Harmonic compensation for nonlinear loads by active power

1999 ◽  
Author(s):  
A.Y.K. Wong ◽  
D.K.W. Cheng ◽  
Y.S. Lee
Keyword(s):  
Active Power ◽  
Nonlinear Loads ◽  
Harmonic Compensation

scholarly journals An Intelligent PI Controller-Based Hybrid Series Active Power Filter for Power Quality Improvement

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Arjun Baliyan ◽  
Majid Jamil ◽  
M. Rizwan ◽  
Ibrahim Alsaidan ◽  
Muhannad Alaraj
Keyword(s):  
Simulation Analysis ◽  
Harmonic Distortion ◽  
Active Power Filter ◽  
Pi Controller ◽  
Active Power ◽  
Nonlinear Loads ◽  
Harmonic Compensation ◽  
Power Filter ◽  
Synchronous Reference Frame ◽  
Power Quality Improvement

The quality of power that is degrading day by day is an important issue for all the consumers. The important factor for this is harmonics in the voltage and current waveforms which can be resolved by the use of hybrid series active power filter. The combination consists of a series active power filter and a shunt passive filter connected in parallel to the load. The method used in this paper is for the purpose of achieving good harmonic compensation and reduced total harmonic distortion for various types of nonlinear loads as per the standards of IEEE 519. The proposed HSAPF technique uses the synchronous reference frame method for generating the compensating signal with an intelligent PI controller that uses particle swarm optimization (PSO) technique to obtain the required gain values needed to improve the steady state response of the system. The concept of vigorous HSAPF has been authenticated through MATLAB simulation analysis, and the results obtained validate the accuracy of the method for the different load conditions.

scholarly journals Grid-Connected Photovoltaic System with Active Power Filtering Functionality

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Joaquín Vaquero ◽  
Nimrod Vázquez ◽  
Ivan Soriano ◽  
Jeziel Vázquez
Keyword(s):  
Power Factor ◽  
Sliding Mode ◽  
Power Factor Correction ◽  
Power Converter ◽  
Active Power ◽  
Photovoltaic System ◽  
Nonlinear Loads ◽  
Harmonic Compensation ◽  
Current Harmonics ◽  
Single Phase Inverter

Solar panels are an attractive and growing source of renewable energy in commercial and residential applications. Its use connected to the grid by means of a power converter results in a grid-connected photovoltaic system. In order to optimize this system, it is interesting to integrate several functionalities into the power converter, such as active power filtering and power factor correction. Nonlinear loads connected to the grid generate current harmonics, which deteriorates the mains power quality. Active power filters can compensate these current harmonics. A photovoltaic system with added harmonic compensation and power factor correction capabilities is proposed in this paper. A sliding mode controller is employed to control the power converter, implemented on the CompactRIO digital platform from National Instruments Corporation, allowing user friendly operation and easy tuning. The power system consists of two stages, a DC/DC boost converter and a single-phase inverter, and it is able to inject active power into the grid while compensating the current harmonics generated by nonlinear loads at the point of common coupling. The operation, design, simulation, and experimental results for the proposed system are discussed.

scholarly journals The Power Losses in Cable Lines Supplying Nonlinear Loads

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1374
Author(s):  
Bartosz Rozegnał ◽  
Paweł Albrechtowicz ◽  
Dominik Mamcarz ◽  
Monika Rerak ◽  
Maciej Skaza
Keyword(s):  
Bessel Function ◽  
Cross Section ◽  
Power Loss ◽  
Sine Wave ◽  
Active Power ◽  
New Method ◽  
Power Losses ◽  
Nonlinear Loads ◽  
Current Harmonics ◽  
Cable Lines

This paper presents the skin effect impact on the active power losses in the sheathless single-core cables/wires supplying nonlinear loads. There are significant conductor losses when the current has a distorted waveform (e.g., the current supplying diode rectifiers). The authors present a new method for active power loss calculation. The obtained results have been compared to the IEC-60287-1-1:2006 + A1:2014 standard method and the method based on the Bessel function. For all methods, the active power loss results were convergent for small-cable cross-section areas. The proposed method gives smaller power loss values for these cable sizes than the IEC and Bessel function methods. For cable cross-section areas greater than 185 mm2, the obtained results were better than those for the other methods. There were also analyses of extra power losses for distorted currents compared to an ideal 50 Hz sine wave for all methods. The new method is based on the current penetration depth factor calculated for every considered current harmonics, which allows us to calculate the precise equivalent resistance for any cable size. This research is part of our work on a cable thermal analysis method that has been developed.

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