Design and implementation of a new hybrid learning control strategy for three-phase UPS

This paper is concerned with high performance control of three-phase UPS system. The basic requirements of a UPS control system are mentioned. Different control techniques are classified and their performance is briefly described. A hybrid learning-adaptive controller is proposed based on the performance of existing methods. For the learning part, a Repetitive Controller (RC) is used and a Model Reference Adaptive Controller (MRAC) is selected for the adaptive part. The design of proposed RC-MRAC controller is presented and its performance is evaluated by using simulation and experiments.