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Research Article Open Access
Power quality problem causes adverse effects on utilities and customers. Among the various power quality problems the harmonics have been the most discussed because of their undesirable effects on power system. The use of active filters for power quality improvement is widely adopted these days. But the performance of active power filter mainly depends on the control technique. With the availability of various control schemes it becomes confusing to choose the best one. This paper presents a comparative study of various control schemes and discusses the superiority of high performance controller for active power filter.