Automatic Optimization and Control of Power Factor, Reactive Power and Reduction of THD for Linear and Nonlinear Load by Using Arduino UNO

2018 ◽  
Author(s):  
Saurabh B. Jarad ◽  
Vishal D. Lohar ◽  
Shubham P. Choukate ◽  
Shrikant D. Mangate
Keyword(s):  
Power Factor ◽  
Reactive Power ◽  
Nonlinear Load ◽  
Automatic Optimization ◽  
Optimization And Control ◽  
Linear And Nonlinear ◽  
Arduino Uno ◽  
And Control

A New Improved Walsh Function Algorithm for Active and Reactive Power Measurement

2014 ◽  
Vol 67 (3) ◽  
Author(s):  
Garba Aliyu ◽  
Saifulnizam Abd. Khalid ◽  
Jafaru Usman ◽  
Ahmad Fuad A. Aziz ◽  
Hussein Shareef
Keyword(s):  
Reactive Power ◽  
Walsh Function ◽  
Power Measurement ◽  
Nonlinear Load ◽  
Active And Reactive Power ◽  
Linear Load ◽  
Alternative Approach ◽  
Three Phase ◽  
Linear And Nonlinear ◽  
High Level

This paper present improved Walsh function (IWF) algorithm as an alternative approach for active and reactive power measurement in linear and nonlinear, balanced and unbalanced sinusoidal three phase load system. It takes advantage of Walsh function unified approach and its intrinsic high level accuracy as a result of coefficient characteristics and energy behaviour representation. The developed algorithm was modeled on the Matlab Simulink software; different types of load, linear and nonlinear were also modeled based on practical voltage and current waveforms and tested with the proposed improved Walsh algorithm. The IEEE standard 1459-2000 which is based on fast Fourier transform FFT approach was used as benchmark for the linear load system while a laboratory experiment using Fluke 435 power quality analyzer PQA which complies with IEC/EN61010-1-2001standards was used to validate the improved algorithm for nonlinear load measurement. The results showed that the algorithm has the potential to effectively measure three phase power components under different load conditions.

scholarly journals Performance of Three Level H-Bridge Inverter in Grid Connected Solar PV for Multifunctional Operations using Different Control Techniques

2020 ◽  
Vol 9 (4) ◽  
pp. 1942-1950
Keyword(s):  
Power System ◽  
Power Factor ◽  
Reactive Power ◽  
Power Factor Correction ◽  
Solar Pv ◽  
Distribution Grid ◽  
Nonlinear Loads ◽  
Nonlinear Load ◽  
Control Techniques ◽  
Active And Reactive Power

This paper presents multifunctional operation capability of three level cascade H bridge inverter for grid connected solar pv application. The solar panel and inverter are modelled for unbalance and nonlinear loads with three control techniques (pq,dq,cpt) and its performance is simulated in the MATLAB environment using SIMULINK and Sim Power System (SPS) toolboxes. The performance of inverter is evaluated for harmonics elimination, power factor correction apart from active and reactive power support to grid and nonlinear load .Performance of three level H bridge inverter is evaluated for both PV mode and STATCOM mode using three control techniques for distribution grid.

scholarly journals EVALUATION OF POWER FACTOR UNDER LINEAR AND NONLINEAR LOAD CONDITIONS

2009 ◽  
Vol 32 (3) ◽  
pp. 255-260
Author(s):  
Mohammed A. Abdulsada ◽  
Furat A. Abbas ◽  
Fathi R. Abusief
Keyword(s):  
Power Factor ◽  
Nonlinear Load ◽  
Linear And Nonlinear ◽  
Load Conditions

A Reactive Power Generator Based on Voltage Source Inverter

2012 ◽  
Vol 260-261 ◽  
pp. 432-437
Author(s):  
Tao Song
Keyword(s):  
Power Systems ◽  
Power Factor ◽  
Reactive Power ◽  
Voltage Source ◽  
Total Power ◽  
Good Effect ◽  
Voltage Source Inverter ◽  
Nonlinear Load ◽  
Power Generator ◽  
Reactive Compensation

With the application of large scale nonlinear load in power systems, lots of harmonic are produced, causing the total power factor to decrease. Therefore, it needs to compensate the reactive power of power systems. The disadvantages of the widely applied static var compensator are that the size of the compensator is too large, and the control ability is poor when the capacity of power systems is small. So a reactive power generator based on voltage source inverter is proposed in this paper. The reactive power generator takes series connection of IGBTs as the main circuit structure, the inverter as core and DSP as controller. The close loop framework consists of human-computer interaction, measurements and feedback control. The inverter is controlled by a digital PI close loop controller to feed a phase adjustable current to power systems to compensate reactive power. The system’s structure is simple, the control is flexible, and the size is small. The test results show that the response of this reactive power generator is quick, and it can compensate the power factor to be 1 which means that it has good effect of static reactive compensation.

Coordinated Optimization and Control Technology between Active and Reactive Power

2012 ◽  
Vol 614-615 ◽  
pp. 944-948
Author(s):  
Ya Ping Li ◽  
Ke Wang ◽  
Dan Zeng
Keyword(s):  
Voltage Stability ◽  
Reactive Power ◽  
Active Power ◽  
Control Technology ◽  
Active And Reactive Power ◽  
Coordinated Optimization ◽  
Operating Limits ◽  
Optimization And Control ◽  
Mechanism Of Interaction ◽  
And Control

As the coupling between active and reactive power is enhanced along with the expansion of the grid scale and the AC-DC hybrid operation, voltage stability is not only closely related to reactive power, but also related to active power. By the constraints of generator power circle and its operating limits, the mechanism of interaction between the active and reactive power is clarified. Also, the hierarchy structure of coordinated optimization and control technology between them is established, and an improved AGC control strategy consideration to static voltage stability is proposed. By optimizing the active power output of the AGC unit, the dynamic reactive power reserve capacity of each unit is improved and the system voltage is supported. The strategy is verified through a variety of experiments on the IEEE-39 bus system.

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

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.

scholarly journals Dynamic Modeling and Control of a Single-Phase Grid-Connected photovoltaic System

2020 ◽  
Vol 4 (6) ◽  
Author(s):  
A. Zare ◽  
S. B M.T. Iqbal
Keyword(s):  
Power Factor ◽  
Single Phase ◽  
Reactive Power ◽  
Control Strategies ◽  
Maximum Power ◽  
Photovoltaic System ◽  
Pv System ◽  
Maximum Power Point ◽  
Power Point ◽  
And Control

Designing control strategies to connect a photovoltaic (PV) system to the grid has been significantly challenging. This paper focuses on developing a controller for a single-phase PV system connected to the grid and its implementation to modify the power factor in the distribution power system. To design a grid-connected PV system, its components are modeled, such as PV panels, Maximum Power Point tracking (MPPT) algorithm, the grid interface inverter with the appropriate filter, and the DC link capacitor. SIMULINK / MATLAB is used for simulation in this study. The proposed control strategy is designed to track the maximum power point of The PV panels and control the PV active and reactive output power. In this paper, the presented reactive power control provides the PV system with power factor correction (PFC) capability. The proposed technique for checking controller validity is tested, and the results prove that the proposed controller is good and provides the required performance.

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