Ma inverters a Photovoltaic ali ndi miyezo yolimba yaukadaulo ngati ma inverters wamba. Inverter iliyonse iyenera kukwaniritsa zizindikiro zotsatirazi kuti ziwoneke ngati chinthu choyenera.
1. Linanena bungwe Voltage Kukhazikika
Mu dongosolo la photovoltaic, mphamvu yamagetsi yopangidwa ndi selo ya dzuwa imasungidwa koyamba ndi batire, kenako imasinthidwa kukhala 220V kapena 380V yosinthana ndi inverter. Komabe, batire imakhudzidwa ndi mtengo wake komanso kutulutsa kwake, ndipo mphamvu yake yotulutsa imasiyana mosiyanasiyana. Mwachitsanzo, kwa batire yokhala ndi 12V mwadzina, mtengo wake wamagetsi ukhoza kusiyana pakati pa 10.8 ndi 14.4V (kupitilira izi zitha kuwononga batire) . Kwa inverter yoyenerera, mphamvu yolowera ikasintha mkati mwamtunduwu, kusintha kwa voteji yokhazikika sikuyenera kupitilira ± 5% ya mtengo wake, ndipo katunduyo akasintha mwadzidzidzi, kupatuka kwamagetsi sikuyenera kupitilira ± 10. % ya mtengo wake.
2. Kusokoneza kwa Waveform kwa Kutulutsa Mphamvu
Kwa ma sine wave inverters, kupotoza kwakukulu kovomerezeka kwa ma waveform (kapena ma harmonic) kuyenera kufotokozedwa. Nthawi zambiri amawonetsedwa ngati kupotoza kwa ma waveform amagetsi otulutsa, mtengo wake suyenera kupitilira 5% (gawo limodzi lotulutsa limalola 10%). Popeza kutulutsa kwamakono kwamtundu wa harmonic ndi inverter kumabweretsa zotayika zina monga eddy pakali pano pa inductive katundu, ngati kupotoza kwa ma waveform kwa inverter ndikokulirapo, kumayambitsa kutentha kwakukulu kwa zigawo zonyamula, zomwe sizingakhale bwino. chitetezo cha zida zamagetsi ndipo zimakhudza kwambiri dongosolo. magwiridwe antchito.
3. Chovoteledwa linanena bungwe pafupipafupi
Pazambiri kuphatikiza ma mota, monga makina ochapira, mafiriji, ndi zina zambiri, chifukwa ma frequency oyenera a mota ndi 50Hz, ma frequency ndi okwera kwambiri kapena otsika kwambiri, zomwe zimapangitsa kuti zida zitenthetse ndikuchepetsa magwiridwe antchito komanso moyo wautumiki. wa dongosolo. Ma frequency otulutsa ayenera kukhala okhazikika, nthawi zambiri mphamvu yamagetsi 50Hz, ndipo kupatuka kwake kuyenera kukhala mkati mwa ± 1% pansi pamikhalidwe yabwinobwino yogwirira ntchito.
4. Katundu mphamvu chinthu
Kuwonetsa kuthekera kwa inverter kunyamula katundu wochititsa chidwi kapena capacitive. Mphamvu yamphamvu ya sine wave inverter ndi 0.7 mpaka 0.9, ndipo mtengo wake ndi 0.9. Pankhani ya mphamvu inayake yolemetsa, ngati mphamvu ya inverter ili yochepa, mphamvu yofunikira ya inverter idzawonjezeka, zomwe zidzawonjezera mtengo ndikuwonjezera mphamvu yowonekera ya dera la AC la photovoltaic system. Pamene kuwonjezereka kwaposachedwa, zotayika zidzawonjezeka mosalephera, ndipo magwiridwe antchito amachepanso.
5. Inverter bwino
Kuchita bwino kwa inverter kumatanthawuza chiŵerengero cha mphamvu yotulutsa mphamvu ku mphamvu yolowera pansi pamikhalidwe yodziwika yogwirira ntchito, yowonetsedwa ngati peresenti. Kawirikawiri, mphamvu yodziwika bwino ya photovoltaic inverter imatanthawuza kukana koyera, pansi pa 80% katundu. s mphamvu. Popeza mtengo wonse wa photovoltaic system ndi wapamwamba, mphamvu ya photovoltaic inverter iyenera kukulitsidwa, mtengo wa dongosolo uyenera kuchepetsedwa, ndipo mtengo wa photovoltaic uyenera kukonzedwa bwino. Pakalipano, mphamvu zogwiritsira ntchito ma inverters akuluakulu ndi pakati pa 80% ndi 95%, ndipo mphamvu zogwiritsira ntchito magetsi otsika zimafunika kukhala osachepera 85%. Mu ndondomeko yeniyeni ya mapangidwe a photovoltaic system, osati ma inverters apamwamba kwambiri omwe amasankhidwa, koma panthawi imodzimodziyo, dongosololi liyenera kukonzedwa bwino kuti pulogalamu ya photovoltaic igwire ntchito pafupi ndi malo abwino kwambiri momwe zingathere.
6. Chovoteledwa pakali pano (kapena chidavotera mphamvu)
Imawonetsa kutulutsa kwaposachedwa kwa inverter mkati mwa gawo lamphamvu lamphamvu. Zogulitsa zina za inverter zimapereka mphamvu yotulutsa, yomwe imawonetsedwa mu VA kapena kVA. Mphamvu yovotera ya inverter ndi pamene mphamvu yotulutsa mphamvu ndi 1 (ie katundu wokwanira wotsutsa), mphamvu yamagetsi yomwe idavotera ndizomwe zimapangidwa ndi zomwe zidavotera pano.
7. Njira zodzitetezera
Inverter yokhala ndi ntchito yabwino iyeneranso kukhala ndi chitetezo chokwanira kapena miyeso yolimbana ndi zovuta zosiyanasiyana pakagwiritsidwe ntchito kwenikweni, kuti inverter yokha ndi zigawo zina zadongosolo zisawonongeke.
(1) Input undervoltage policyholder:
Mphamvu yolowera ikatsika kuposa 85% yamagetsi ovotera, inverter iyenera kukhala ndi chitetezo ndikuwonetsa.
(2) Akaunti ya inshuwaransi ya overvoltage:
Mphamvu yolowera ikakwera kuposa 130% yamagetsi ovotera, inverter iyenera kukhala ndi chitetezo ndikuwonetsa.
(3) Chitetezo chapanthawi yomweyo:
Kutetezedwa kopitilira muyeso kwa inverter kuyenera kuwonetsetsa kuchitapo kanthu pa nthawi yake pamene katunduyo ali waufupi kapena waposachedwa kuposa mtengo wovomerezeka, kuti zisawonongeke ndi kuphulika kwamphamvu. Pamene mphamvu yogwira ntchito ikupitirira 150% ya mtengo wovotera, inverter iyenera kudziteteza yokha.
(4) Chitsimikizo champhindi yochepa
Inverter yochepa-circuit chitetezo nthawi siyenera kupitirira 0.5s.
(5) Lowetsani reverse polarity chitetezo:
Pamene mizati yabwino ndi yoipa ya malo olowetsamo atembenuzidwa, inverter iyenera kukhala ndi ntchito yotetezera ndikuwonetsera.
(6) Chitetezo cha mphezi:
Inverter iyenera kukhala ndi chitetezo cha mphezi.
(7) Kuteteza kutentha, etc.
Kuphatikiza apo, kwa ma inverters opanda njira zokhazikitsira voteji, inverter iyeneranso kukhala ndi njira zodzitetezera ku overvoltage kuteteza katundu ku kuwonongeka kwa overvoltage.
8. Makhalidwe oyambira
Onetsani kuthekera kwa inverter kuyamba ndi katundu ndi ntchito panthawi yogwira ntchito. Inverter iyenera kutsimikiziridwa kuti ikuyamba modalirika pansi pa katundu wovotera.
9. phokoso
Ma Transformers, ma inductors osefera, ma switch ma electromagnetic ndi mafani pazida zamagetsi zonse zimapanga phokoso. Pamene inverter ikugwira ntchito bwino, phokoso lake siliyenera kupitirira 80dB, ndipo phokoso la inverter yaying'ono siliyenera kupitirira 65dB.
Nthawi yotumiza: Feb-08-2022
