Design and Implementation of a Digital Controller for DC-to-DC Power Converters

A digital signal processor (DSP) solution is proposed to control an H-bridge DC-DC isolated output power converter. The multiple mode digital controller is evaluated with an existing Westinghouse 1-kW power stage. The digital controller was developed using the dSPACE [1] rapid prototype development system and MATLAB/Simulink. It is evaluated using a real-time digital control development platform that included the actual Westinghouse converter power stage. Preliminary digital controller performance is presented that warrants continued investigation and development of this application of digital control and supports the use of the DSP as a viable component in Power Management and Distribution (PMAD) applications.