ga-akara ibu na-agbasa ike nke ikewapụ mgba ọkụ. , ọ na-adịkarịghị enwe ike imebi oge mkpirisi okirikiri.
Nnukwu ihe dị iche n'etiti mgba ọkụ dịpụrụ adịpụ na ihe nkedo sekit bụ na onye na-agbaji sekit nwere ikike imebi ihe dị mkpirikpi nke ugbu a, na ihe dị mkpirikpi na-eme ka ọ bụrụ ihe mmejọ dị ukwuu karịa nke a na-edepụta ugbu a nke onye na-agbaji sekit. ; Ebe ọ bụ na mkpirisi okirikiri nke ugbu a nke fotovoltaic DC n'akụkụ na-abụkarị ihe dịka 1.2 ugboro nke a na-edepụta ugbu a, ụfọdụ mgbanaka dịpụrụ adịpụ ma ọ bụ ihe ngbanwe ibu nwere ike imebi oge dị mkpirikpi nke akụkụ DC.
Ka ọ dị ugbu a, smart DC mgba ọkụ nke inverter na-eji, na mgbakwunye na izute asambodo IEC60947-3, na-ezutekwa ikike imebi oke nke ikike ụfọdụ, nke nwere ike mebie mmejọ nke ukwuu n'ime oke obere okirikiri ugbu a, nke ọma Ọ. na-edozi nsogbu nke eriri azụ azụ ugbu a. N'otu oge ahụ, smart DC mgba ọkụ na-ejikọta na DSP nke inverter, nke mere na njem unit nke mgba ọkụ nwere ike n'ụzọ ziri ezi na ngwa ngwa na-aghọta ọrụ ndị dị otú ahụ dị ka overcurrent nchebe na obere sekit nchebe.
Eserese eserese eletriki nke smart DC mgba ọkụ
02 Ụkpụrụ nhazi nke anyanwụ na-achọ na mgbe ọnụọgụ ntinye nke eriri nke eriri n'okpuru MPPT ọ bụla bụ ≥3, a ghaghị ịhazi nchedo fuse n'akụkụ DC. Uru nke itinye eriri inverters bụ iji ihe eji eme ihe na-enweghị fuse iji belata. ọrụ na mmezi ọrụ nke ugboro ugboro nnọchi nke fuses n'akụkụ DC. Ndị ntụgharị na-eji mgba ọkụ DC nwere ọgụgụ isi kama fuses. MPPT nwere ike itinye otu eriri atọ. N'okpuru ọnọdụ mmejọ dị oke njọ, a ga-enwe ihe ize ndụ na ugbu a nke ụdọ abụọ nke ụdọ ga-alaghachi azụ na 1 otu eriri. N'oge a, mgba ọkụ DC nwere ọgụgụ isi ga-emepe mgbanwe DC site na ntọhapụ shunt wee wepụ ya n'oge. sekit iji hụ na mwepụ ngwa ngwa nke mmejọ.
Eserese atụmatụ nke eriri MPPT azụ azụ ugbu a
Ntọhapụ shunt bụ n'ezie eriri eriri na-atụgharị gbakwunyere ngwaọrụ, nke na-etinye voltaji a kapịrị ọnụ na eriri mkpuchi shunt, na site na omume dị ka ndọta eletriki, onye na-eme mgbanwe DC na-akụda imepe breeki, na shunt tripping It. na-ejikarị na remote akpaaka ike-apụ control.Mgbe smart DC mgba ọkụ na-ahazi na GoodWe inverter, DC mgba ọkụ nwere ike tripped na meghere site inverter DSP iji kwụpụ DC. ịgbanwee sekit.
Maka ndị ntụgharị na-eji ọrụ nchebe njem shunt, ọ dị mkpa na mbụ iji hụ na njikwa njikwa nke mkpuchi shunt na-enweta ikike nchịkwa tupu ọrụ nchebe njem nke isi sekit nwere ike ijide n'aka.
03 Atụmanya ngwa nke mgba ọkụ DC nwere ọgụgụ isi
Dị ka nchekwa nke fotovoltaic DC n'akụkụ na-eji nwayọọ nwayọọ na-eleba anya karị, ọrụ nchekwa dị ka AFCI na RSD ka ekwuru na nso nso a.Smart DC mgba ọkụ dịkwa mkpa. Mgbe mmejọ mere, smart DC mgba ọkụ nwere ike iji njikwa ime obodo na njikwa njikwa zuru oke nke mgba ọkụ smart. Ka emechara omume AFCI ma ọ bụ RSD, DSP ga-ezite mgbaama njem ka ọ kpatụ mgba ọkụ ikewapụ DC DC ozugbo. Mepụta ebe nkwụsịtụ doro anya iji hụ na nchekwa nke ndị ọrụ nlekọta. Mgbe mgba ọkụ DC na-agbaji nnukwu ugbu a, ọ ga-emetụta ndụ eletrik nke mgba ọkụ. Mgbe ị na-eji mgba ọkụ DC nwere ọgụgụ isi, mmebi ahụ na-eri naanị ndụ igwe nke mgba ọkụ DC, nke na-echebe ndụ eletrik nke ọma na ike imenyụ ike DC.
Ngwa nke nwere ọgụgụ isi DC switches na-emekwa ka o kwe omume ịdabere na ntụkwasị obi "otu-igodo mmechi" nke inverter akụrụngwa na ezinụlọ ndapụta; Nke abụọ, site na imewe nke DSP akara shutdown, mgbe ihe mberede mere, DC mgba ọkụ nke inverter nwere ike ngwa ngwa na. mechie nke ọma site na mgbama DSP, na-eme ebe nkwụsịtụ mmezi a pụrụ ịdabere na ya.
04 Nchịkọta
Ngwa nke nwere ọgụgụ isi DC switches tumadi solves nchebe nsogbu nke ugbu a backfeeding, ma ma ọrụ nke remote tripping nwere ike tinye n'ọrụ ndị ọzọ na-ekesa na ezinụlọ ndapụta na-etolite a ọzọ pụrụ ịdabere na ọrụ na mmezi nkwa na melite onye ọrụ nchekwa na mberede ọnọdụ. Ikike iji mesoo mmejọ ka chọrọ ngwa na nkwenye nke smart DC switches na ụlọ ọrụ ahụ.
Oge nzipu: Feb-16-2023