Photovoltaic off-grid inverter

Kumenyekanisha ibicuruzwa
PV off-grid inverter nigikoresho cyo guhindura imbaraga gisunika-gukurura cyongera ingufu za DC hanyuma ikayihindura mumashanyarazi ya 220V ikoresheje ikiraro cya inverter SPWM sinusoidal pulse ubugari bwa tekinoroji.
Nka grid-ihuza inverter, PV off-grid inverters isaba gukora neza, kwizerwa cyane, hamwe nurwego runini rwa DC yinjiza voltage; muri sisitemu yo hagati ya nini nini nini ya PV, ibisohoka muri inverter bigomba kuba umuyaga wa sinusoidal hamwe no kugoreka gake.

Imikorere n'ibiranga
1. Microcontroller ya 16-bit cyangwa 32-bit ya DSP microprocessor ikoreshwa mugucunga.
2．PWM igenzura, itezimbere cyane imikorere.
3．Kwemeza imibare cyangwa LCD kugirango ugaragaze ibipimo bitandukanye, kandi urashobora gushiraho ibipimo bifatika.
4. Umuhengeri wa kare, wahinduwe umuraba, sine yasohotse. Sine isohoka, igipimo cyo kugoreka imiyoboro iri munsi ya 5%.
5.
6. Buhoro buhoro gutangira imikorere kugirango wirinde ingaruka zikomeye kuri bateri no kwikorera.
7. Umuvuduko mwinshi wa transformateur kwigunga, ubunini buto nuburemere bworoshye.
8. Bifite ibikoresho bisanzwe byitumanaho RS232 / 485, byoroshye kugenzura itumanaho rya kure.
9. Irashobora gukoreshwa mubidukikije hejuru ya metero 5500 hejuru yinyanja.
10.

Ibyingenzi byingenzi bya tekinike ya off-grid inverters
Mugihe uhisemo off-grid inverter, usibye kwitondera ibyasohotse kumurongo hamwe nubwoko bwa inverter, hari ibipimo byinshi bya tekiniki nabyo bifite akamaro kanini, nka sisitemu ya voltage, ingufu zisohoka, imbaraga zimpinduka, gukora neza, guhinduranya igihe, nibindi. Guhitamo ibyo bipimo bigira ingaruka zikomeye kumashanyarazi asabwa.
1) Umuvuduko wa sisitemu:
Ni voltage ya paki ya bateri. Iyinjizamo voltage ya off-grid inverter hamwe nibisohoka voltage yumugenzuzi ni kimwe, mugihe rero mugushushanya no guhitamo icyitegererezo, witondere kugumana kimwe numugenzuzi.
2) Imbaraga zisohoka:
Off-grid inverter isohora imbaraga imvugo ifite ubwoko bubiri, bumwe nuburyo bugaragara bwerekana imbaraga, igice ni VA, iyi ni ikimenyetso cya UPS, imbaraga nyazo zisohoka imbaraga nazo zigomba kugwiza ibintu byamashanyarazi, nka 500VA off-grid inverter, ibintu byamashanyarazi ni 0.8, imbaraga zikora zisohoka ni 400W, nukuvuga ko zishobora gutwara 400W umutwaro urwanya imbaraga, nkamashanyarazi, induction; icya kabiri nigikorwa cyimbaraga zigaragaza, igice ni W, nka 5000W off-grid inverter, ibyasohotse mubyukuri imbaraga ni 5000W.
3) Imbaraga zo hejuru:
Muri sisitemu ya PV off-grid, modules, batteri, inverter, imizigo igizwe na sisitemu y'amashanyarazi, ingufu za inverter zisohoka, bigenwa numutwaro, imizigo imwe n'imwe yindimu, nka konderasi, pompe, nibindi, moteri imbere, imbaraga zo gutangira zikubye inshuro 3-5 imbaraga zapimwe, bityo inverter ya off-grid ifite ibisabwa byihariye kuburemere burenze. Imbaraga zimpanuka nubushobozi burenze urugero bwa off-grid inverter.
Inverter itanga imbaraga zo gutangira umutwaro, igice kiva muri bateri cyangwa moderi ya PV, naho ikirenga gitangwa nibikoresho bibika ingufu imbere muri inverter - capacator na inductor. Imiyoboro hamwe na inductor byombi bigize ibikoresho byo kubika ingufu, ariko itandukaniro nuko capacator zibika ingufu zamashanyarazi muburyo bwumuriro wamashanyarazi, kandi nubushobozi bunini bwa capacitor, niko imbaraga zishobora kubika. Inductors, zibika ingufu muburyo bwa magneti. Ninini nini ya magnetiki yimikorere ya inductor, niko inductance nini, nimbaraga nyinshi zishobora kubikwa.
4) Guhindura imikorere:
Sisitemu yo guhindura imikorere ya grid ikubiyemo ibintu bibiri, kimwe nubushobozi bwimashini ubwayo, imiyoboro ya off-grid inverter iragoye, kugirango inyuze mubyiciro byinshi, bityo rero muri rusange imikorere iri munsi gato ugereranije na enterineti ihujwe na enterineti, muri rusange hagati ya 80-90%, imbaraga nyinshi zo gukora imashini zikoresha inverteri, niko hejuru ya sisitemu ya voltage ikora neza. Icya kabiri, imikorere yo kwishyuza bateri no gusohora, ubu ni ubwoko bwa bateri ifitanye isano, mugihe amashanyarazi yumuriro wamashanyarazi hamwe noguhuza imbaraga, gufotora birashobora gutanga umutwaro wo gukoresha, bitabaye ngombwa ko unyura mubihinduranya.
5) Guhindura igihe:
Sisitemu yo hanze ya gride ifite umutwaro, hariho PV, bateri, ikoresha uburyo butatu, mugihe ingufu za bateri zidahagije, hindura uburyo bwingirakamaro, hariho igihe cyo guhinduranya, hari inverters zimwe na zimwe zikoresha uburyo bwo guhinduranya ibyuma bya elegitoronike, igihe kiri muri milisegonda 10, mudasobwa desktop ntizizimya, itara ntirizima. Inverters zimwe zitari grid zikoresha relay guhinduranya, igihe gishobora kuba kirenga milisegonda 20, kandi mudasobwa ya desktop irashobora gufunga cyangwa gutangira.