Development of fuzzy control of series-parallel loaded resonant converter-simulation and experimental evaluation

This paper presents simulation and real time implementation of fuzzy logic controller for a high frequency soft-switched DC-DC converter for applications especially in distributed energy generation systems like solar systems, vertical axis aero-generator and fuel-cell power systems. This converter is widely used to achieve reduction in size of the passive components of the converter such as inductors, capacitors and transformers. Control algorithm is developed in this work to ensure tracking of the reference voltage and rejection of system disturbances by successive measurements of the converter output voltage at certain time instants within a conduction period. The main objectives of this work are (i) development of Fuzzy Logic Control(FLC) of series-parallel loaded resonant converter using MATLAB(Version 7.01) software (ii) TMS320F2407 DSP based hardware implementation of FLC and (iii) evaluation of the controllerpsilas performances. The simulation and experimental results are presented and they validate the effectiveness of the proposed scheme since it is found that the control developed provides fast response and good performance.