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This paper deals with power quality improvement by using a combination of passive filters and UPQC in power systems. Passive filters are a common method to compensate harmonics and reactive power. However they have drawbacks such as limited band width, the effects of system impedance on compensation characteristics. UPQC is a high efficiency solution to overcome the passive filter restricts; nevertheless...
In order to compensate more reactive power and lower the power level of the active power filter (APF), a hybrid filter system based on a combination of an APF and a thyristor switched capacitor (TSC) is presented. This system combines the good dynamic compensation performance of the APF and higher power level of the TSC. It can eliminate harmonics and compensate the power factor effectively in power...
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