Power quality and nonlinear load voltage stabilization using error-driven switched passive power filter

In this work, a Three phase Transformerless Hybrid Series Active Power Filter (THSeAF) based on Sliding Mode Control (SMC) is proposed to mitigate the voltage and current distortions present in an electrical distribution systems (EDS). A Sliding Mode Controller is designed by controlling the parameters present on the load side as well as source side of the system. Three separate voltage source converters (VSC) are used. The mod1elling of the system is derived by considering a single-phase system by using state space analysis. The frequency response characteristics have been derived for the single-phase system and the stability of the system is studied. It is observed that the system has good stability margins when the SMC is applied at the source side compared to load side. Simulation results obtained in PSCAD/EMTDC v4.6 have been observed for power quality issues like voltage sags, voltage swells, voltage distortions, voltage unbalances and their concurrent occurrence. The approach of stationary reference frame was used for source side control and PQ theory is used for load side control. It is observed that the proposed controller works well in obtaining a stable and constant load voltage during these power quality issues. The difference in settling time observed is around 4 ms for the load side and source side control. The THD present in the load voltage is near about 1%. The SMC is found to be robust in obtaining a constant load voltage with low THD and an improved power factor.

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

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.e2237.039520 ◽

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.

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

10.22541/au.161659439.90762749/v1 ◽

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.

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

International Journal of Electrical and Computer Engineering (IJECE) ◽

10.11591/ijece.v10i4.pp3393-3402 ◽

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.

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Wind Power Conversion Chain Harmonic Compensation using APF Based on FLC

Algerian Journal of Renewable Energy and Sustainable Development ◽

10.46657/ajresd.2020.2.1.11 ◽

2020 ◽

Vol 2 (01) ◽

pp. 75-83 ◽

Cited By ~ 1

Author(s):

Fares Bourourou ◽

Sid Ahmed Tadjer ◽

Idir Habi

Keyword(s):

Wind Power ◽

Power Quality ◽

Fuzzy Logic Controller ◽

Power Conversion ◽

Fuzzy Variable ◽

Nonlinear Load ◽

Harmonic Compensation ◽

Power Filter ◽

Power Quality Improvement ◽

Wind Power System

The work deals study of the active power filter (APF) aplications on harmonic compensation of wind power conversion chain network in case of nonlinear load presence, this, after modeling of each part and well choice of the rules bases and intervals for each selected fuzzy variable of the suitable fuzzy logic controller. To show the effectiveness of this kind of regulation on power quality improvement in wind power system and on APF function reliability on harmonic compensation compered to the use of PI controller, all system is simuled via MATLAB Simulink, Results are discussed and analyzed to represent the effectiveness of the proposed APF on power quality and harmonic reducing on wind conversion chain network.

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Hardware-in-the-Loop Implementation and Performance Evaluation of Three-Phase Hybrid Shunt Active Power Filter for Power Quality Improvement

Mathematical Problems in Engineering ◽

10.1155/2021/8032793 ◽

2021 ◽

Vol 2021 ◽

pp. 1-23

Author(s):

Ayesha Khan ◽

Mujtaba Hussain Jaffery ◽

Yaqoob Javed ◽

Jehangir Arshad ◽

Ateeq Ur Rehman ◽

...

Keyword(s):

Power Quality ◽

Power Factor ◽

Reactive Power ◽

Voltage Source ◽

Control Algorithms ◽

System Response ◽

Nonlinear Load ◽

Power Filter ◽

Three Phase ◽

Internal Networks

The excessive use of nonlinear load causes electric current harmonics that ultimately downgrades the electrical power quality. If a failure exists due to internal integration of a power system in any one of the internal networks, it causes uncomplimentary consequences to the entire power system’s performance. This paper proposed a hybrid shunt active harmonic power filter (HSAHPF) design to reduce harmonic pollution. A digital controller HIL simulator has been modeled using a three-phase voltage source inverter to test the efficiency of HSAHPF and the performance of control algorithms. Moreover, the instantaneous active and reactive current theory (Id − Iq) and instantaneous active and reactive power theory (Pq0) control algorithms are implemented for the reference current generation in HSAHPF, resulting in reduced harmonic distortions, power factor improvement for a balanced nonlinear load. The control algorithms are further employed in Arduino MEGA to keep the factor of cost-effectiveness. The simulation of the proposed design has been developed in Simulink. The validation and testing of HSAHPF using controller HIL simulation prove the control algorithms’ ability to run in a portable embedded device. The statistical analysis of the proposed system response provides a minimum total harmonic distortion (THD) of 2.38 from 31.74 that lies in IEEE 519-1992 harmonic standards with an improved stability time of 0.04 s. The experimental verification and provided results of the HIL approach validate the proposed design. Significant mitigation of harmonics can be observed, consequently enhancing the power quality with power factor near unity.

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