The system can be applied to adjacent feeders to compensate for supplyvoltage and load current imperfections on the. Power quality improvement of wind energy conversion system. This project presents a new unified power quality conditioning system mcupqc, capable of simultaneous compensation for voltage and current in multibusmultifeeder systems. Matlab simulink model unified power quality conditioner. The results are analyzed and presented using matlab simulink software.
Vinod kumar, abstractproliferation of electronic equipment in commercial and industrial processes has resulted in increasingly sensitive electrical loads to be. A new synchronousreferenceframe based control method and dq0 theory is used to improve the power quality at the point of common coupling on power distribution systems under unbalanced and distorted load conditions. Performance study of unified power quality conditioner using matlab simulink kuldeep kumar singh, j. Power quality enhancement by unified power quality conditioner using ann with hysteresis control rvd rama rao associate professor dept of eee, narasaropeta engineering college narasaraopet, guntur dt, a. This paper presents a new unified power quality conditioning system mcupqc, capable of simultaneous compensation for voltage and current in multibusmultifeeder systems. The control strategies are modeled using matlabsimulink. The operation of upqc with dg has been evaluated through simulation studies using matlab simulink software. Upqc power quality improvement, active filter matlab. Mar, 2020 one of the many solutions is the use of a combined system of shunt and active series filters like unified power quality conditioner upqc this device combines a shunt active filter together with a series active filter in a backtoback configuration, to simultaneously compensate the supply voltage and the load current or to mitigate any type. The results are analyzed and presented using matlabsimulink software. Design of interline unified power quality conditioner for power quality disturbances using simulink g. The system can be applied to adjacent feeders to compensate for supplyvoltage. Simulink software simulink simulation and link is an extension of matlab by math works inc.
The operation of proposed system was verified throughsimulations with. Unified power quality conditioner simulink model required. Mar 10, 2017 srf and real power theory based control of a nine switch converter based upqc abstract. Modelbased control of upqc has attracted attentions in recent years, which aims to regulate the source current and the load voltage to the desired reference signals in spite of the existence of harmonic components in the supply voltage and the load current, possible sag or swell in the supply voltage. The controllers mainly used for power quality improvement are fuzzy logic controller and. Recently a nineswitch upqc nsupqc is proposed, but suffers with certain limitations like limited reference amplitude and phase shift, twice the. Distribution system, interline unified power quality conditioner iupqc, power quality, pwm technique, sensitive load, voltage sag. The harmonics required at the receiving end are supplied by the inverter part of unified power quality conditioner. Power quality improvment by upqc using ann controller. Unified power flow controller upfc, as a representative of the third generation of facts devices, is by far the. Matlab simulation of upqc for power quality mitigation using an. Matlab simulation of upqc for power quality mitigation using.
The elimination of the harmonics in the grid and the usage of clean energy resources in the power electronics applications become popular world widely. Design and simulation of phase locked loop c ontroller. Index terms uninterruptible power supplies ups, unified power quality conditioner upqc. Subhransu sekhar dash professor srm university, chennai,india abstract in this paper unified power quality conditioner upqc is being. Power quality improvement by dynamic voltage restorer and. The simulation system determines the performances of such system and offers future perspectives on unified power quality. One of the many solutions is the use of a combined system of shunt and active series filters like unified power quality conditioner upqc this device combines a shunt active filter together with a series active filter in a backtoback configuration, to simultaneously compensate the supply voltage and the load current or to mitigate any type of voltage and current fluctuations and power factor correction in a power distribution network. Multi converter unified power quality conditioning mcupqc.
Unified power quality conditioner for grid integration of. Mitigation of power quality problems using unified power. Power quality problems various types of power quality problems along with their causes and effects are discussed below. Unified power quality conditioner,series active power filter,shunt active power filter, power quality introduction. Mathworks is the leading developer of mathematical computing software for engineers and scientists. Pdf design and simulation of a unified power quality conditioner. Design of a unified power quality conditioner upqc. The results of simulation in matlabsimulink software show that the mentioned system operates correctly. Simulation of unified power quality conditioner for power quality improvement. This paper proposes about a powerful control mechanism of upqc unified power quality conditioner work on voltage source inverter which can effectively compensate source current harmonics and also mitigate all voltage collapse such as dip, swell, voltage unbalances and harmonics. This paper proposes a fuzzy logic based new control scheme for the unified power quality conditioner upqc for minimizing the voltage sag and total. Interline unified power quality conditioner iupqc, specifically aims at the integration of series vsc and shunt vsc to provide high quality power supply by means of voltage sag swell.
Index terms uninterruptible power supplies ups, unified power quality conditioner upqc, distributed generation. Dc source voltage is the capacitor and at simulink. Unified power quality conditioner upqc inverteri compensates for sag through a tuned filter and voltage transformer inverterii slcvc synchronous link converter var compensator provides var to the load, isolates load current harmonics, makes input power factor unity slcvc maintains the charge of the dc link capacitor low pass filter. In addition, the proposed unified power quality conditioner exports the photovoltaic power to the grid using a boost converter, perturbed and observed maximum power point tracking algorithm, compensates the reactive power and filters the current and voltage harmonics confirmed by the total harmonic distortion values, such as 4. Unified power quality conditioner upqc using matlab. Enhancement of power quality by using unified power quality.
International journal of engin eering and advanced. Matlab simulink model unified power quality conditioner jobs. Srf and real power theory based control of a nine switch. Design and simulation of a unified power quality conditioner. A conventional unified power quality conditioner upqc is a backtoback shunt and series converters with a dclink capacitor, requires 12 switches to resolve voltage and current related power quality issues. A upqc is a combination of shunt and series apfs, sharing a common dc link has been well presented in 4. Unified power flow controller upfc, as a representative of the third generation of facts devices, is by far the most comprehensive facts device, in power system steadystate it can implement. A simulation study of the proposed topology has been carried out using matlab simulink software and the results are presented.
Issn 22221727 paper issn 22222871 onlinevol 3, no 3, 2012 simulation of unified power quality conditioner for powerquality improvement using fuzzy logic and neural networks l. The theory and modeling of unified power quality conditioner upqc, a facts device, is described in this paper. The cost of the device, which is higher than other custom power facts devices, because of twin inverter structure and control. Design and simulation of a unified power quality conditioner fed by solar energy. Interline unified power quality conditioner iupqc, specifically aims at the integration of series vsc and shunt vsc to provide high quality power supply by means of voltage sagswell compensation, harmonic elimination and power factor correction in a power distribution network, so that improved power quality can be made available at the point. The power flow, in the unified power quality conditioner system is analysed. The controller can control active and reactive power flows in a transmission line. The results of simulation in matlab simulink software show that the mentioned system operates correctly. Simulation of unified power quality conditioner for power. It is a versatile device that can compensate almost all power quality. Unified power quality conditioner upqc is one of the best custom. The critical problem of a unified power quality conditioner is to find. Hysteresis control of a unified power quality conditioner for.
Unified power quality conditioner for grid integration of wind generators. Abstractin this paper an ideal control strategy of harmonics and the loadreactive power demand compensation by connecting a threephase unified power quality conditioner upqc is presented. Upqc power quality improvement, active filter matlab simulink. A comparative analysis of upqc for power quality improvement. Photovoltaic based improved power quality using unified power. The proposed system is comprised of series and shunt inverters which can compensate the sag, swell and unbalance voltage, harmonics and also the reactive power. Matlab simulation of upqc for power quality mitigation.
Control of interline unified power quality conditioner for power quality disturbances using simulink g. This project presents a new unified powerquality conditioning system mcupqc, capable of simultaneous compensation for voltage and current in multibusmultifeeder systems. Proliferation of electronic equipment in commercial and industrial processes has resulted in increasingly sensitive electrical loads to be fed from power distribution. Results obtained from this study provide useful information regarding the behaviour of different controllers used for power quality improvement connected to distribution line. The term power quality has gained importance in last few. Keywords power quality, upqc, load variation, voltage sags, renewable energy source. Aug 05, 2017 this paper presents a new unified power quality conditioning system mcupqc, capable of simultaneous compensation for voltage and current in multibusmultifeeder systems. Multi converter unified power quality conditioner mcupqc is one of the new power electronics devices that are used for enhancing the pq. Introduction power quality is the set of limits of electrical properties that allows electrical systems to function in their intended manner without significant loss of performance or life. Power quality improvement of wind energy conversion. Custom power devices cpd such as dynamic voltage restorer dvr and unified power quality conditioner upqc provide a level of reliability and power quality that is urgently. Jan 26, 2012 the results are analyzed and presented using matlabsimulink software.
The upqc proposed in this paper consists of thyristor controlled capacitor banks. Model predictive control of unified power quality conditioner. A new unified power quality conditioner for grid integration of pv system and power quality improvement feature distribution system prakash vodapalli. This paper proposed a new efficient control system for unified power quality conditioner it is possible to reduce the voltage fluctuations like sag and swell. This paper proposes a fuzzy logic based new control scheme for the unified power quality conditioner upqc for minimizing the voltage sag and total harmonic distortion in the distribution system consequently to improve the power quality. The operation of upqc with dg has been evaluated through simulation studies using matlabsimulink software. Upqc is a recent power electronic module which guarantees better power quality mitigation as it has both seriesactive and shuntactive power.
Unified power quality conditioner consists of combined series and shunt active power filters for simultaneous compensation of voltage and current. The unified power quality conditioner system is modelled using the elements of simulink. Introduction because of the application of sophisticated and more advanced software and hardware for the control systems the power quality has become one of the most important issues for power. Jan 26, 2012 simulation of unified power quality conditioner for power quality improvement using fuzzy logic and neural network 1. Unified power quality conditioner upqc is one modern device which deals with voltage and current imperfections simultaneously. Power quality improvement using voltage source converter. Index terms unified power quality conditioner upqc, reference signal generation, active filter, fuzzylogic controller. Unified power quality control was widely studied by many researchers as an eventual method to improve power quality of electrical distribution system. To reduce the power quality problems the flexible dual control technique of upqc is more reliable for power distribution system.
Conventional equipment for enhancement of power quality is becoming inadequate. Power quality improvment by upqc using ann controller shahab uddin baqar. Also, it can provide a part of sensitive load power during long voltage interruption. Unified power quality conditioner upqc using matlab irjet. Citeseerx modeling and simulation of unified power quality. This paper presents design, modeling and simulation of unified power quality conditioner system to improve the power quality. Communities more files in the power electronics control community. Unified power quality conditioner matlab simulation jobs.
Power quality improvment by upqc using ann controller ijert. The performance of proposed control system was analyzed using simulations with matlab simulink program, and experimental results with the hardware prototype. Professor narasaraopeta engineering college, narasaraopet 522 601, india dr. Matlab simulink software under unbalanced and distorted. Enhancement of power quality by using unified power. In the present paper, a unified power quality conditioner fed by solar energy which can also export active power to the grid is proposed. Index terms uninterruptible power supplies ups, unified power quality conditioner upqc, distributed generation dg, point of. Realization of unified power quality conditioner for. Improvement of power quality using an integrated control. It is a comprehensive custom power device, with integrated shunt and series active filters. Unified power quality conditioner series apf, and the other as a variable current source in the system to improve the power. The unified power quality conditioner upqc is a versatile device and it mitigates both load current and supply. This paper presents the performance evaluation of unified power quality conditioner upqc for current and voltage harmonic elimination and improved power factor.
The unified power quality conditioner system is modeled using the elements of simulink and it is simulated using matlab. Simulation of unified power quality conditioner for power quality. A unified power quality conditioner upqc is relatively a new member of the custom power device family. Keywordspower quality, upqc, load variation, voltage sags, renewable energy source. Enhancement of power quality by using unified power quality conditioner with pid and fuzzy logic controller r v d rama rao assoc. Multi converter unified power quality conditioning mc. Photovoltaic based improved power quality using unified.
Power quality enhancement by unified power quality. The proposed upqc system can improve the power quality at the point of common. In this configuration, one shunt voltagesource converter shunt vsc and two or more series vscs exist. Modern power system comprises of complex networks, where many generating stations and load centres are interconnected through long power transmission and distribution networks. Power quality, unified power quality conditioner, indirect matrix converter, sliding mode control. This work proposes the use of upqc to improve the power quality and. I am also working on upqc in order to pursue a masters degree, can we exchange our ideas and simulation with each other. Control of interline unified power quality conditioner for. Hysteresis control of a unified power quality conditioner. Unified power quality conditioner upqc using matlab hiya divyavani, prof.
Pdf unified power quality conditioner upqc with pi and. Design and simulation of upqc by synchronous reference frame. Multiconverter unified powerquality conditioning system. Simulation of unified power quality conditioner for. The proposed scheme has been evaluated and tested using matlab simulink software. Design and simulation of phaselocked loop controller based. The upqc is modelled using simulink and is simulated using a software called matlab. Issn 22221727 paper issn 22222871 onlinevol 3, no 3, 2012 simulation of unified power quality conditioner for powerquality improvement using fuzzy logic and. Power quality has become a crucial factor today due to wide application of power electronics based equipment. Harmonics, reactive power, voltage sag, voltage swell, matlab simulink 1. Design and simulation of phaselocked loop controller. Several factsdevices have been introduced for various. In this study, unified power quality conditioner upqc is designed and simulated by synchronous reference frame theory.
Citeseerx document details isaac councill, lee giles, pradeep teregowda. Dec 09, 2017 the controller can control active and reactive power flows in a transmission line. Interline unified power quality conditioner iupqc, specifically aims at the integration of series vsc and shunt vsc to provide high quality power supply by means of voltage sagswell. The proposed scheme has been evaluated and tested using matlabsimulink software. In the present paper, a unified power quality conditioner fed by solar energy which. Custom power devices cpd such as dynamic voltage restorer dvr and unified power quality conditioner upqc provide a level of reliability and power quality.
Unified power quality conditioner upqc is one of the best custom power device used to compensate both source and load side problems. The simulation system determines the performances of such system and offers future perspectives on unified power quality conditioners. Mar, 2020 multi converter unified power quality conditioner mcupqc is one of the new power electronics devices that are used for enhancing the pq. Unified power quality conditioner upqc controller and normal power converter to be used for dfig control system. Pdf design of a unified power quality conditioner upqc engr.
Power quality improvement using unified power quality conditioner. The simulation results of multi bus system are presented in time domain. Design of interline unified power quality conditioner for. This work proposes the use of upqc to improve the power quality and presents the simulink model of upqc. Unified power quality conditioner, pv array, sag, swell, voltage interruption, harmonics and reactive. Implementation of unified power quality conditioner upqc in wind energy conversion system wecs more performance improvement is observed than the normal power converter system. Introduction the term power quality has gained importance in last few years. A unified power quality conditioner upqc is an integration of series and shunt active filters to improve power quality in a power distribution system. The design and the analyses have been performed with matlab simulink software. Protection against this situation is necessary because it adversely affects reliability and quality of power supply. The simulation results are listed in comparison of different control strategies and for the verification. Integrating the character of parallel power quality compensator and series power quality compensator, unified power quality conditioner upqc has generally been accepted as a new electric power. Simulation of unified power quality conditioner for power quality improvement using fuzzy logic and neural networks. Simulation of unified power quality conditioner for power quality improvement using fuzzy logic and neural network 1.
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