准Z源逆变器的建模与设计  

Modeling and Design of Quasi-Z-source Inverter

作　　者：李恩虎 侯宁 LI Enhu;HOU Ning(Gresgying Digital Energy Technology Co.,Ltd.,Xi′an 712044,China)

机构地区：[1]绿能慧充数字技术有限公司,陕西西安712044

出　　处：《电工技术》2024年第17期79-81,86,共4页Electric Engineering

摘　　要：相较于传统逆变器,准Z源逆变器结构简单、优势突出,能够以单级结构实现升降压功能,在多领域被广泛应用。然而受元件非线性的影响,准Z源逆变器控制性能依赖精准数学模型的建立和补偿环路的配置。为此,对准Z源逆变器的工作原理进行分析,建立小信号数学模型,进而推导得出状态量的传递函数,最后采用零极点配置补偿方法对控制环路进行设计。经仿真分析,所建准Z源逆变器数学模型准确,设计的控制环路使系统具有较好的稳定性和抗干扰能力。Compared with conventional inverters,quasi-Z-source inverters have a simple structure and outstanding advantages.They can achieve voltage boost and reduction functions via a single-stage structure and are widely used in various fields.Due to the nonlinearity of its components,its control performance nevertheless depends on the establishment of accurate mathematical models and the configuration of compensation loops.This paper analyzes the working principle of Z-source inverter,establishes its small signal mathematical model,derives the transfer function of state variables,and further designs the control loop using zero pole configuration compensation.The established quasi-Z-source inverter mathematical model has been verified by simulative analysis to be accurate,while with respect to the designed control loop,adequate to impart good stability and anti-interference ability to the system.

关 键 词：准Z源逆变器 小信号数学模型 零极点配置补偿 

分 类 号：TM464[电气工程—电器]