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

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基于Saber的三相Vienna双环仿真研究

来源:电工电气发布时间:2021-10-21 13:21 浏览次数:561

基于Saber的三相Vienna双环仿真研究

赵瑶瑶
(宣城市信息工程学校,安徽 宣城 242099)
 
    摘 要:针对三相 Vienna 拓扑工作模态多,且变化多样、控制复杂、设计困难的问题,分析了一种三相六开关 Vienna 变换器,实现电路的功率因数校正和输出稳压控制。介绍了三相六开关变换器的结构组成和工作原理,推导出变换器在 d-q 坐标系下的数学模型和小信号等效电路,分析出变换器 SVPWM 调制原理与发波方式。选用经典 PI 算法作为电压外环和电流内环的主要控制策略,并详述控制器的设计过程。利用 Saber 软件对电路进行仿真试验,结果表明输入电流能够完全跟随输入电压波动,实现了功率因数校正,且输出动态响应迅速,输出电压误差率低。
    关键词:Vienna 拓扑;变换器; Saber 软件;PI 算法;功率因数校正
    中图分类号:TM743 ;TN624     文献标识码:A     文章编号: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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