Loop-Shaping Based Control for Switch Mode DC-DC Power Converters

• 作者: Diego Langarica-Cordoba Jesus Leyva-Ramos Luis Humberto Diaz-Saldierna Ma Guadalupe Ortiz-Lopez
• 来源期刊: 电力能源(英文)
• 学科: 工学
• 关键词: Renewable Energy Sources Loop-Shaping Control Power Electronic Converters Current-Mode Control
• 年，卷（期）: 2020,（10）
• 页码范围: 66-83
• 页数: 18页
• 分类号: TN8

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, </span><i><span style="font-family:Verdana;">i.e.</span></i><span style="font-family:Verdana;"> 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 proce</span><span style="font-family:Verdana;">dure was proposed for the parameters of the controller that ensures closed-loop</span><span style="font-family:Verdana;"> 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.