Ezinhlelweni ezintsha ze-photovoltaic zamandla, i-power storage converter (PCS) iyisikhungo esiyinhloko sokuguqulwa okuphumelelayo kwamandla e-photovoltaic DC abe amandla e-grid AC. Ama-capacitor efilimu e-YMIN, anokumelana kwawo ne-voltage ephezulu, ukulahleka okuphansi, kanye nokuphila isikhathi eside, ayizingxenye ezibalulekile zokuthuthukisa ukusebenza kwama-inverters e-photovoltaic PCS, okusiza izitshalo zamandla e-photovoltaic ukuthi zifinyelele ukuguqulwa kwamandla okuphumelelayo kanye nokukhipha okuzinzile. Imisebenzi yazo eyinhloko kanye nezinzuzo zobuchwepheshe yilezi ezilandelayo:
1. “Isivikelo Sokuzinza Kwe-Voltage” se-DC-Link
Ngesikhathi senqubo yokuguqulwa kwe-AC-DC kuma-inverter e-photovoltaic PCS, ibhasi le-DC (i-DC-Link) libhekene nemisinga yokushaya kwenhliziyo ephezulu kanye nokukhuphuka kwamandla kagesi. Ama-capacitor efilimu ye-YMIN ahlinzeka ngalezi zinzuzo ngokuthi:
• Ukumuncwa Kwe-High-Voltage: Uma ibekezelela ama-voltage aphezulu angu-500V kuya ku-1500V (angaguqulwa abe ngokwezifiso), imunca ama-voltage spikes esikhashana akhiqizwa ama-switch e-IGBT/SiC, ivikela amadivayisi kagesi ezingozini zokuphuka.
• Ukushelela Kwamanje kwe-ESR Ephansi: I-ESR Ephansi (1/10 efana neye-capacitors ye-aluminium electrolytic yendabuko) imunca kahle i-high-frequency ripple current ku-DC-Link, inciphisa ukulahleka kwamandla futhi ithuthukise ukusebenza kahle kokuguqulwa kwamandla.
• I-High-Capacity Energy Storage Buffer: Ububanzi bomthamo buvumela ukushaja nokukhipha ngokushesha ngesikhathi sokushintshashintsha kwamandla kagesi, kugcina ukuzinza kwamandla kagesi ebhasi le-DC kanye nokuqinisekisa ukusebenza okuqhubekayo kwe-PCS.
2. Ukuvikelwa Okubili Kokumelana Ne-Voltage Ephakeme Nokuqina Kokushisa
Iziteshi zikagesi ze-PV zivame ukubhekana nezimo ezinzima njengokushisa okuphezulu kanye nomswakama ophezulu. Ama-capacitor efilimu e-YMIN ahlangabezana nalezi zinselele ngemiklamo emisha:
• Ukusebenza Okuzinzile Ebangeni Lokushisa Elibanzi: Amazinga okushisa okusebenza amboza -40°C kuya ku-105°C, ngesilinganiso sokuwohloka kwamandla esingaphansi kuka-5% ezindaweni ezishisa kakhulu, okuvimbela isikhathi sokungasebenzi kwesistimu ngenxa yokushintshashintsha kwezinga lokushisa.
• Amandla Okusebenza Kwamanje Okufana Ne-Ripple: Amandla okuphatha amandla kagesi okufana ne-Ripple aphindwe kayishumi kunama-capacitor e-electrolytic avamile, ahlunga ngempumelelo umsindo we-harmonic ekuphumeni kwe-PV futhi aqinisekise ukuthi ikhwalithi yamandla axhunywe kugridi ihlangabezana nezindinganiso zikazwelonke.
• Ukuphila Okude Nokunganakekeli: Njengoba isikhathi sokuphila singamahora afinyelela ku-100,000, sidlula kakhulu amahora angu-30,000-50,000 ama-capacitor e-aluminium electrolytic, lokhu kunciphisa izindleko zokusebenza nokugcinwa kwezitshalo zamandla ze-photovoltaic.
3. Ukusebenzisana namadivayisi e-SiC/IGBT
Njengoba izinhlelo ze-photovoltaic zithuthuka ziye kuma-voltage aphezulu (ukwakheka kwe-1500V kuba yinto evamile), ama-capacitor e-YMIN thin-film ahambisana kakhulu nama-semiconductors wamandla esizukulwane esilandelayo:
• Usekelo Lokushintsha Imvamisa Ephakeme: Umklamo we-inductance ephansi uhambisana nezici zemvamisa ephezulu yama-SiC MOSFET (imvamisa yokushintsha > 20kHz), okunciphisa inani lezingxenye ezingasebenzi futhi okufaka isandla ekwenzeni izinhlelo ze-PCS zibe zincane (uhlelo lwe-40kW ludinga ama-capacitor ayi-8 kuphela, uma kuqhathaniswa nama-22 ezixazululo ezisekelwe ku-silicon).
• Ukumelana ne-dv/dt okuthuthukisiwe: Ukuzivumelanisa nezimo okuthuthukisiwe nezinguquko ze-voltage, okuvimbela ukunyakaza kwe-voltage okubangelwa isivinini sokushintsha ngokweqile kumadivayisi e-SiC.
4. Inani Lezinga Lesistimu: Ukusebenza Kahle Kahle Kwamandla Nokuthuthukiswa Kwezindleko
• Ukusebenza Kahle Okuthuthukisiwe: Umklamo we-ESR ophansi unciphisa ukulahleka kokushisa, ukhulisa ukusebenza kahle kwe-PCS iyonke futhi ukhulisa kakhulu ukukhiqizwa kwamandla kwaminyaka yonke.
• Ukonga Isikhala: Umklamo wamandla aphezulu (ongaphansi kuka-40% kune-capacitor yendabuko) usekela ukwakheka kwemishini ye-PCS encane futhi kunciphisa izindleko zokufaka.
Isiphetho
Ama-capacitor efilimu i-YMIN, anezinzuzo zawo eziyinhloko zokubekezelela i-voltage ephezulu, ukunyuka kwezinga lokushisa eliphansi, kanye nokugcinwa okungu-zero, ahlanganiswe ngokujulile ezicini ezibalulekile zama-inverters e-photovoltaic PCS, okuhlanganisa i-DC-Link buffering, ukuvikelwa kwe-IGBT, kanye nokuhlunga kwe-grid harmonic. Asebenza “njengomqaphi ongabonakali” wokusebenza okuphumelelayo nokuzinzile ezitshalweni zamandla e-photovoltaic. Ubuchwepheshe bawo abugcini nje ngokuqhubekisela phambili izinhlelo zokugcina amandla e-photovoltaic “ezingenakulungiswa kuyo yonke impilo yazo,” kodwa futhi kusiza imboni entsha yamandla ukusheshisa ukufezwa kokulingana kwegridi kanye noshintsho lwe-zero-carbon.
Isikhathi sokuthunyelwe: Agasti-14-2025