Fuzzy Based Hysteresis Band Limit Controlled Active Power Filter for Non Linear Loads
نویسندگان
چکیده
This paper presents a hysteresis band control for achieving maximum benefits from these gridinterfacing inverters when installed in 3-phase 4-wire distribution systems. The inverter is controlled to perform as a multi-function device by incorporating active power filter functionality. The inverter can thus be utilized as: 1) power converter to inject power generated from RES to the grid, and 2) shunt APF to compensate current unbalance, load current harmonics, load reactive power demand and load neutral current. All of these functions may be accomplished either individually or simultaneously. With such a control, the combination of gridinterfacing inverter and the 3-phase 4-wire linear/non-linear unbalanced load at point of common coupling appears as balanced linear load to the grid. For dc voltage regulation a PI controller is used which is replace by fuzzy controller. This new control concept is demonstrated with extensive MATLAB/Simulink simulation studies. Keywords-Active power filter (APF), distributed generation (DG), distribution system, grid interconnection, power quality (PQ), renewable
منابع مشابه
Fuzzy Tuned PID Controller with D-Q-O Reference Frame Technique Based Active Power Filter
Active power filter continues to be a powerful tool to control harmonics in power systems thereby enhancing the power quality. This paper presents a fuzzy tuned PID controller based shunt active filter to diminish the harmonics caused by non linear loads like thyristor bridge rectifiers and imbalanced loads. Here Fuzzy controller provides the tuning of PID, based on firing of thyristor bridge r...
متن کاملAdaptive Hysteresis Based Fuzzy Controlled Shunt Active Power Filter for Mitigation of Harmonics
Active filters are widely employed in distribution system to reduce the harmonics produced by non-linear loads result in voltage distortion and leads to various power quality problems. In this work the simulation study of a Adaptive hysteresis based fuzzy logic controlled shunt active power filter capable of reducing the total harmonic distortion i s presented. The advantage of fuzzy control is...
متن کاملAdaptive Hysteresis Band Based Fuzzy Controlled Shunt Active Power Filter
Conventional hysteresis current controllers have the disadvantage of a variable switching frequency. This paper proposes a fuzzy hysteresis band technique for the current control for shunt active power filter (SAPF). An active harmonic filter is used to eliminate current harmonics caused by nonlinear loads. The current control strategy utilizes using a selective Filter STF method to improve pow...
متن کاملFuzzy Hysteresis Control and Parameter Optimization of a Shunt Active Power Filter
This paper presents the optimization of shunt active power filter parameters based on fuzzy logic control. The current active filter control is based on constant, fuzzy hysteresis band techniques, which are employed to derive the switching signals and also to choose the optimal value of the decoupling inductance. The DC voltage controller optimizes the energy storage of the DC capacitor, where ...
متن کاملFuzzy Based Hysteresis Current Controlled Shunt Active Power Filter for Power Conditioning
Abstract: Shunt Active power filters (SAPF) technology has emerged nowadays as a very suitable option for power quality improvement in electrical power systems control. This paper presents the simulation study of a fuzzy logic hysteresis band current controlled, three-phase SAPF to enhance power quality by harmonic elimination, power-factor correction, reactive power compensation and balancing ...
متن کامل