【摘要】：為解決現(xiàn)有配電自動化終端電源存在使用壽命短及維護(hù)困難的問題,提出了一種基于超級電容器(SC)的智能直流不間斷電源方案。采用升壓變換器降低超級電容器的工作電壓,從而提高電容器儲能的利用率,延長失電情況下電源的待機(jī)工作時間;根據(jù)超級電容器最小工作電壓與剩余能量的關(guān)系,確定了超級電容器最小有效工作電壓;根據(jù)變換器的期望輸出功率、失電待機(jī)時間及超級電容器的最小工作電壓,確定了超級電容器容量;通過對升壓變換器最大輸出紋波電壓進(jìn)行分析,對其電感及輸出濾波電容的進(jìn)行了優(yōu)化設(shè)計(jì)。實(shí)驗(yàn)結(jié)果驗(yàn)證了所提方案的可行性。
[Abstract]:In order to solve the problems of short service life and difficult maintenance of the existing distribution automation terminal power supply, an intelligent DC uninterruptible power supply scheme based on supercapacitor (SC) is proposed. The boost converter is used to reduce the working voltage of the supercapacitor, so as to improve the utilization rate of the capacitor energy storage and prolong the standby working time of the power supply under the condition of power loss. According to the relationship between the minimum working voltage of the supercapacitor and the remaining energy, the minimum effective working voltage of the supercapacitor is determined. According to the expected output power of the converter, the standby time of power loss and the minimum operating voltage of the supercapacitor, the capacity of the supercapacitor is determined, and the inductance and output filter capacitance of the boost converter are optimized by analyzing the maximum output ripple voltage of the boost converter. The experimental results verify the feasibility of the proposed scheme.
【作者單位】： 西安科技大學(xué)電氣與控制工程學(xué)院;陜西電力科學(xué)研究院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(50977077,51277149)~~
【分類號】：TM53;TM76

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