Loop-Shaping Based Control for Switch Mode DC-DC Power Converters
Loop-Shaping Based Control for Switch Mode DC-DC Power Converters作者机构：Universidad Politecnica de San Luis Potosí San Luis Potosí Mexico Instituto Potosino de Investigación Cientifica y Tecnologica San Luis Potosí Mexico Universidad Autonoma de San Luis Potosi San Luis Potosí Mexico
出 版 物：《Journal of Power and Energy Engineering》 (电力能源（英文）)
年 卷 期：2020年第8卷第10期
页 面：66-83页
学科分类：0810[工学-信息与通信工程] 08[工学] 081001[工学-通信与信息系统]
主 题：Renewable Energy Sources Loop-Shaping Control Power Electronic Converters Current-Mode Control
摘 要：Renewable energy sources require switching regulators as an interface to a load with high efficiency, small size, proper output regulation, and fast transient response. Moreover, due to the nonlinear behavior and switching nature of DC-DC power electronic converters, there is a need for high-performance control strategies. This work summarized the dynamic behavior for the three basic switch-mode DC-DC power converters operating in continuous conduction mode, i.e. buck, boost, and buck-boost. A controller was designed using loop-shaping based on current-mode control that consists of two feedback loops. A high-gain compensator with wide bandwidth was used in the inner current loop for fast transient response. A proportional-integral controller was used in the outer voltage loop for regulation purposes. A procedure was proposed for the parameters of the controller that ensures closed-loop stability and output voltage regulation. The design-oriented analysis was applied to the three basic switch-mode DC-DC power converters. Experimental results were obtained for a switching regulator with a boost converter of 150 W, which exhibits non-minimum phase behavior. The performance of the controller was tested for voltage regulation by applying large load changes.
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