maxwell超級電容ppt課件(編輯修改稿)
2025-02-10 04:24 本頁面
【文章內(nèi)容簡介】 ? 可擴(kuò)展性 75 V, 81 F 超級電容模塊 4 模塊串聯(lián)驅(qū)動 300 V 35 MW風(fēng)電場的變槳距系統(tǒng) 開關(guān)盒 包含 2600F的 超級電容 Ultracapacitors l Microelectronics l HighVoltage Capacitors 能量單元驅(qū)動的叉車 ? 裝有能量單元的叉車 ? 單元系統(tǒng)級超級電容模塊 ? BOOSTCAP module: ? 48 BCAP0010 ? 112 V, 55 F ? 40 kW 尖峰電力 Ultracapacitors l Microelectronics l HighVoltage Capacitors Sizing Your System Ultracapacitors l Microelectronics l HighVoltage Capacitors 數(shù)據(jù)表 Ultracapacitors l Microelectronics l HighVoltage Capacitors 數(shù)據(jù)表 Ultracapacitors l Microelectronics l HighVoltage Capacitors 如何檢測超級電容 ? 檢測超級電容你需要 : ? 雙向電源 (supply/load) OR ? separate power supply and programmable load (constant current capable) ? voltage vs. time measurement and recording device (digital scope or other data acquisition) ? 電容和電阻 Capacitance and Resistance: 電容 Capacitance = (Id * td)/(Vw Vf) = (Id * td)/Vd ESR = (Vf Vmin)/Id Vw = initial working voltage Vmin = minimum voltage under load Id = discharge current Vf = voltage 5 seconds after removal of load. td = time to discharge from initial voltage to minimum voltage Ultracapacitors l Microelectronics l HighVoltage Capacitors 基本公式 電容的定義 : C = Q/V (1) Charge = current * time: Q = I*t C = I*t/V (1a) Solving for voltage: V = I*t/C (2) 動態(tài)電壓 : dV/dt = I/C (3) 儲存能源 E = 189。 C*V2 (4) At initial voltage Vo, Eo = 189。 C*Vo2 At final voltage Vf, Ef = 189。 C*Vf2 Delivered energy = Eo – Ef ΔE = 189。 C*(Vo2 – Vf2) (5) Ultracapacitors l Microelectronics l HighVoltage Capacitors 電壓 amp。 電流 vs. 時(shí)間 C = 15 farad。 Resr = 100 milliohm Vo = 48V。 I = 30A 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Time (sec) 20 25 30 35 40 45 50 Voltage (V) 0 5 10 15 20 25 30 35 40 45 50 Current (A) Resr + +C i Voltage Current Vo Vmin Vf V = Q/C dVesr = I*Resr dV/dt = I/C 。 dV = I*dt/C dVtotal = I*dt/C + I*Resr ΔE = 189。 C*(Vo2 – Vf2)Ultracapacitors l Microelectronics l HighVoltage Capacitors 基本模型 ? Series/Parallel configurations ? Changes capacitor size。 profiles are the same ? 串聯(lián)配置 Series configurations ? Capacitance decreases, Series Resistance increases ? Cs=Ccell/(of cells in series) Rs=Rcell*( of cells in series) ? 平行配置 Parallel configurations ? Capacitance increases, Series Resistance decreases ? CP=Ccell*( of cells in parallel) RP=Rcell/( cells in parallel) ? 受控電流 ? Use output current profile to
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