A Novel Control Algorithms for Active front end Converter

摘要

A number of control algorithms have been developed for load compensation using active front end (AFE) converter. Choice of an algorithm according to the system therefore, becomes a topic of interest for the researchers. In this paper, three control algorithms viz. instantaneous p-q theory, average unity power factor (AUPF) theory and instantaneous global control theory (IGCT) are compared for different operating conditions of distribution system. The cases considered for system operation are load with balanced source, load with unbalanced source and load with non-sinusoidal balanced source. The system is simulated on MATLAB platform and the performance is evaluated by considering the source current total harmonic distortion (THD_I) and the total distortion content (TDC). The results show that IGCT control algorithm is able to perform well and improve system performance over other algorithms.