Harmonics Elimination in Power Generation Using Active Power Filter (original) (raw)
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Harmonic Compensation in Grid Integrated Distribution System Using Active Power Filter
In this paper, a new control method is presented for active power filter (APF). APF is connected in parallel to the distribution network to reduce harmonics. The total harmonic distortions measured at source to check the harmonic level. Combination of linear and nonlinear loads produces harmonics. Active filter consists of converter and controller. Controller provides reverse harmonics to the converter in terms of a pulse and the converter injects harmonics wit 180 degrees phase shift. To generate current magnitude PI and ANN controllers are used. PI and ANN techniques are compared and simulated using matlab simulink software.
2014
In the effort to reduce the harmonic disturbances generated by the non-linear loads the select of the active power filters comes out to improve efficiency of filter and to solve many problems existing with classical passive filters. One of the main points for a suitable implementation of an active filter is use a good method for current or voltage reference generation. There exist various implementation supported by different theories (either in time or frequency– domain), which incessantly consideration their performances offering ever better solutions. This paper provides a review of common used theories. This paper present, the shunt active power filter the control strategies is based on Unit Vector Template (UVT), while a comparison is made for the three control strategies namely UVT, Instantaneous Real and Reactive Power Theory or “p-q theory” and d-q theory for shunt active power filter. In three of the control strategies the control is made over the fundamental supply current...
Harmonics mitigation using shunt active power filter by sinusoidal current control technique
With the widespread use of power electronics devices such as rectifier, inverter etc. in power system causes serious problem relating to power quality. The main issue consideration in this analysis is harmonic, and this is because nonlinear load. To mitigate the effects from nonlinear loads shunt active power filter is places with the line. The control technique of SAPF is sinusoidal current control technique. Hysteresis current control scheme used for IGBT switching and generation of PWM. The simulation of control technique of SAPF is simulated in MATLAB/SIMULINK software. In this paper compare of balanced and unbalanced voltages. Obtained THD of this control technique by simulation analysis. The results indicates the SAPF can improve the power quality.
Journal of Power Electronics, 2019
The application of shunt active power filters (S-APFs) is considered to be the most popular approach for harmonic compensation due to its high simplicity, ease of installation and efficient control. Its functionality mainly depends upon the rapidness and precision of its internally built control algorithms. A S-APF is generally operated in the current controlled mode (CCM) with the detection of harmonic load current. Its operation may not be appropriate for the distributed power generation system (DPGS) due to the wide dispersion of nonlinear loads. Despite the fact that the voltage detection based resistive-APF (R-APF) appears to be more appropriate for use in the DPGS, the R-APF experiences poor performance in terms of mitigating harmonics and parameter tuning. Therefore, this paper introduces a direct harmonic voltage detection based control approach for the S-APF that does not need a remote harmonic load current since it only requires a local point of common coupling (PCC) voltage for the detection of harmonics. The complete design procedure of the proposed control approach is presented. In addition, experimental results are given in detail to validate the performance and superiority of the proposed method over the conventional R-APF control. Thus, the outcomes of this study approve the predominance of the discussed strategy.
An advanced control approach for current harmonic cancellation using shunt active power filter
International Journal of Industrial Electronics and Drives, 2015
Generally, low harmonic frequencies such as the harmonic of the order 5 and 7 have a great influence to deteriorate the network current and interim the grid power factor. The objective is; to cancel out the selected harmonic order from the network current. The shapes of waves and the values of the THD of the network current before and after applying the proposed technique are introduced. The system is simulated and investigated using MATLAB/Simulink. The results prove the effectiveness of the design and control strategy (α-β). This paper deals with design, analysis and simulation of a three phase three wire shunt selective active power filter. It compensates the harmonic currents selectively under balanced power network. In order to improve, the power factor of the supply network, an advanced control approach based on a multivariable filter is adopted. The novelty of the proposed control approach developed in this paper is to use a multi-variable filter (MVF), which can extract the harmonics content of load current reference, according to the axis of Concordia.
IJERT-Control Active Power Filter for improving Power Quality in the Micro-grid
International Journal of Engineering Research and Technology (IJERT), 2013
https://www.ijert.org/control-active-power-filter-for-improving-power-quality-in-the-micro-grid https://www.ijert.org/research/control-active-power-filter-for-improving-power-quality-in-the-micro-grid-IJERTV2IS80543.pdf This paper aims at improving the power quality with controlling method shunt active power filter in Micro-grid System. A hybrid compensation system consisting of an active filter and passive filters in the Micro-grid is discussed. Passive filter is connected to a distortion source and designed to eliminate main harmonics and supply reactive power for the distortion source, while the active filter is applied to the correction of the unbalance condition a system and cancellation of the remaining harmonics. In order to examine the proposed method, simulations are carried out in the case of the distribution system with dynamic nonlinear loads and Micro turbine. Several dynamic nonlinear loads without any filters using just shunt active filter, passive filter and the proposed hybrid structure. The performance of the proposed system was analyzed and simulated via MATLAB software. The results confirm the validity of the proposed approach to eliminate undesired harmonic and distortion.
HARMONIC CURRENT COMPENSATION BY USING SHUNT ACTIVE POWER FILTER
The current harmonics are the most common problem of power quality, Active filters have become a viable alternative for controlling harmonic levels in industrial and commercial facilities. However, there are many different filter configurations that can be employed, The Active filters are generally used at harmonic producing loads. Among all APF's the Shunt Active Power Filter (SAPF) is more prominent at medium/high voltage applications, and also it provides higher efficiency. This paper describes the three phase shunt active power filter to improve power quality by compensating the source current harmonics.Simulation results, obtaining, using MATLAB-Simulinkshows that the proposed SAPF can effectively compensate the current harmonics with different types of non-linear loads.
International Journal of Power Electronics and Drive Systems, 2022
In this paper, a novel current controller for selective compensation with active power filter (APF) in a microgrid (MG) is proposed. Power generation with sinusoidal voltage and high quality is essential in the microgrid. Hence, a current control-based method for shunt active power filters aiming to compensate the selective harmonic is proposed. Also, voltage source converter is used in the APF to improve MG power quality. Using the suggested control method can reduce total harmonic distortion (THD). The obtained results from the MATLAB simulations proved the superior of our method than other methods to decrease the current harmonic in a microgrid to an admissible area. Additionally, the practical results obtained from the implementation of the proposed control approach on an actual microgrid confirm the efficacy of the proposed method.
Design of Shunt Active Power Filter to eliminate the harmonic
The shunt active power filter has proved to be a useful device to eliminate harmonic currents and to compensate reactive power for linear/nonlinear loads. This paper presents a novel approach to determine reference compensation currents of the three-phase shunt active power filter (APF) under distorted and/or imbalanced source voltages in steady state. The proposed approach is compared with three reviewed shunt APF reference compensation strategies. Results obtained by simulations with Matlab and Simulink show that the proposed approach is more effective than the reviewed approaches on compensating reactive power and harmonic/neutral currents of the load, even if the source voltages are severely distorted and imbalanced. In addition, the proposed approach yields a simpler design of the shunt APF controller.
IRJET- Design and Implementation of Shunt Active Filter for Harmonics Reduction in Distribution Grid
IRJET, 2020
This paper explores the modeling of a Simulation primarily based, shunt active power filter (SAPF) for a distribution network to scale back current harmonics fed to a nonlinear load. Nonlinear load draw non sinusoidal current and voltage from the utility. These non-sinusoidal current and voltages created thanks to nonlinear load are known as harmonics. The harmonic voltage and current have a nasty impact on the system and creates larger power quality downside. Thus, to mitigate harmonic issues totally different techniques are used. During this work as introduction totally different power quality issues, harmonics and their reduction techniques or filters are bestowed. Between the various ways that to eliminate harmonics active power filters are most distinguished one. This paper works represent active shunt filter exploitation MATLAB simulation.