An Adaptive Noise Canceling Method for Single-Phase Unified Power Quality Conditioner

The most important problems related to unified power quality conditioner (UPQC) control is that of finding a method which can obtain an exact harmonic reference signal for control aim, particularly in the practical case where the harmonics and the system frequency of a power system are time changing. In this paper, application of adaptive noise canceling (ANC) theory in UPQC is presented. It uses a primitive input including the corrupted signal and a reference input correlated with the fundamental component of the system voltage. The reference input is adaptively filtered and deducted from the primary input to obtain the desired control reference signal. It is verified by the simulation results