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    Non kondansateur ak fòmil kalkil

     

    C (F): kapasite nominal superkondansateur la;


    R (Ohms): nominal rezistans entèn nan supercapacitor la;  

    ESR (Ohms): ekivalan seri rezistans anba 1KZ;   

    Vwork (V): vòltaj nòmal k ap travay 

    Vmin (V): koupe vòltaj k ap travay;  

    t (s): tan k ap travay kontinyèl ki nesesè nan kous la;   

    Vdrop (V): gout nan vòltaj total nan fen egzeyat oswa segondè batman kè aktyèl;

     

    Mwen (A): Kouran chaj; Fòmil kalkil apwoksimatif kapasite super kondansateur, enèji ki nesesè pou kenbe = enèji redwi pa kondansateur super la. Enèji ki nesesè pandan peryòd la kenbe = 1 / 2I (Vwork + Vmin) t; Supercapacitor enèji redwi = 1 / 2C (Vwork2-Vmin2), Se poutèt sa, kapasite li ka jwenn (inyore gout nan vòltaj ki te koze pa IR) C = (Vwork + Vmin) * I * t / (Vwork2 -Vmin2) Yon egzanp se jan sa a : Pou egzanp, nan yon sistèm aplikasyon sèl-chip, se yon kondansateur super itilize kòm yon ekipman pou pouvwa backup. Apre yon echèk pouvwa, yon kondansateur super bezwen yo dwe itilize yo kenbe yon kouran de 100 mA pou 10 segonn. 4.2V, Lè sa a, ki kantite supercapacitor ki nesesè asire operasyon an nòmal nan sistèm lan? Li kapab li te ye nan fòmil ki anwo la a: Travay kòmanse vòltaj Vwork = 5V Travay koupe vòltaj Vmin = 4.2V Travay tan t = 10s Travay ekipman pou pouvwa I = 0.1A Lè sa a, kapasite ki nesesè yo se:  

     

    C = (Vwork + Vmin) * I * t / (Vwork2 -Vmin2) = (5 + 4.2) * 0.1 * 10 / (52 -4.22) = 1.25F Selon rezilta kalkil la, ou ka chwazi 5.5V 1.5F condensateur pou satisfè bezwen yo Up.

     

    Egzanp: Sipoze ke vòltaj la k ap travay nan kondwi a kasèt se 5V ak vòltaj la san danje k ap travay se 3V. Si motè DC a mande pou 0.5A kenbe pou 2 segonn (li ka travay san danje), ki kantite super kondansateur yo ta dwe itilize? Solisyon: C = (Uwork + Umin) Li / (Uwork * Uwork -Umin * Umin) = (5 + 3) * 0.2 * 2 / (5 * 5-3 * 3 = 0.5F Paske vòltaj la nan 5V depase kondansateur a sèl Se poutèt sa, de kondansateur ka konekte nan seri.Si de kondansateur ki idantik yo konekte nan seri, vòltaj la nan chak kondansateur se vòltaj la nominal nan 2.5V.

     

     

     

     

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