The active power filters are basically classified into two types. This paper presents the design and simulation of a singlephase shunt active power filter for harmonic and power factor compensation of multiple nonlinear loads. In this paper, the modeling and simulation of singlephase shunt active power filter controlled with fuzzy logic controller using matlab simulink fuzzy inference system fis, as. Pdf active power filter with fast pi controller using. Three phase shunt active power filter using pq theory file. Hybrid active power filter the hybrid active power filter topology is shown in fig. The thd with active power filter included is observed to be 4. Initial position of d axis is chosen in such a way that active part of current is given by d axis. Pdf simulation a shunt active power filter using matlabsimulink. It presents the analysis and simulation using matlab simulink of a active power filter apf compensating the harmonics and reactive power created by nonlinear.
One of the equipment which is used to eliminate such harmonics is active power filter apf that is employed in many power networks and industries to suppress the current harmonics generated by nonlinear loads like rectifiers. Presence of power filters using semiconductor switches has proved to be a solution to the electric distribution system facing these problems reactive power, harmonics, and unbalanced loading. Matlab simulink of a active power filter apf compensating the harmonics and reactive power created by nonlinear loads in steady and in transients. Harmonics, thd, active filters, shunt active filter. The theoretical concepts underlying the design of shunt active filters are presented. International journal of scientific and research publications, volume 3, issue 12, december 20 1 issn 22503153 matlabsimulink model based shunt active power filter using fuzzy logic controller to minimize the harmonics swati pal, pallavi singh bondriya, yogesh pahariya. The proposed system compensates the sag and swell problems efficiently in matrix converter. Shunt active power filter for power quality improvement in.
Elimination of harmonics using active power filter. Shunt active power filter file exchange matlab central. The simulation results have been obtained by using matlab simulink. Currently they are based on pwm converters and connect to low and medium voltage distribution system in shunt or in series. This paper present the simulink model of shunt active filters for improvement of. Chakravarthy,control of shunt active power filters in power system using matlab simulink vol. Matlab simulink environment and experimental results. Active power filter sapf using particle swarm optimization pso. In this paper, the implementation of a shunt active power filter with.
Reduction in harmonic distortion of the system using active. Objective harmonic compensation with or without reactive power compensation flicker compensation voltage regulation rating below 100kva 100va 10 mva above. This paper presents the analysis and simulation using matlab simulink of a threephase four wire neutral clamped active power filter apf compensating the harmonics and reactive power. Introduction in a modern power system, due to broader applications of nonlinear loads such as power. Modelling and analysis of controller for threephase shunt active. Stan baciu and gheorghe livint department of electrical engineering technical university of iasi 700050, iasi, romania email. Conventional proportionalintegralderivative pid control based shunt apf is. Shunt active power filter model based on 400volts 3 phase 3 wire system. Harmonic compensation using shunt active power filter in. This paper shows the method of improving the power quality using voltage source inverter based shunt active power filter. It measures load current and then transforms to dq0 coordinate system. Reduction in harmonic distortion of the system using active power filter in matlab simulink. Matlab simulink of a active power filter apf compensating the harmonics and reactive power created by nonlinear. Hysteresis control technique for shunt active filter there are various types current controlled.
Pdf a circuit of a multiphase active power filter based on multistage inverter architecture was introduced. Elimination of harmonics using active power filter based on dq reference. Active power filter apf is an effective approach in harmonic suppression. A matlab simulink model of an active power filter based. Instantaneous power theory is then applied to shunt active. Active power filters apfs are now seen as a viable alternative over the classical methods to compensate harmonics as well as reactive power requirements of the nonlinear loads. Modelling and simulation of active power filters paper iaeng. Three phase shunt active power filter using dq0 transformation. Article information, pdf download for understanding the modelling and analysis of a shunt. In the proposed control method, the active power filter apf reference voltage vector is generated instead of the reference current, and the desired apf output voltage is generated by svpwm. Shunt active power filter for harmonic compensation of. Series active filters and filter based on instantaneous reactive power theory is carried out using matlab simulink toolbox. Matlab simulink, series active power filter, power quality.
Simulation results indicate that the proposed active power filter can restrain harmonics of electrical source current effectively and also demonstrates the usability of simulation. Topologies of active power filter 1 shunt active power filter and 2 series active power filter ronak mistry et al, international journal of computer science and mobile computing, vol. This paper focuses on describing the shunt active filter structure and design. Design of shunt active power filter to eliminate the harmonic. The problem of quality electrical energy provided to the users has arisen. Balanced system nonlinear load figure8shows the distorted threephase source current is and nonlinear load current il waveforms under a balanced system and with a nonlinear load connected. In the last step, the gating signals for the solidstate devices of the active filter are created using hysteresis, pulsewidth modulated control techniques. The shunt active power filter is simulated in matlabi simulink. Each apf module is an independent harmonic filtering system, and users can change the harmonic filtering system rating by adding or removing apf modules. Its advantages are good current control capability, easy protection, and high reliability over series filters. Pdf along with increasing demand on improving power quality, the most popular technique that has been used is active power filter apf. Matlabsimulink model based shunt active power filter using. A matlab simulink model of an active power filter based on. One of the most popular active filters used for compensating reactive power and harmonics is the shunt active filter that is shown in figure 1.
Reduction in harmonic distortion of the system using. Introduction harmonic signal can be described as a signal whose frequency is the integer multiple of the fundamentalreference frequency. Simulation a shunt active power filter using matlabsimulink. The active power filters are used to filter out higher as well as lower order harmonics in the power system. This is due to the increasing presence in network of nonlinear loads. Study and simulation of instantaneous power theory is also presented. Simulation of threephase bridge rectifier using matlab. Design of shunt active power filter to eliminate the. The report deals with the basic working and classifications of active power filters, its reference signal generation techniques and some of the controlling schemes of apf.
The system is modeled in matlab simulink to consist of an uncontrolled rectifier and an ac controller as the nonlinear loads, with an active filter to compensate for the harmonic current injected by. One of the equipment which is used to eliminate such harmonics is active power filter apf that is employed in many power networks and industries to. Three phase shunt active power filter using pq theory. Pdf matlabsimulink model based shunt active power filter. Active power filter design and simulation by combining labview and simulink abstract. This paper will discuss and analyze the simulation result for a threephase shunt active power filter using matlab simulink program. This paper presents modeling and simulation of a shunt active power filter in frequency domain, using matlab and its tools simulink and power system blocket. Converter vsc based shunt active power filter for harmonic compensation. It solves the problem of harmonic current in power system.
Simulink model of the proposed shunt active power filter sapf. The main functions of the controllers are to maintain the power quality by controlling the active and the reactive power of the grid. Pdf a matlab simulink model of an active power filter based on. This paper presents the analysis and simulation using matlab simulink of a threephase four wire neutral clamped active power filter apf compensating the harmonics and reactive power created by. One of the most popular active power filters is the shunt apf. Active power filter apf is one of the effective means for harmonic current compensation in power grid. Active power filters were used to compensate the harmonics in the power system. As a result, rating of the active filter is greatly reduced with the proposed system.
Understanding the modelling and analysis of a shunt active power. Threephase threelevel npc shunt active power filter. Modelling and simulation of active power filters paper. 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. To obtain result for this paper, the matlab simulink was used as a simulation. Shunt active power filters sapfs are mainly used at customer end for the compensation of harmonics, reactive power, and input current balancing. Abstract active power filters are widely used for the reduction of harmonics in the power system caused by nonlinear loads. For active power filter modela, the researcher used a butterworth type bandpass filters. Eliminating voltage and current harmonics reactive power compensation regulating terminal voltage compensating the voltage flickering 10. Livint, a matlab simulink approach to shunt active power filters, in proceedings of the 25th european conference on modelling and simulation ecms 11, pp. It is controlled to drawsupply a compensated current fromto the utility, such that it cancels harmonic currents of. The operation of apf is verified using the simulations in matlab simulink. Simulink model for the voltage sags and swells mitigation.
Pdf simulation a shunt active power filter using matlab. Active power filter with fast pi controller using matlabsimulink. A unified power flow controller electrical device for providing fastacting reactive power compensation on highvoltage electricity transmission networks. Parameters value dc bus voltage 480v dc link capacitor voltage 400v line inductance 0. The system is modeled in matlab simulink to consist of an uncontrolled rectifier and an ac controller as the nonlinear loads, with an active filter to compensate for the. Linear loads sinusoidal current with sinusoidal voltage 2.
Shunt active and series active filtersbased power quality. This paper concentrates on the design and application of threephase shunt active power filter sapf by using pq theory to mitigate the harmonics which are created by nonlinear loads. The simulink of shunt active power filter with sinusoidal pulse width modulation is shown in fig. The usefulness of the simulation approach to apf is. Shunt active power filter simulink simulation and dsp. An active filter approach to the reduction of the dc link capacitor project id. This paper focuses theoretical topics on a threephase. Active power filter consists of voltage source converter operating at relatively high frequency to give the output which is used for cancelling low order harmonics in the power system network. Shunt active power filter simulink simulation and dspbased. Matlabsimulink model based shunt active power filter. Series active power filters must operate in conjunction with shunt passive filters in order to compensate load current harmonics. A matlab code is developed to generate the svpwm switching pulses fed to the twolevel.
Active power filter, hybrid filter, passive filter, current harmonic. This paper presents a shunt hybrid active power filter application mainly. Design and simulation of three phase shunt active power filter using srf theory rejil c1, anzarim2 and arun kumar r3 1. Design and simulation of synchronous reference frame based. A matlab code is developed to generate the svpwm switching pulses. Modeling and simulation of a pi controlled shunt active power. The use of active power filters for power quality improvement is discussed in 2. It is found that the active filters are facing some drawbacks when employed for power. The matlab simulink tool is very effective as it offered an integrated environment between the designed control algorithm and the electrical network models. Introduction power quality phenomena embrace all doable things during which the wave form of the provision voltage voltage quality or load current current quality deviate from the curving wave form at rated frequency with amplitude. Oct 20, 2011 active power filter design and simulation by combining labview and simulink abstract. Mathematically, it is described as the ratio of the frequency of such a signal to. Simulation a shunt active power filter using matlab simulink. Simulation of shunt active basically two types of active filter.
Active power filter design and simulation by combining. This paper deals with the modelling and analysis of a shunt active power filter by the use of a. Elimination of harmonics using active power filter based on dq reference frame theory and svm. A simulink model to improve total harmonic distortion thd using shunt active power filter by, ranganath vallakati master of science in electrical engineering university of north dakota 2. Elimination of harmonics using active power filter based. In the proposed scheme two types of loads have been considered as nonlinear loads. A matlab simulink approach to shunt active power filters george adam, alina g.
Traditional researches on apf are mostly conducted in matlab simulink platform, which can validate the apf algorithm and simulate the compensation effect. To validate and highlight the performance of shunt active filters a matlab simulink model was developed. Harmonic compensation using shunt active power filter in power system using matlab neha kumari1, isha awashthi2 1, 2 iec college of engineering and technology, greater noida, uttar pradesh, india abstract. An active filter approach to the reduction of the dc link. Modeling of frequency domain control of shunt active power filter using matlabsimulink and power system blocksetfrequency domain control, harmonics and reactive. Feb 26, 20 active power filters are simply power electronic converters, specifically designed to inject harmonic currents to the system. Shunt active power filter the basic block diagram including non linear load compensation principle of a shunt active power filters based on threelevel npc inverter is shown in figure 1. Simulation results of a shunt active power filter using p. It uses clarke transformation to calculate value of p0,p and q, filters out constant part of p and thus finding the compensating part of p0,p and q. Pdf modeling of frequency domain control of shunt active. Shunt active power filter is simulated using matlab simulink under different load conditions and results are compared. It may lead equipment connected to it to overheat and sometimes cause damage.
A circuit of a multiphase active power filter based on multistage inverter architecture was introduced. Aug 19, 2017 it solves the problem of harmonic current in power system. Each stage of the filter uses the pulsewidth modulation pwm method. Upqc power quality improvement active power filter. Threephase active harmonic filter open model this example shows the use of a shunt active harmonic filter ahf to minimize the harmonic content propagated to. Along with increasing demand on improving power quality, the most popular technique that has been used is active power filter apf. The paper is focused on building the matlab simulink model of an ac power supply system including a singlephase active power filter with a twostage inverter. The usefulness of the simulation approach to apf is demonstrated, have a better power quality insight using matlab simulink in order to develop new fuzzy. Performance analysis of shunt active power filter with. Pdf design and simulation of single phase shunt active. Design and development of three phase shunt active filter. Elimination of harmonics using active power filter based on dq reference frame theory.
Active power filter control using adaptive signal processing. Figure 10 shows the thd spectrum with active power filter in the circuit. Shunt active power filter simulink simulation and dspbased hardware realization che yanbo zhou fudan k. The system comprises balanced threephase voltage source feeding, a threephase diode bridge rectifier with resistance and. To prove the flexibility and effectiveness of the proposed scheme. Shunt active power filter shunt active power topology is most popular topology for current harmonics elimination due to. It also compensate reactive power and balances load on three phaseif load is unbalanced. For the active power filter modelb and modelc, the researcher used the chebyshev type one bandpass filter and chebyshev type two bandpass filter respectively. A model of a threephase threewire shunt active power filter based on synchronous reference frame control strategy has been designed and simulated on matlab simulink. Performance of shunt active power filter is checked with the use of matlab software.
The simple shunt active filter arrangement with nonlinear load is considered. However, the required dc link voltage is much less when compared with a standard voltage source type active power filter. Control strategies of shunt active power filter sciencedirect. Design and simulation of three phase shunt active power. A matrix converter produces significant harmonics and nonstandard frequency components into load. Jul 15, 20 shunt active power filter model based on 400volts 3 phase 3 wire system. Potdar, comparison of topologies of shunt active power filter implemented on three phase four wire system, vol1, issue5, 2011. A matlab simulink simulation model of a traction drive system was used to establish the performance requirements for an active power filter.
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