Abstract
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.
Highlights
Switch-Mode Power Supplies (SMPS) were first developed for aerospace applications in the 60’s
Due to the nonlinear behavior and switching nature of DC-DC power electronic converters, there is a need for high-performance control strategies
A boost converter with the corresponding current-mode controller is shown in Figure 5, where the procedure outlined in Section 3 has been used
Summary
Switch-Mode Power Supplies (SMPS) were first developed for aerospace applications in the 60’s. Creased due to the many DC electrical energy applications from renewable energy sources like fuel-cell stacks, photovoltaic arrays, or wind power [1] [2] These sources require an interface to condition and regulate their output voltage before being connected to the grid. The loop stability and performance are affected by the converter parameters; they should be considered into the analysis and controller design. In this sense, several control methods have been proposed to operate SMPS properly. A current-mode controller design is given with the corresponding parameter selection criteria to ensure stability and performance for these converters.
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call