A bridge rectifier and a load is connected across the supply to ensure the performance of the transmission line without apf. Economically it is not good option for power quality improvement. It is composed of series active filter connected in series to. Now, the apf must be tested at the worst conditions, hence, the. 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 bachelor of technology in electrical engineering by preetam kumar nanda 110ee0212 under the guidance of prof. In this paper, a shunt active power filter sapf control scheme. Improvement of power quality using irptheory base shunt. Reduction of harmonics using active filter for power quality improvement conference paper pdf available june 2017 with 866 reads how we measure reads. The primary objective of this paper is to model and develop the proposed new shunt active power filter for the current harmonics suppression using simulinkmatlab, for power quality improvement. Pdf reduction of harmonics using active filter for power. Furthermore, with a suitable control technique, the active power filter can also reward the load power factor. The proposed approach has been tested and validated on the matrix converter using mat labsimulink. To get this, it is often necessary that the load exchanges with the network with net null consumption. Then a brief description of the implemented solution is made.
There are two routes to the reduction of power quality problems. Egg, shahid chamran university, ahvaz, iran abstract. Power quality phenomena include all possible situations in which the waveform of the supply voltage voltage quality or load current current quality deviate from the sinusoidal waveform at rated frequency with amplitude corresponding to the rated rms value for all three phases of a. In this way, the power distribution system sees the non linear load and the active power filter as an ideal resistor.
Typical esp installation scheme of a system with 24 power supplies. Power quality improvement features for a distributed generation system using shunt active power filter. It is composed of series active filter connected in series to the. Improvement in semiconductor apparatus technology has fuelled a revolution in. Power quality improvement with a shunt active power filters using matlab simulink d. A fuzzy logic controller flc with fast reference voltage generation to correct and regulate unbalance voltage in threephase system is proposed. Power quality improvement using a dvr dynamic voltage.
So importance is being given to the development of active power filters to solve these problems to improve power quality among which shunt active power filter is. A few aspects of power quality improvement using shunt active power filter c. Review of active power filters for improvement of power. Hybrid active filter with proposed control algorithm for three phase hybrid power filter is studied here.
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. Active power filters apf are filters, which can perform the job of harmonic elimination. Power quality improvement in matrix converter using hybrid filter international organization of scientific research 3 p a g e iii. In this paper, an optimal method for active power filter is proposed to improve power quality. A few aspects of power quality improvement using shunt. The upqc employs two voltage source inverters vsis that is connected to a dc. Power quality improvement with a shunt active power filters using. Active power filter, harmonics mitigation, power electronics, power quality, voltage source inverter. Compensation of power quality problems using active power. Harmonic filters, passive or active, can be added to.
Novel method for power quality improvement using active. Improvement of power quality using irptheory base shunt active power filter r. Transformers, motors, cables, interrupters and capacitors are the some equipment which is affected by harmonics converters mainly produces notches and they basically affect the electronic control devices. Keywordsmatrixconverter,shunt active filter,power quality,current harmonics 1. The control system of apf is based on combination of the synchronous detection method, instantaneous power theory, and output of dc capacitor voltage regulator. Active power filters for power quality altro transformers. Pdf active filtering of electric power has now become a mature technology for. Line power quality improvement for esp systems using multipulse and active filter concepts thiago soeiro, jurgen biela, jorgen linner, per ranstad, and johann w. Raju institute of technology, narsapur, medak dist,telangana, india1 m. They showed that the value of p0 can be delivered from the power source to the active filter through the coordinates, and then the active filter can supply this power to the load through the 0 coordinate see fig. Request pdf a new optimal approach for improvement of active power filter using fpso for enhancing power quality in the recent years, development of industry cause to increase nonlinear and. The active power filters are used to filter out both higher and lower order harmonics in the power system.
A hybrid filter constructed of a shunt active filter and distributed passive filters used for power quality improvement. D thesis submitted to jawaharlal nehru technological university anantapur 92 it can be observed from the above waveforms and tables that the transformer contains current harmonics of around 16% and voltage harmonics of 4%. Shah abstract this paper explains various power quality problems in distribution systems and its solutions with the help of power electronics based equipment. Control of current source active power filter using unit vector template in three phase four wire unbalnced system, peds 2007. Line power quality improvement for esp systems using multi. Power quality, voltage sag voltage swell, series active power filters, active filters. A harmonic is a component of a periodic wave having a frequency that is an integral multiple of the fundamental power line frequency of 60 hz. Power quality is defined as the extent to which both the utilization and distribution distresses the electric power system affects the efficacy of electrical equipment. In this thesis three phase three wire voltage source shunt active filter has been implemented. Tech, department of eee, jntp university pulivendula, y. Installing a filter for nonlinear loads connected in power system would help in reducing the harmonic effect. Rakhonde4 1 ug, lectrical ngineering epartment, ssot, maharashtra, india 2 ug, electrical engineering department, ssot, maharashtra, india 3ug, lectrical ngineering epartment, ssot, maharashtra, india. Prema latha abstract power quality standards ieee519 compel to limit the total harmonic distortion within the acceptable range. It is aimed at providing a broad perspective on the status of af technology to researchers and application engineers dealing with power quality issues.
The current compensation characteristic of the shunt active power filter is. The proposed compensation scheme for matrix converter the objective of this work is to design a shunt hybrid passive active filter to eliminate the load harmonics. A upqc, combines the operations of a distribution static compensator dstatcom. Power quality improvement for matrix converter using shunt. The poor power quality can degrade or damagethe electrical equipment connected to the system. D lmiste, associate professor department of eee, padmasri dr. Then active filter is used in place of passive filter, because of their good dynamic response in load and harmonic variation. Enhancement of power quality using active power filters. Shunt active power filter for power quality improvement in distribution systems issn. Harmonic distortion thd can be reduced by implementing combination of active and passive filters. Compensation of power quality problems using active power filter. Issn 22295518 power quality improvement in deregulated. Introduction the power value pq problems in power utility distribution schemes are not new, but only recently their consequences have gained public perception.
Overview deltas active power filter apf2000 is your key to a clean grid for more efficient production. The unified power quality conditioner upqc is a custom power device, which mitigates voltage and currentrelated pq issues in the power distribution systems. Novel method for power quality improvement using active power filter student details. Chapter 5 power quality improvement by using power active filters ph. Improvement of power quality using hybrid power filter. Power quality improvement using a dvr dynamic voltage restorer risha dastagir1. Power quality improvement with a shunt active power. An inductive active filtering method for power quality. Power quality improvement solutions varset standard capacitor banks the va the varset detuned capacitor banks provide power factor correction in electrical distribution networks with moderate levels of harmonic content.
In electrical plants the loads draw from the network electric power active as power supply source e. Power quality improvement using active shunt power filter using pi controller viki s. P, india in this paper, we present a case study that contains a dpfc. At this time active power filters have been developed to improve power quality. Devaraju sree vidyanikethan engineering college tirupati, india abstract this paper introduces the terminology and various issues related to. A new optimal approach for improvement of active power. It mainly deals with improvement of major power quality issues like harmonic elimination, reactive power compensation, power factor correction and load balancing due to nonlinear load. Analysis of power quality improvement using active shunt. Power quality improvement using active and passive power filters. 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. Polytecnic, roorkee, uttrakhand, india 2assistant professor, nitttr, chandigarh, india abstractpoor quality of electric supply is normally caused by power line disturbances such as transients, notches. The equipment such as shunt, hybrid and series active power filters are.
Harmonic filters, passive or active, can be added to the system to suppress harmonic frequencies. Active power filters can be used to filter out harmonics in the power system which are significantly below the switching frequency of the filter. V patel college of engineering, kherva, india patel. Power quality improvement solutions schneider electric. Todays automation equipment benefits us with a more convenient life style and cost savings from higher production efficiency, however it can also bring significant power distortion problems that can lead to energy loss, increasing costs and many other power quality issues. In this paper, power quality problems of dispersed generation low voltage systems are introduced and the necessity of using hybrid filters instead of active or passive filters alone are discussed. Improving the power quality may be provided using a threephase series active filter 5. Shunt active power filter for power quality improvement in. The interest in power quality is explained in the context of a number of much wider. Active filters for power quality improvement repositorium uminho. Enhancement of power quality using advanced series active.
The adjusted parameter values are transferred to this identical controller at each time step. Performance analysis of power quality improvement using. Power quality improvement for passive shunt filter by. Power quality enhancement using active power filters. The pq theory is introduced followed by the presentation of some active power filters topologies. Shunt active filter for power quality improvement core. Pdf power quality improvement using active and passive power. A hybrid filter constructed of distributed passive filters and a pv connected shunt active filter used for power quality improvement in pv based. When dvrs voltage disturbance occurs, active power or energy should be. The current compensation characteristic of the shunt active power filter is shown in fig.
The comparison of simulation results for passive and active filter separately used with matrix converter with the result of matrix. The proposed approach has been tested and validated on the matrix converter using matlabsimulink. Power quality improvement features for a distributed. Power quality improvement by suppressing harmonics using. Power quality improvement using active shunt power filter. The series capacitor and reactor combination is tuned below the.
The proposed compensation scheme for matrix converter the objective of this work is to design a shunt hybrid passiveactive filter to eliminate the load harmonics. Active filters are a perfect alternative to the passive. Active power filter improvement by new dc link for power quality enhancing. Electricity consumption has been increasing so rapidly once in line with the development of the country to achieve its status as the industrial. Power quality improvement in matrix converter using hybrid. In this way, the power allocation system sees the non linear load and the active power filter as an ideal resistor. The current compensation quality of the shunt active power filter is shown in fig. It mainly deals with improvement of major power quality issues like harmonic elimination, reactive power compensation, power factor correction and. The simulation results are shown to demonstrate the advantages of the proposed scheme. Active filter also use for the compensation of more than one harmonics and reactive power compensation.
Pdf design of series active filter for power quality improvement. The compensation capacity of a particular dvr depends on the maximum voltage injection capability and the active power that can be supplied by the dvr. Enhancement of power quality using active power filters g. Due to the intensive use of power converters and other nonlinear loads in industry and by consumers in general, it can be observed an increasing deterioration of. Active power filter improvement by new dc link for power. Active filter may correct the voltage unbalances and regulate it to the desired. Improvement of technologies devoted to ac induction machine drive and, in particular, realization of fast electronic switches has developed the use of active filters. One of the way out to resolve the issue of reactive power would be using filters and tcr, tsc with combination in the power system.
Active filter may correct the voltage unbalances and regulate it to the desired level 20. How to improve the power quality with harmonic filters. The design concept of proposed adaptive controller for shunt active filter has been verified through simulation and experimentation. Matlab simulink of a active power filter apf compensating the harmonics and reactive power created by nonlinear loads in steady and in transients. The objective of this chapter develops the proposed new shunt active power filter for the current harmonics suppression using simulink matalab for power quality improvement. Matlabsimulink model based shunt active power filter.