本文旨在研製一超電容與磷酸鋰鐵電池儲能電路，並以雙向直流轉換器建立能量傳遞路徑，當負載需要瞬間大量能量時，立即啟動雙向直流轉換器，促使超電容提供瞬時能量，避免電池處於大電流充放電狀態，不僅充分利用超電容快速響應特性，並可進而完成儲能系統，俾以提升電池壽命。此外本文並提出超電容之儲存電量估算方法，亦即採以步階函數概念，建立非線性超電容模型，同時萃取等效模型參數，求得電壓與儲能之特性曲線，進而建立超電容之等效電路及協助掌握超電容之儲能及釋能狀態。而經由本文對於超電容之特性測試以及超電容與電池能量間之傳遞分析，即有助於研擬超電容與電池間之最佳配置。又為驗證本文電路與電量估算方法之實務施行可行性，本文已經由模擬與實測詳以比較，測試結果應足佐證本文研製電路及所提方法之參考價值。

This thesis is aimed to develop an energy storage system consisting of lithium iron phosphate batteries cooperated with supercapacitors. In this proposed system, the bi-directional converter is served for the energy delivery. Once the load requires the high power at the instant, this converter is activated to ensure that the power supplied by the supercapactors while preventing the batteries from locating at high-current charging state, thereby increasing the lifecycles of batteries.
In addition, a method of estimating the residual energy of suprecapacitors is proposed in this thesis. Such an approach formulates the model of supercapacitors by the step function and extracts the parameters to find characteristic curves of voltages and stored energy. In this way, the equivalent circuit of supercapacitors can be found, assisting in comprehending the energy charging and discharging state. Based on the characteristics test made in this thesis and the analysis performed for the energy exchange between supercapacitors and batteries, it is then realized that the modular placement of energy storage can be optimally determined. To validate the proposed circuit and the estimation method, several testes under different scenarios have been made. Test results help solidify the reference values of the proposed approach and the designated circuits.

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