scholarly journals Harmonics Mitigation Techniques in Renewable Energy Systems using Shunt Active Power Filter

2020 ◽  
Vol 9 (5) ◽  
pp. 377-381
Keyword(s):  
Power Quality ◽  
Distribution System ◽  
Fuzzy Logic Controller ◽  
Active Power Filter ◽  
Active Power ◽  
Active Filter ◽  
Nonlinear Load ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Simulation Results

This paper depicts the methodology of improving power quality at load end is connected with renewable source of energy for power generation. The excessive of power physics devices in distribution system has evolved the matter of power quality. Shunt active power filter (SAPF) acts as a current supply and suppresses the harmonics by introducing the same amount of compensating opposite harmonics component along with common coupling. Simulation design of SAPF based on d-q model is implemented using MATLAB/simulink Toolbox. It explores the modelling of a Proportional Integral (PI) and fuzzy logic controller (FLC) based, SAPF for a 3 wire network to compensate current harmonics fed to a nonlinear load. The proposed model can be validated and its robustness will be checked through the simulation results. Simulation results illustrate that the logic based active filter out performs the PI based shunt active filter.

scholarly journals Performance Enhancement of Shunt Active Power Filter Application using Adaptive Neural Network

2021 ◽  
Author(s):  
Annu Govind ◽  
Vijay Kumar Tayal ◽  
prakash Kumar
Keyword(s):  
Neural Network ◽  
Power Quality ◽  
Active Power Filter ◽  
Active Power ◽  
Voltage Source ◽  
Adaptive Neural Network ◽  
Nonlinear Load ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Three Phase

Adaptive neural network (ANN) topology-based control is proposed in this paper for three phase three wire shunt active power filter (SAPF) application. The proposed controller improves power quality and compensates harmonic components. The system includes a current controlled voltage source inverter (CC-VSI) using three phase insulated gate bipolar transistors (IGBT), a DSP module for generating regulated pulse width modulated (PWM) pulse and reference DC bus. The increase in nonlinear load applications has raised power quality issues. SAPF has emerged as one of the best solutions to improve power quality. Application of ANN in SAPF eliminates the need for unit template generation and the tuning requirement of phase locked loop (PLL), as required in traditional SAPF. The proposed ANN based SAPF can be dynamically regulated for minimum harmonic contamination. The results were obtained and verified in Matlab/ Simulink platform.

scholarly journals Enhancement of power quality using microprocessor based shunt active power filter for unbalanced load

2020 ◽  
Vol 10 (4) ◽  
pp. 3393
Author(s):  
Madhu B. R. ◽  
Dinesh M. N. ◽  
Tsewang Thinlas ◽  
Deril Menezes
Keyword(s):  
Induction Motor ◽  
Power Quality ◽  
Single Phase ◽  
Reactive Power ◽  
Active Power Filter ◽  
Active Power ◽  
Nonlinear Load ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Unbalanced Load

Power quality is the most significant factor of power sector. The end user equipment such as induction motor, inverters, rectifiers inject harmonics into power system that influences the quality of power delivered. The presence of harmonics forces the use of instantaneous reactive power theory to calculate instantaneous power that helps in finding the compensating currents to eliminate harmonics. The control action required by active filter is accomplished by STM32F303RET6 microcontroller. Single phase induction motor is used as a dynamic nonlinear load in one of the three phases and resistive loads on the other two phases. TRIAC based RC triggering circuit was used to control the single phase induction motor. This paper presents the simulation and hardware implementation of shunt active power filter for 3 phase 4 wire unbalanced system. The hardware results show that THD in the source side has been reduced from 50.7% to 9.6% by implementing the SAPF.

Power Quality Improvement using Improved Approximated Fuzzy Logic Controller for Shunt Active Power Filter

2014 ◽  
pp. 310-332
Author(s):  
Asheesh K. Singh ◽  
Rambir Singh
Keyword(s):  
Fuzzy Logic ◽  
Power Quality ◽  
Fuzzy Logic Controller ◽  
Dynamic Performance ◽  
Active Power Filter ◽  
Active Power ◽  
Absolute Deviation ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Power Quality Improvement

This chapter presents the design approach of an Improved Approximated Simplest Fuzzy Logic Controller (IASFLC). A cascade combination of simplest 4-rule Fuzzy Logic Controller (FLC) and an nth degree polynomial is proposed as an IASFLC to approximate the control characteristics of a 49-rule FLC. The approximation scheme is based on minimizing the sum of square errors between the control outputs of a 49-rule FLC and a simplest 4-rule FLC in the entire range of Universe Of Discourse (UOD). The coefficients of compensating polynomial are evaluated by solving instantaneous square error equations at various test points in the entire UOD. This IASFLC maps the output of a 49-rule FLC with absolute deviation of less than 5%. The proposed IASFLC is used to control the dc link voltage of a three-phase shunt Active Power Filter (APF). A detailed analysis is performed during transient and steady state conditions to check Power Quality (PQ) and dynamic performance indices under randomly varying balanced and unbalanced loading conditions. The performance of proposed IASFLC is compared with a 49-rule FLC and Approximated Simplest Fuzzy Logic Controller (ASFLC) based on minimization of the deviation at central values of Membership Functions (MFs). It is found comparatively better for harmonic and reactive compensation with a comparable dynamic response. The memory requirement and computational time of proposed IASFLC are even lesser than the ASFLC.

scholarly journals THE UNIFIED POWER QUALITY CONDITIONER: A REVIEW

2022 ◽  
Vol 10 (1) ◽  
pp. 05-12
Author(s):  
Siddhant Tiwari ◽  
◽  
Balram Yadav ◽  
Indrajeet Kumar ◽  
◽  
...  
Keyword(s):  
Power Quality ◽  
Distribution System ◽  
Active Power Filter ◽  
Voltage Regulation ◽  
Active Power ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Unified Power Quality Conditioner ◽  
Three Phase ◽  
Power Quality Conditioner

This thesis addresses the Unified Power Quality Conditioner (UPQC) which is a major custom power solutions capable for load balancing, power factor-correction, voltage regulation, voltage and current harmonics mitigation in a three-phase three-wire distribution system for different combinations of linear, non-linear and dynamic loads. The unit template technique (UTT) is used to get the reference signals for series active power filter and shunt active power filter which utilizes two closed loop PI controllers. The design of three- phase three-wire UPQC includes the design of shunt controller (SHUC) and series controller (SERC).

Development of Real Time Implementation of 5/5 Rule based Fuzzy Logic Controller Shunt Active Power Filter for Power Quality Improvement

2016 ◽  
Vol 17 (6) ◽  
pp. 607-617 ◽  
Author(s):  
Pratap Sekhar Puhan ◽  
Pravat Kumar Ray ◽  
Gayadhar Panda
Keyword(s):  
Fuzzy Logic ◽  
Real Time ◽  
Power Quality ◽  
Fuzzy Logic Controller ◽  
Active Power Filter ◽  
Active Power ◽  
Control Technique ◽  
Shunt Active Power Filter ◽  
Power Filter ◽  
Current Controller

Abstract This paper presents the effectiveness of 5/5 Fuzzy rule implementation in Fuzzy Logic Controller conjunction with indirect control technique to enhance the power quality in single phase system, An indirect current controller in conjunction with Fuzzy Logic Controller is applied to the proposed shunt active power filter to estimate the peak reference current and capacitor voltage. Current Controller based pulse width modulation (CCPWM) is used to generate the switching signals of voltage source inverter. Various simulation results are presented to verify the good behaviour of the Shunt active Power Filter (SAPF) with proposed two levels Hysteresis Current Controller (HCC). For verification of Shunt Active Power Filter in real time, the proposed control algorithm has been implemented in laboratory developed setup in dSPACE platform.

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