However, kalman filter can be used to replace it, and the performance of the system can be further investigated. 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. Design and simulation of three phase shunt active power filter using srf theory rejil c1, anzarim2 and arun kumar r3 1. Shunt and series conditioning schemes for hybrid matrix.
However, they allow the fundamental frequency of the current to reach the supply voltage. On the basis of the threephase fourwire shunt active power filter apf, this paper discusses the control. Simulation results of a shunt active power filter using pq. This paper deals with design, simulation and experimentation of a shunt active power filter sapf to improve power quality. Combination of passive, series and shunt active filters 4. Aalborg universitet control of a threephase fourwire shuntactive. An efficient control system of shunt active power filter in three. A voltage source inverter vsi is used as the shunt active power filter 10. Pdf this article deals with the design of a threewire shunt active filter based on a acdc converter. The idea is to integrate the dg unit functions with shunt active power filter capabilities. Aug 19, 2017 in this way, harmonic and reactive compnent of load is supplied by this shunt active power filter. Design of shunt active filter to improve power quality using pq theory written by miss.
Also, compensating p0 means balancing load on three phase. Reference current signal generation for shunt active power filter the shunt active power filter. Therefore, the configuration is often referred to as an active parallel or shunt filter. Power quality enhancement using shunt active power filter.
Hysteresis control for shunt active power filter under. Figure 2 shunt active power filtershapes of load, source and desired filter current wave forms figure 1 shows the. In this paper design of shunt active filter its control technique and performance for rl load is presented. On the design of shunt active filter for improving power quality ieee. Three phase shunt active power filter using pq theory file. 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. Design of shunt active filter to improve power quality using. The filter then compensates by actively imposing signals in counter phase to the unwanted elements of the current harmonic distortion. Shunt active filter algorithms for a three phase system fed. Threephase shunt active filter for power electronic. A harmonic compensation circuit with currentfed active power filter without feedback with unity gain is depicted in fig. 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. Another example shows the high dynamics of the shunt active filter when compensating fast changing harmonic producing loads.
Pdf shunt active and series active filtersbased power quality. The active shunt filter monitors all 3phase line currents and processes the measured current signal via a digital signal processor system. Design of shunt active power filter to eliminate the. 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. In this manner a shunt active power filter can be used to eliminate current harmonics and reactive power compensation11. Simulation results a number of simulations have been performed to check the working of the shunt active power filter under various nonlinear loadings w. The filter then compensates by actively imposing signals 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.
Design and simulation of three phase shunt active power. Threephase threelevel npc shunt active power filter. Shunt active filter for power quality improvement, mauricio. As a result, rating of the active filter is greatly.
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. Design and simulation of a shunt active filter in application. 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. Connection of the active filter to 3phase 4wire supply system. Experiences with shunt active filter to demonstrate the operation of shunt active filter measurement was made at a dcdrive. Jul 15, 20 shunt active power filter model based on 400volts 3 phase 3 wire system. Control strategy to get the accuracy of the apf and to simplify the control scheme, an advanced control strategy is designed as shown in. The basic topology of the shunt active filter is a pwm controlled threephase voltage source inverter bridge. As a result, rating of the active filter is greatly reduced with the proposed system. In this case the shunt active power filter operates as a current source injecting the harmonic. Active filters there are basically two types of active filters. Operation principle of system based on shunt active 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.
Reference current estimation for shunt active filter control. Shunt active and series active filtersbased power quality. Operation of shunt active power filter under unbalanced and. Shunt active filters provide a low impedance path for harmonic currents. Shunt active filter nonlinear load sinusoidal source source current load current filter current fig 2. 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. 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. However, the required dc link voltage is much less when compared with a standard voltage source type active power filter. Pdf this paper proposes a series active filter and shunt active filter to minimize the power quality impact present in matrix converters instead. Shows a system configuration of a singlephase or threephase shunt active filter is mainly used for compensate various types of current related problems. Analysis of power quality improvement using active shunt.
A matrix converter produces significant harmonics and nonstandard frequency components into load. Keywords power quality, shunt active filter, indirect cu rrent control, synchronous detection technique using ann. 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. For calculating sequence currents neural network is used. 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. As can be seen the curve form of the supply current is almost fundamental current only when. Jul 22, 20 shunt active power filter based on pq theory. International journal of engineering research and general. Output result of source current for this case is shown in fig. The shunt active filter is also consists of shunt converter with dc capacitor and shunt inductor. In figure 11 there is the same current when active filter is on. 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.
Phase shift of the harmonic current is 180 degrees. Hybrid active power filters the shunt connected active power filter with a selfcontrolled dc bus used for reactive power compensation in power system. Pdf design methodology for shunt active filters researchgate. Shunt active filter for multilevel inverters using ddsrf with state. The voltage source inverter vsi founded shunt apf is by far the most widespread kind utilized today, due to its well. The block diagram of shunt active power filter shown in fig 2. A shunt apf comprises of a controllable voltage or current source. Neural network is used for estimation of distorted waves, delay less harmonic filtering. 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. Realtime shunt active power filter compensation hugo a. Ramoscarranza, aurelio medina, senior member, ieee, gary w. 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.
Based on your location, we recommend that you select. A study of a threephase fourwire shunt active power filter for. Figure 1 illustrates the concept of the harmonic current cancellation so that the current being supplied from the source is sinusoidal. In this case, the shunt active filter serves as a current source 6. Design and implementation of a shunt active power filter with. Shunt active filter an overview sciencedirect topics. 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. This shunt connected active power filter, with a selfcontrolleddc bus, has a topology similar to that of. 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.
An important notice at the end of this ti reference design addresses authorized use, intellectual property matters and other important disclaimers and information. 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. Design of shunt active power filter to eliminate the harmonic. 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. It is possible to find active filters combined with passive filters as well as active filters of both types acting together. Threephase threelevel npc shunt active power filter performances based on pwm and anns controllers for harmonic current compensation chennai salim1 and benchouia mohamed. Moreover, comparison of effective elimination of low order harmonics is shown in fig.
There are two types of power circuits used to implement an active filter, namely voltage source. A shunt apf comprises of a controllable voltage or current. Chang, senior member, ieee abstract this paper presents the application. The configuration of a system with shunt active filter. Matlabsimulink model based shunt active power filter using.
A multiplicity of methods is used for instantaneous current harmonics detection in active power filter such as fft fast fourier technique. Cerning power systems has created conditions for a more extended use of active. Shunt active power filter based on srf theory and hysteresis. Power quality improvement using active shunt power filter. If the harmonics of the load indicated in tableii is to be filtered by a conventional voltage source type active. 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 power filter operates as a current source injecting the harmonic components generated by the load but phase shifted by 180 0. Application of backstepping to the virtual flux direct power. This paper describes the development of a low cost shunt active power filter with digital. Active filter cancels the harmonics present in load current, and source current will remain sinusoidal and in phase with neutral voltage. Electricity consumption has been increasing so rapidly once in line with the development of the country to achieve its status as the industrial. May 08, 2018 this is a video demonstration of the simulink model of shunt apf. Therefore, only the analysis of adaptive notch filter is presented in the this paper.
With this approach the inverter controls the active power flow from. Choose a web site to get translated content where available and see local events and offers. 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. Design of shunt active filter to improve power quality. It is possible to find active filters combined with passive filters as well as active filters of both types.
The simple shunt active filter arrangement with nonlinear load is considered. Mitigation of harmonics by shunt active power filter. Active power filter figure 1 shunt active power filters basic compensation principle. The voltage source inverter used in the active filter. Design of shunt active power filter by using an advanced. International journal of engineering research and general science volume 2, issue 3, aprilmay 2014 issn 20912730 285. The work presented in this thesis was carried out during my ph. 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. 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. Shunt active power filter the principle of the shunt filter is to produce harmonic currents equal. Kalman filters for reference current generation in shunt active. Active power filter for compensation of reactive power and harmonics in 3phase 4wire. The proposed system compensates the sag and swell problems efficiently in matrix converter. Improvement of the shunt active power filter dynamic.
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