Lits'ebetsong tse ncha tsa matla a photovoltaic, sesebelisoa sa polokelo ea matla (PCS) ke setsi sa mantlha sa phetolo e sebetsang ea matla a photovoltaic a DC hore e be matla a grid AC. Li-capacitor tsa filimi tsa YMIN, tse nang le khanyetso e phahameng ea matla, tahlehelo e fokolang, le bophelo bo bolelele, ke likarolo tsa bohlokoa bakeng sa ho ntlafatsa ts'ebetso ea li-inverters tsa photovoltaic PCS, ho thusa limela tsa matla a photovoltaic ho finyella phetoho e nepahetseng ea matla le tlhahiso e tsitsitseng. Mesebetsi ea bona ea mantlha le melemo ea tekheniki ke tse latelang:
1. "Voltage Stabilization Shield" bakeng sa DC-Link
Nakong ea ts'ebetso ea phetoho ea AC-DC ho li-inverters tsa photovoltaic PCS, bese ea DC (DC-Link) e tlas'a maqhubu a phahameng a pulse le li-spikes tsa voltage. Li-capacitor tsa lifilimi tsa YMIN li fana ka melemo ena ka:
• High-Voltage Surge Acsorption: Ho mamella matla a phahameng a 500V ho 1500V (customizable), a monya li-spikes tsa motlakase oa nakoana tse hlahisoang ke li-switch tsa IGBT / SiC, ho sireletsa lisebelisoa tsa matla ho tloha likotsing tsa ho senyeha.
• Low ESR Current Smoothing: ESR e tlase (1/10 ea aluminium electrolytic capacitors ea setso) e monya hantle maqhubu a phahameng a maqhubu a hona joale ho DC-Link, ho fokotsa tahlehelo ea matla le ho ntlafatsa katleho ea ho fetola matla.
• High-Capacity Energy Storage Buffer: Mefuta e mengata e fapaneng ea bokhoni e lumella ho tjhaja le ho qhala ka potlako nakong ea ho feto-fetoha ha motlakase oa grid, ho boloka botsitso ba motlakase oa libese tsa DC le ho netefatsa ts'ebetso e tsoelang pele ea PCS.
2. Tšireletso e Habeli ea Matla a Phahameng a Matla a Matla a Matla le Mocheso o tsitsitseng
Hangata liteishene tsa motlakase tsa PV li tobana le maemo a thata joalo ka mocheso o phahameng le mongobo o phahameng. Li-capacitor tsa lifilimi tsa YMIN li tobana le mathata ana ka meralo e ncha:
• Ts'ebetso e tsitsitseng holim'a mefuta e mengata ea mocheso: Mocheso o sebetsang o koahela -40 ° C ho 105 ° C, ka tekanyo ea ho senyeha ha capacitance e ka tlase ho 5% libakeng tse phahameng tsa mocheso, ho thibela ho theoha ha tsamaiso ka lebaka la ho fetoha ha mocheso.
• Bokhoni ba Hona Joale ba Ripple: Bokhoni ba hona joale ba ho sebetsana le Ripple bo feta makhetlo a 10 ho feta ba li-electrolytic capacitor tsa setso, ho sefa ka mokhoa o nepahetseng lerata la harmonic ho phallo ea PV le ho netefatsa hore boleng ba matla a marang-rang bo kopana le maemo a naha.
• Bophelo bo Bolelele le Tlhokomelo-Mahala: Ka nako ea bophelo ho fihlela lihora tsa 100,000, ho feta lihora tse 30,000-50,000 tsa aluminium electrolytic capacitors, sena se fokotsa litšenyehelo tsa ts'ebetso le tlhokomelo ea limela tsa matla a photovoltaic.
3. Synergy le lisebelisoa tsa SiC / IGBT
Ha litsamaiso tsa photovoltaic li ntse li fetoha ho ea ho li-voltages tse phahameng (meaho ea 1500V e fetoha e tloaelehileng), li-capacitor tsa YMIN tse tšesaane li lumellana ka botebo le li-semiconductors tsa motlakase tsa moloko o latelang:
• High-Frequency Switching Support: Moqapi o fokolang o lumellana le litšoaneleho tse phahameng tsa maqhubu a SiC MOSFETs (switching frequency> 20kHz), ho fokotsa palo ea likaroloana tse sa sebetseng le ho kenya letsoho ho miniaturization ea mekhoa ea PCS (tsamaiso ea 40kW e hloka feela li-capacitor tsa 8, ha li bapisoa le 22 bakeng sa tharollo ea silicon).
• Ntlafatso ea dv/dt Ho mamella: Ho ikamahanya le maemo ho matlafalitsoeng ho liphetoho tsa motlakase, ho thibela ho theoha ha motlakase ho bakoang ke lebelo le feteletseng la ho fetola lisebelisoa tsa SiC.
4. Boleng ba Boemo ba Tsamaiso: Matla a Matla a Ntlafetseng le Ntlafatso ea Litšenyehelo
• Sebetsa se Ntlafetseng: Moralo o tlase oa ESR o fokotsa tahlehelo ea mocheso, o matlafatsa katleho ea PCS ka kakaretso le ho eketsa haholo tlhahiso ea selemo le selemo ea matla.
• Poloko ea Sebaka: Moralo oa matla a phahameng (40% a manyane ho feta li-capacitor tse tloaelehileng) o ts'ehetsa moralo oa lisebelisoa tsa compact PCS le ho fokotsa litšenyehelo tsa ho kenya.
Qetello
Li-capacitor tsa filimi tsa YMIN, tse nang le melemo ea tsona ea mantlha ea mamello e phahameng ea motlakase, ho phahama ha mocheso o tlase, le tlhokomelo ea zero, li kopantsoe ka botebo le likarolo tsa bohlokoa tsa li-inverters tsa photovoltaic PCS, ho kenyeletsoa buffering ea DC-Link, ts'ireletso ea IGBT, le grid harmonic filtering. Ba sebeletsa e le "mohlokomeli ea sa bonahaleng" oa ts'ebetso e sebetsang hantle le e tsitsitseng ho limela tsa matla a photovoltaic. Theknoloji ea bona ha e tsamaise lits'ebetso tsa polokelo ea matla a photovoltaic feela hore e be "mahala ntle le tlhokomelo bophelong bohle ba bona," empa hape e thusa indasteri e ncha ea matla ho potlakisa phihlello ea grid parity le phetoho ea zero-carbon.
Nako ea poso: Aug-14-2025