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准Z源逆变器的建模与设计

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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.
Modeling and Design of Quasi-Z-source Inverter
Compared with conventional inverters,quasi-Z-source inverters have a simple structure and outstanding advan-tages.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 ac-curate 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 fur-ther designs the control loop using zero pole configuration compensation.The established quasi-Z-source inverter mathe-matical model has been verified by simulative analysis to be accurate,while with respect to the designed control loop,ade-quate to impart good stability and anti-interference ability to the system.

quasi-Z-source invertersmall signal mathematical modelzero pole configuration compensation

李恩虎、侯宁

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绿能慧充数字技术有限公司,陕西 西安 712044

准Z源逆变器 小信号数学模型 零极点配置补偿

2024

电工技术
重庆西南信息有限公司(原科技部西南信息中心)

电工技术

影响因子:0.177
ISSN:1002-1388
年,卷(期):2024.(17)