Vulovic, Marko2014-03-142014-03-142010-11-05etd-12032010-174203http://hdl.handle.net/10919/35934A brief analysis of the nonresonant-coupled parallel resonant converter is performed. The converter is modeled and a reference classical analog controller is designed and simulated. Infrastructure required for digital control of the converter (including anti-aliasing filters and a modulator) is designed and a classical digital controller is designed and simulated, yielding a ~30% degradation in control bandwidth at the worst-case operating point as compared with the analog controller. Based on the strong relationship observed between low-frequency converter gain and operating point, a gain-scheduled digital controller is proposed, designed, and simulated, showing 4:1 improved worst-case control bandwidth as compared with the analog controller. A complete prototype is designed and built which experimentally validates the results of the gain-scheduled controller simulation with good correlation. The three approaches that were investigated are compared and conclusions are drawn. Suggestions for further research are presented.In Copyrightinductorless output filterDC-DC switching converternon resonant coupledgain schedulingparallel resonant converterhigh frequency digital controlThesishttp://scholar.lib.vt.edu/theses/available/etd-12032010-174203/