Abstract
The growing interest in power quality has led to a variety of devices of mitigating power quality problems. Integrating the character of parallel power quality compensator and series power quality compensator, unified power quality conditioner (UPQC) has generally been accepted as a new electric power quality conditioner which has a good development prospect. A new harmonic signal detection algorithm of UPQC which abandons original vector transformation and low pass filter aiming at measuring and compensating for reactive power and harmonic current is proposed in this paper. Fuzzy controller based on particle swarm optimization is discussed for its character of simple computation and high measurement accuracy. Simulation is used to verify the control concepts.
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