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基于DPS的雙有源橋DC-DC變換器回流功率優(yōu)化控制

來源：電工電氣發(fā)布時間：2024-02-01 13:01 瀏覽次數(shù)：449

基于DPS的雙有源橋DC-DC變換器回流功率優(yōu)化控制

許宇安，張曉虎

(湖南工業(yè)大學(xué) 電氣與信息工程學(xué)院, 湖南株洲 412007)

摘要：針對雙有源橋(DAB)DC-DC變換器進(jìn)行回流功率優(yōu)化研究，在運(yùn)用傳統(tǒng)雙重移相控制(DPS)進(jìn)行調(diào)制，變壓器兩側(cè)的輸入電壓跟輸出電壓不匹配時，回流功率會顯著增大。提出一種雙重移相的多目標(biāo)優(yōu)化控制方法，對雙重移相控制的工作原理進(jìn)行分析，推導(dǎo)出對應(yīng)的輸出功率和回流功率的關(guān)系式，以此搭建數(shù)學(xué)模型，并基于該模型對回流功率進(jìn)行優(yōu)化；以 KKT 作為條件，針對回流功率的最小化問題，解出內(nèi)外移相角的最優(yōu)組合；為了迅速改變當(dāng)前的傳輸功率，通過虛擬電壓補(bǔ)償方法來實(shí)現(xiàn)，從而達(dá)到優(yōu)化系統(tǒng)回流功率的目標(biāo)；通過 MATLAB/Simulink 仿真對該方案與傳統(tǒng) SPS(單移相控制) 方案、傳統(tǒng) DPS 方案進(jìn)行對比分析，驗(yàn)證了該方案的有效性及優(yōu)越性。

關(guān)鍵詞： 雙有源橋變換器；雙重移相；回流功率；優(yōu)化控制

中圖分類號：TP212 文獻(xiàn)標(biāo)識碼：A 文章編號：1007-3175(2024)01-0010-06

Optimal Control of Backflow Power of Dual-Active Bridge

DC-DC Converter Based on DPS

XU Yu-an, ZHANG Xiao-hu

（College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou 412007,China）

Abstract: For the research of backflow power optimization of Dual-Active Bridge (DAB) DC-DC converter, when the traditional Dual-Phase Shift (DPS) control method is used for modulation, the backflow power will significantly increase when the input voltage on both sides of the transformer does not match the output voltage. Based on the above problems, a multi-objective optimization control method with dual-phase shifting is proposed in this paper. Firstly, the working principle of the dual phase-shift control is analyzed, and the relationship between the corresponding output power and the reflow power is derived, so as to build a mathematical model, and the reflow power is optimized based on the model. Next, with KKT(Karush-Kuhn-Tucker) as the condition, aiming at the minimization of backflow power, the optimal combination of internal and external phase shift angles is solved. Then, in order to quickly change the current transmission power, the virtual voltage compensation method is used to achieve the goal of optimizing the system backflow power. Finally, the effectiveness and superiority of the scheme are verified by comparing and analyzing the scheme with the traditional SPS(Single-Phase Shift)scheme and the traditional DPS scheme by MATLAB/Simulink simulation.

Key words: dual-active bridge converter; dual-phase shift; backflow power; optimal control

參考文獻(xiàn)

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