Digital Control of Bidirectional LLC Resonant Converters* Minjun Park Graduate School of Electronics Engineering, Graduate School, Kyungpook National University, Taegu, South Korea (Supervised by Professor Byungcho Choi)

 (Abstract)
This thesis presents the dynamic analysis and compensator design of digitally controlled bidirectional LLC resonant dc-to-dc converter. The digital control scheme employs an additional A/D feedback from the current and voltage of the resonant tank network to overcome the limitation of the existing analog control. The superiority of the digital control over the analog control is verified using an experimental 300 W bidirectional LLC resonant dc-to-dc converter. The digital compensator is designed by emulation approach using bilinear transform. Both of the controllers are verified using PSIM simulation and experimental of prototype hardware.
* A thesis submitted to the Council of the Graduate School of Kyungpook National University in partial fulfillment of the requirements for the degree of Master of Science in December 2013