Power quality enhancement using shunt active power filter based on particle swarm optimization brahim berbaoui, chellali benachaiba and mouloudi youcef abstract this work deals with. This paper deals with design, simulation and experimentation of a shunt active power filter sapf to improve power quality. Design of shunt active power filter to eliminate the harmonic. Design and simulation of three phase shunt active power. Cerning power systems has created conditions for a more extended use of active. Shunt active power filter sapf behaves as a three phase controlled current source and it generates compensation current in phase opposition to the harmonics current that depends. Another example shows the high dynamics of the shunt active filter when compensating fast changing harmonic producing loads. Operation of shunt active power filter under unbalanced and. A matrix converter produces significant harmonics and nonstandard frequency components into load. Matlabsimulink model based shunt active power filter. This paper describes the development of a low cost shunt active power filter with digital. Neural network is used for estimation of distorted waves, delay less harmonic filtering. The principal function of the shunt active power filter sapf is to generate just enough reactive and harmonic current to compensate the nonlinear loads in the line. Threephase threelevel npc shunt active power filter performances based on pwm and anns controllers for harmonic current compensation chennai salim1 and benchouia mohamed.
Shows a system configuration of a singlephase or threephase shunt active filter is mainly used for compensate various types of current related problems. Design and implementation of a shunt active power filter with. Shunt active power filter based on srf theory and hysteresis. Three phase shunt active power filter using pq theory file. Combination of passive, series and shunt active filters 4. Pdf design methodology for shunt active filters researchgate. Reference current signal generation for shunt active power filter the shunt active power filter. This is to certify that the thesis entitled study of single phase shunt active power filter submitted by swayam saswat to the national institute of technology, rourkela for the award of degree of bachelor of technology in electrical engineering is a bona fide record of research carried out by his under my supervision.
Aalborg universitet control of a threephase fourwire shuntactive. Power quality enhancement using shunt active power filter. Experiences with shunt active filter to demonstrate the operation of shunt active filter measurement was made at a dcdrive without and with shunt active filter figure 9. A shunt apf comprises of a controllable voltage or current. Threephase threelevel npc shunt active power filter performances based on pwm and anns controllers for harmonic current compensation chennai salim1 and benchouia mohamed toufik2 1electrical engineering department, birine nuclear research center, algeria, 2laboratory l. As a result, components of harmonic currents contained in the load current are cancelled by the effect of the active filter, and the source current remains sinusoidal. Pdf this article deals with the design of a threewire shunt active filter based on a acdc converter. Design of shunt active power filter to eliminate the. Phase shift of the harmonic current is 180 degrees.
Simulation results a number of simulations have been performed to check the working of the shunt active power filter under various nonlinear loadings w. It is possible to find active filters combined with passive filters as well as active filters of both types acting together. Active power filter figure 1 shunt active power filters basic compensation principle. Basic principle of shunt active filter basic principle of shunt active filter is it compensates current harmonics by injecting equal but opposite harmonic compensating current. Hysteresis control for shunt active power filter under. Shunt active filter for power quality improvement, mauricio. Analysis of power quality improvement using active shunt. In this paper design of shunt active filter its control technique and performance for rl load is presented. Shunt active power filter the principle of the shunt filter is to produce harmonic currents equal in magnitude but opposite inphase to those harmonics that are present in the grid.
May 08, 2018 this is a video demonstration of the simulink model of shunt apf. In figure 10 there is the current of a lift drive while accelerating without shunt active filter with the typical 6pulse rectifier current curve form. Shunt active power filter the principle of the shunt filter is to produce harmonic currents equal. In this manner a shunt active power filter can be used to eliminate current harmonics and reactive power compensation11. Also, compensating p0 means balancing load on three phase. Figure 1 illustrates the concept of the harmonic current cancellation so that the current being supplied from the source is sinusoidal.
With this approach the inverter controls the active power flow from the renewable energy source to the grid and also performs the nonlinear load current harmonic compensation. As a result, rating of the active filter is greatly. Figure 1 illustrates a typical structure of the shunt apf connected to a main source. Reference current estimation for shunt active filter control.
A voltage source inverter vsi is used as the shunt active power filter 10. Connection of the active filter to 3phase 4wire supply system. Chang, senior member, ieee abstract this paper presents the application. Many of the available harmonic analyzer equipment produce harmonic current reading in the per unit format, making insertion of any collected current data into the. Power quality improvement using passive shunt filter, tcr and tsc combination a thesis submitted in partial fulfillment of the requirements for the award of the degree of master. The shunt active filter is also consists of shunt converter with dc capacitor and shunt inductor. The active shunt filter monitors all 3phase line currents and processes the measured current signal via a digital signal processor system. Simulation results of a shunt active power filter using pq. The voltage source inverter vsi founded shunt apf is by far the most widespread kind utilized today, due to its well. The voltage source inverter used in the active filter. The shunt active power filter operating principle is to inject into the power supply network the same harmonics current as that generated by the nonlinear load but in. Pdf this paper proposes a series active filter and shunt active filter to minimize the power quality impact present in matrix converters instead. The filter then compensates by actively imposing signals in counter phase to the unwanted elements of the current harmonic distortion.
Aug 19, 2017 in this way, harmonic and reactive compnent of load is supplied by this shunt active power filter. If the harmonics of the load indicated in tableii is to be filtered by a conventional voltage source type active. In this case, the shunt active power filter operates as a current source injecting the harmonic components generated by the load but phase shifted by 180 0. Experiences with shunt active filter to demonstrate the operation of shunt active filter measurement was made at a dcdrive. A study of a threephase fourwire shunt active power filter for.
As can be seen the curve form of the supply current is almost fundamental current only when. Shunt active filters provide a low impedance path for harmonic currents. Shunt active power filter file exchange matlab central. Therefore, only the analysis of adaptive notch filter is presented in the this paper. However, they allow the fundamental frequency of the current to reach the supply voltage. Design and simulation of three phase shunt active power filter using srf theory rejil c1, anzarim2 and arun kumar r3 1. Shunt active filter algorithms for a three phase system fed. Operation principle of system based on shunt active filter. A multiplicity of methods is used for instantaneous current harmonics detection in active power filter such as fft fast fourier technique. Shunt active power filter shunt active power topology is most popular topology for current harmonics elimination due to easy implementation and good performance. Based on your location, we recommend that you select. Keywords power quality, shunt active filter, indirect cu rrent control, synchronous detection technique using ann. The block diagram of shunt active power filter shown in fig 2.
Jul 15, 20 shunt active power filter model based on 400volts 3 phase 3 wire system. The simple shunt active filter arrangement with nonlinear load is considered. A shunt apf comprises of a controllable voltage or current source. Shunt active filter nonlinear load sinusoidal source source current load current filter current fig 2. However, kalman filter can be used to replace it, and the performance of the system can be further investigated. Therefore, the configuration is often referred to as an active parallel or shunt filter.
Analysis of power quality improvement using active shunt filters soniya arora1, neelam rawat2, vrij mohan vidyarthi3 1,2,3 assistant professor, jbit, dehradun, uttarakhand, abstract. International journal of engineering research and general. Mitigation of harmonics by shunt active power filter. Hybrid active power filters the shunt connected active power filter with a selfcontrolled dc bus used for reactive power compensation. In this case, the shunt active filter serves as a current source 6. Moreover, comparison of effective elimination of low order harmonics is shown in fig. An important notice at the end of this ti reference design addresses authorized use, intellectual property matters and other important disclaimers and information. The objective of the paper is to study, simulate and design a shunt active power filter capable of compensating current harmonics generated at the supply side due to presence of such nonlinear loads. It is possible to find active filters combined with passive filters as well as active filters of both types. Design and simulation of a shunt active filter in application. Choose a web site to get translated content where available and see local events and offers.
Shunt active filter an overview sciencedirect topics. However, the required dc link voltage is much less when compared with a standard voltage source type active power filter. Pdf shunt active and series active filtersbased power quality. In figure 11 there is the same current when active filter is on. It is controlled to draw or supply a compensating current i c from or to the utility, so that it cancels current harmonics on the ac side. Jul 22, 20 shunt active power filter based on pq theory. Shunt and series conditioning schemes for hybrid matrix. Application of backstepping to the virtual flux direct power. Design of shunt active power filter by using an advanced. The shunt active power filter operating principle is to inject into the power supply network the same harmonics current as that generated by the nonlinear load but in the opposite direction. Kalman filters for reference current generation in shunt active. With this approach the inverter controls the active power flow from. Harmonic reduction by using shunt hybrid power filter.
On the basis of the threephase fourwire shunt active power filter apf, this paper discusses the control. The basic topology of the shunt active filter is a pwm controlled threephase voltage source inverter bridge. Active power filter for compensation of reactive power and harmonics in 3phase 4wire. Figure 2 shunt active power filtershapes of load, source and desired filter current wave forms figure 1 shows the. Shunt active power filter for power quality improvement in.
The objective of the paper is to study, simulate and design a shunt active power filter capable of compensating current harmonics generated at the supply side due to presence of such nonlinear. A harmonic compensation circuit with currentfed active power filter without feedback with unity gain is depicted in fig. Output result of source current for this case is shown in fig. Threephase threelevel npc shunt active power filter. The configuration of a system with shunt active filter. The work presented in this thesis was carried out during my ph. There are two types of power circuits used to implement an active filter, namely voltage source. Hybrid active power filters the shunt connected active power filter with a selfcontrolled dc bus used for reactive power compensation in power system. Shunt active filter for multilevel inverters using ddsrf with state. Active filter cancels the harmonics present in load current, and source current will remain sinusoidal and in phase with neutral voltage.
Realtime shunt active power filter compensation hugo a. In this case the shunt active power filter operates as a current source injecting the harmonic. Electricity consumption has been increasing so rapidly once in line with the development of the country to achieve its status as the industrial. Shunt active and series active filtersbased power quality. Power quality improvement using active shunt power filter. Control strategy to get the accuracy of the apf and to simplify the control scheme, an advanced control strategy is designed as shown in. On the design of shunt active filter for improving power quality ieee.
Lcl interface filter design for shunt active power filters article pdf available in advances in electrical and computer engineering 103 august 2010 with 307 reads how we measure reads. Threephase shunt active filter for power electronic. Pdf lcl interface filter design for shunt active power filters. Active filters there are basically two types of active filters.
As a result, rating of the active filter is greatly reduced with the proposed system. The idea is to integrate the dg unit functions with shunt active power filter capabilities. Matlabsimulink model based shunt active power filter using. Ramoscarranza, aurelio medina, senior member, ieee, gary w. Simulation results a number of simulations have been performed to check the working of the shunt active power filter under various nonlinear loadings. Design of shunt active filter to improve power quality using. For calculating sequence currents neural network is used.
Design of shunt active filter to improve power quality using pq theory written by miss. This paper proposes a series active filter and shunt active filter to minimize the power quality impact present in matrix converters instead of passive filter. The proposed system compensates the sag and swell problems efficiently in matrix converter. International journal of engineering research and general science volume 2, issue 3, aprilmay 2014 issn 20912730 285. Improvement of the shunt active power filter dynamic. An efficient control system of shunt active power filter in three.
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