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This paper proposes a modification on the Hybrid Active Series Filter (HASF) creating a topology named Hybrid Active Var Compensator (HAVarC) suitable to manipulate, in continuous way, the displacement power factor or voltage regulation. The HAVarC is composed by a small rating Active Power Filter (APF) in series with a capacitor bank. The main objective of this topology is to control the reactive...
In this paper, a neural network based reference current computation method for active power filter (APF) control under non-ideal mains voltage with different load condition is proposed. The neural network controller has been designed to extract fundamental frequency components from non-sinusoidal and unbalanced currents. These fundamental frequency components will be used as unit templates. The APF...
Unified power quality conditioner is a powerful tool to settle the power quality problems. In reason of power devices technology promotion and their cost reduction, it is predicable that UPQC will attain wide spread usage. Therefore its lifetime and efficiency would become important issues. In this paper a control system is developed that devolves compensation of short duration and shallow depth voltage...
This paper presents and compares the performance of two controllers namely Fuzzy Logic and Proportional Integral applied to a voltage source inverter/converter operating as an active power filter. The active power filter is operated to compensate harmonics and reactive power generated by the non-linear load and power factor correction simultaneously. This work is performed in order to make an accurate...
This paper presents the optimal control of the AC currents, the DC voltage regulation, and the DC capacitor voltage balancing in a three-level three-phase neutral point clamped multilevel converter for use in power quality applications as an active power filter. The AC output currents and the DC capacitor voltages are sampled and predicted for the next sampling time using linearized models and considering...
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