The performance of the shunt active power filter is investigated under different scenarios. It can be shown from figure 1 that, in the source side, there will be only constant active power thus the phase currents in the will be sinusoid, balanced, and inphase with their corresponding voltages. This paper presents a direct currentspacevector control of an active power filter apf based on a threelevel neutralpointclamped npc voltagesource inverter. 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. Again, the power topology of the active filter is basically the same as that of the active rectifier i. Basically shunt active power filter operates as a current source injecting the harmonic components generated by the load but phase shifted by 180. The active power filter is expected to generate the appropriate compensating. Shunt active power filter based on srf theory and hysteresis. In this case the shunt active power filter operates as a current source injecting the harmonic. The work presented in this thesis was carried out during.
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. The most widespread topology is the shunt active filter consisting of six active switches, e. Ssitan analysis of shunt active power filter based on instantaneous reactive power theory project guide batch members a. Shunt active filter the concept of active filter uses power electronic equipment to produce harmonic. Buy shunt active filter control strategies for power quality improvement. A shunt active power filter for 12 pulse converter using source current detection approach article pdf available in international journal of power electronics and drive systems 71. Pdf simulation a shunt active power filter using matlab. Phase shift of the harmonic current is 180 degrees. Hybrid filters combine an active filter and a passive filter. Shunt active and series active filtersbased power quality. Shunt active power filters shunt active power filter compensate current harmonics by injecting equalbutopposite harmonic compensating current. Shunt active power filter model based on 400volts 3 phase 3 wire system. Power system using shunt active filter with synchronous detection method a thesis that has been submitted in partial fulfillment of the.
Modelling and simulation of three phase shunt active power. Shunt active power filter for three phase four wire system. Shunt active power filter sapf is a power electronics converter that can inject current having same. Amongst them shunt active power filter is used to eliminate voltage and load current harmonics and for reactive power compensation. Control strategy to get the accuracy of the apf and to simplify the control scheme, an advanced control strategy is designed as shown in. Hysteresis control for shunt active power filter under. Shunt active power filtershapes of load, source and desired. One such equipment installed is the shunt active power filter which operates to lower the harmonic current flowing in the ac system. A shunt active power filter with instantaneous active and reactive power theory pq theory has been proposed for its performance and ability to compensate the harmonics and reactive power. To obtain these performances some contributions were brought, both in the power part and in the control part, those are highlighted. Block diagram of photovoltaic shunt active power filter pv sapf. The hybrid filters combine passive and reactive filters reducing the effective cost. Shunt active power filter thesis proposal i help to study.
A hysteresis current comparator is used to track the. Active power filter, hybrid filter, passive filter, current harmonic. Citeseerx application of a shunt active power filter. Shunt active power filter thesis pdf to the best of my knowledge, the matter embodied in the thesis has not been submitted to any. Shunt active filter series active filter and hybrid active filter. Nonlinear loads like variable speed drives, uninterrupted power supplies and all kind of rectifiers draw a nonsinusoidal current from the network. Design and simulation of three phase shunt active power filter using srf 653 figure 2. Due to nonlinear loads harmonics mainly occurs in current signal, so in this paper a shunt active power filter is used. Shunt active filter works as a current source which, when properly designed and. Dynamic modeling and control of shunt active power filter. Simulation results of a shunt active power filter using pq. The operation principle of the shunt active filter figure 1.
Department of electrical and electronics engineering, k. The active power filter apf gives the most promising solution to compensate for the adverse effects of harmonics and reactive power simultaneously by using suitable control algorithms. A simplified minimum dclink voltage control strategy for shunt. To obtain these performances some contributions were brought, both in the. Therefore they can be considered to be harmonic current sources. In order to compensate harmonic pollution caused by a nonlinear receiver, the parallel active filter consists of a dclink static power converter and an energy. Shunt active power filter for power quality improvement in distribution systems issn. Active power filters are increasingly used to compensate for harmonics and reactive power generated by nonlinear loads which are installed by various utility.
Threephase fourwire shunt active power filter for unbalanced nonlinear loads presented by eng. Photovoltaic integrated shunt active power filter with. Optimized combined system of shunt active power filters. Pdf the present paper describes a shunt active power filter with a control system based on the pq theory, and studies its performance through.
Design of shunt active power filter to eliminate the harmonic. The instantaneous pq theory could not be used for a series active filter and the constant power. Shunt active power filter for power quality improvement in. Design and implementation of a shunt active power filter with reduced dc link voltage o.
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. Optimized combined system of shunt active power filters and capacitor banks 328. Analysis of reference current generation for shunt active. In this paper, the implementation of a shunt active power filter with a small series reactor for a threephase system is presented. Pdf simulation results of a shunt active power filter with control. Threephase threelevel npc shunt active power filter. A matrix converter produces significant harmonics and nonstandard frequency components into load. This paper will discuss and analyze the simulation result for a threephase shunt active power filter using matlabsimulink program. As a result, various hybrid filter topologies have been developed which combine the advantages of both the passive and the active filters 3.
Harmonic mitigation using sevenlevel shunt active power. Design of shunt active power filter by using an advanced. Performance analysis of shunt active power filter with. The simple shunt active filter arrangement with nonlinear load is considered.
Control method of the threephase fourleg shunt active power. Shunt active power filter shapes of load, source and desired. The fivelevel inverter is used as a shunt active power filter, taking advantages of the multilevel inverter such as low harmonic distortion and. Citeseerx application of a shunt active power filter to. A shunt active power filter with enhanced performance using annbased predictive and adaptive controllers, ieee transactions on industrial. Moreover, the active power filter can also compensate the load power factor. The purpose of this paper is to present a harmonic mitigation using a shunt active filter with accurate harmonic current identification and compensation based on instantaneous active and reactive power theory and a selftuning filter for the harmonic isolation and a fuzzy hysteresis band technique for the current control. Matlabsimulink model based shunt active power filter using fuzzy logic controller to minimize the harmonics swati pal, pallavi singh bondriya, yogesh pahariya. Shunt active power filter file exchange matlab central. Design and simulation of a shunt active filter in application. Dynamic modeling and control of shunt active power filter utkal ranjan muduli electrical engineering indian institute of technology gandhinagar gujarat, india382424 email. A multimodular shunt active power filter system and. Jul 15, 20 shunt active power filter model based on 400volts 3 phase 3 wire system.
Power system harmonic compensation using shunt active power. Shunt active power filter sapf is used to eliminate loadterminal current harmonics and leads to purely sinusoidal sourceend currents. Keywordspower system harmonics, shunt active filters, power quality, non linear loads. The system consists of multiple nonlinear loads, which are a combination of harmonic current sources and harmonic voltage sources, with significant unbalanced components. The performance of a conventional threephase shunt active power filter apf using synchronous detection method sdm has been. Design and implementation of a threelevel active power. 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. Style of shunt active power filter to get rid of the harmonic currents and also to compensate the reactive power under distorted as well as imbalanced source voltages in steady condition. The control block diagram of general shunt active power filters is shown in fig. 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 o. Developing a voltagesource shunt active power filter for improving power quality. Student of power electronics, tit bhopal electrical engineering, tit bhopal electrical engineering, lnct bhopal abstract the problem of quality electrical energy provided to. It is investigated that the pq theory based active filter manages to compensate the harmonics and reactive power of the power distribution network even under unbalanced and distorted supply voltages.
Apr 11, 20 analysis of shunt apf active powerfilter 1. Since there is no feeder joining the source and the load, we. Pdf control algorithms of shunt active power filter for. Using shunt active power filters in place of the switched capacitors and lc filters.
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. Active filter cancels the harmonics present in load current, and source current will remain sinusoidal and in phase with neutral voltage. Comparison of two compensation control strategies for shunt. This is the basic principle of shunt active power filter to eliminate the current harmonics and to compensate the reactive power. Shunt active filter control strategies for power quality. Figure 1 illustrates a typical structure of the shunt apf connected to a main source. Combination of passive, series and shunt active filters 4. In general, the ratings of shunt active filters are based on the rms compensating current and the rms filter terminal voltage. Active shunt filter for harmonic mitigation in wind turbines. Pdf a shunt active power filter for 12 pulse converter. An investigation on combined operation of fivelevel shunt. Pv based threelevel npc shunt active power filter with. Pdf a grid currentcon trolling shunt active power filter.
Design and simulation of three phase shunt active power. Pv based threelevel npc shunt active power filter with extended reference current generation method. The active power filter apf is a popular electrical device to. Shunt active power filter thesis proposal sangu ravindra, dr.
A few aspects of power quality improvement using shunt active. Design consideration and experimental evaluation the paper presents an active power filter with high performance, achieved by the authors. Power system using shunt active filter with synchronous detection method a thesis that has been submitted in partial fulfillment of the necessities for the degree of. Nonlinear current control scheme of shunt active power filter. In this way, the power distribution system sees the nonlinear load and the active power filter as an ideal resistor. In this method, the source currents ia,ib, ic are first detected and transformed into. Analysis of power quality improvement using active shunt. Different configurations of apf are available on the market for commercial use, and among them a shunt apf is widely used. This example shows the use of a shunt active harmonic filter ahf to minimize the harmonic content propagated to the source from a nonlinear load. The performance of three phase shunt active power filter using instantaneous power theory with. The configuration of a system with shunt active filter. The active power filters have gained much more attention because of its excellent performance to mitigate the harmonic and reactive power issues. In next step the simulation model is connected with shunt active power filter as shown in fig. Design of shunt active power filter to eliminate harmonics.
Lately also active series filters and hybrid systems combining active and passive filters have been considered. Shunt active filter an overview sciencedirect topics. Paper 7 include multilevel inverter based shunt active power filter in three phase three wire and four wire system. If the non active powers are compensated the voltage is then distorted, so this strategy could not satisfy the critical load. In this paper, a proton exchange membrane pem fuel cell power plant is used to improve the filtering performance of the conventional active power filter, as well as simultaneously contribute with the electric grid to supply the power to the load. This is a video demonstration of the simulink model of shunt apf. Comparison of three phase shunt active power filter. Shunt active power filter compensates current harmonics injecting equal and 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 the opposite direction. Matlabsimulink model based shunt active power filter using. Active power filters have been widely used for harmonic elimination. Abdalla mohamed abdeiaziz mohmaed abdeihaflz fahmy from egypt.