Suzhou Electric Appliance Research Institute
期刊號: CN32-1800/TM| ISSN1007-3175

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基于Saber的三相Vienna雙環(huán)仿真研究

來源:電工電氣發(fā)布時間:2021-10-21 13:21 瀏覽次數(shù):498

基于Saber的三相Vienna雙環(huán)仿真研究

趙瑤瑤
(宣城市信息工程學校,安徽 宣城 242099)
 
    摘 要:針對三相 Vienna 拓撲工作模態(tài)多,且變化多樣、控制復雜、設計困難的問題,分析了一種三相六開關 Vienna 變換器,實現(xiàn)電路的功率因數(shù)校正和輸出穩(wěn)壓控制。介紹了三相六開關變換器的結(jié)構(gòu)組成和工作原理,推導出變換器在 d-q 坐標系下的數(shù)學模型和小信號等效電路,分析出變換器 SVPWM 調(diào)制原理與發(fā)波方式。選用經(jīng)典 PI 算法作為電壓外環(huán)和電流內(nèi)環(huán)的主要控制策略,并詳述控制器的設計過程。利用 Saber 軟件對電路進行仿真試驗,結(jié)果表明輸入電流能夠完全跟隨輸入電壓波動,實現(xiàn)了功率因數(shù)校正,且輸出動態(tài)響應迅速,輸出電壓誤差率低。
    關鍵詞:Vienna 拓撲;變換器; Saber 軟件;PI 算法;功率因數(shù)校正
    中圖分類號:TM743 ;TN624     文獻標識碼:A     文章編號:1007-3175(2021)10-0022-05
 
Simulation of Three Phase Vienna Double Loop Based on Saber
 
ZHAO Yao-yao
(Xuancheng School of Information Engineering, Xuancheng 242099, China)
 
    Abstract: To solve the problems of multi-working modes, various changes, complex control, and difficult design of three-phase Vienna topology. This work provides a solution that designs a three-phase six switch Vienna converter. This converter could achieve the power factor correction and output voltage regulation control of the circuit.This research introduced the structure and working principle of the three-phase six-switch converter. It also deduced the mathematical model and the small-signal equivalent circuit of the converter in the d-q coordinate system and analyzed the SVPWM modulation principle and wave sending mode of the converter.This paper selected the classic PI algorithm as the main control strategy of the voltage outer loop and narrated the current inner loop and the design process of the controller.It used Saber software to simulate the circuit. The results show that the input current can completely follow the fluctuation of the input voltage. This solution can realize the power factor correction, and the output dynamic response is fast, and the output voltage error rate is low.
    Key words: Vienna topology; converter; Saber software; PI algorithm; power factor correction
 
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