The document discusses selective harmonic current mitigation using a shunt active power filter (SAPF). It describes various harmonic detection methods and the operating principle of active power filters. The proposed selective harmonic current compensation method uses an SAPF to extract the fundamental component of current for the nonlinear and unbalanced loads, and selectively compensate the fifth harmonic. Simulation results show the total harmonic distortion is reduced from 16.25% to 3.39% using this selective harmonic current mitigation approach.
Power Quality Improvement in Distribution System using ANN Based Shunt Active...IAES-IJPEDS
This paper focuses on an Artificial Neural Network (ANN) controller based Shunt Active Power Filter (SAPF) for mitigating the harmonics of the distribution system. To increase the performance of the conventional controller and take advantage of smart controllers, a feed forward-type (trained by a back propagation algorithm) ANN-based technique is implemented in shunt active power filters for producing the controlled pulses required for IGBT inverter. The proposed approach mainly work on the principle of capacitor energy to maintain the DC link voltage of a shunt connected filter and thus reduces the transient response time when there is abrupt variation in the load. The entire power system block set model of the proposed scheme has been developed in MATLAB environment. Simulations are carried out by using MATLAB, it is noticed that the %THD is reduced to 2.27% from 29.71% by ANN controlled filter. The simulated experimental results also show that the novel control method is not only easy to be computed and implemented, but also very successful in reducing harmonics.
The Shunt Active Power Filter to Compensate Reactive Power and Harmonics with...ijtsrd
In this paper is to study the denomination Power quality and large refers to maintaining a proximal sinusoidal power distribution bus voltage at rated magnitude and frequency. This is mainly affected by the generation of harmonics. Even though electronic and non-linear devices are flexible, economical and energy efficient, they may degrade power quality by creating harmonic currents and consuming excessive reactive power. This paper shows the method of improving the power quality using shunt active power filter with proposed optimized PI. The proposed topic comprises of PI controller, filter hysteresis current control loop, dc link capacitor. The switching signal generation for filter is from hysteresis current controller techniques. With the all these element shunt active power filter reduce the total harmonic distortion. Its source current, compensating current and THD values are studied, then PI control strategy is applied then the differences in THD are compared. The PI feedback compensation design starts with the small signal system' transfer function. Then an optimum constant of PI for a Shunt-APF is proposed and implemented to enhance its response to compensation of harmonics of linear and non-linear loads. The obtained results have demonstrated the ability to compensate the current harmonics effectively under distorted source conditions. The fluctuation in the dc bus voltage of the filter depends on the compensation speed of the outer loop that regulates the dc bus voltage. The proposed shunt active filter model uses balanced linear and non-linear load works successfully lowers the THD within IEEE norms and satisfactorily works to compensate current harmonics. The model is made in MATLAB SIMULINK and successfully reduces the harmonic in the source current. Mr. Amit Kumar Rajan | Dr. E Vijay Kumar"The Shunt Active Power Filter to Compensate Reactive Power and Harmonics with optimized PI controller in a 3 Phase 3 Wire Distribution System" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-5 , August 2018, URL: http://www.ijtsrd.com/papers/ijtsrd18196.pdf http://www.ijtsrd.com/engineering/electrical-engineering/18196/the-shunt-active-power-filter-to-compensate-reactive-power-and-harmonics-with-optimized-pi-controller-in-a-3-phase-3-wire-distribution-system/mr-amit-kumar-rajan
report of Improvement of the Electric Power Quality Using Series Active and S...Vikram Rawani
The increase of nonlinear loads due to the proliferation of electronic equipment causes power quality in the power system to deteriorate. Harmonic current drawn from a supply by the nonlinear load results in the distortion of the supply voltage waveform at the point of common coupling (PCC) due to the source impedance. Both distorted current and voltage may cause end-user equipment to malfunction, conductors to overheat and may reduce the efficiency and life expectancy of the equipment connected at the PCC.
Performance analysis of three phase shunt hybrid active power filtereSAT Journals
Abstract Active filtering of electric power has now become a mature technology for harmonic and reactive power Compensation in AC networks. The past several years have seen a rapid increase of power electronics-based loads connected to low and medium voltage power distribution systems. These loads draw non-sinusoidal current from the mains, degrading the power quality by causing harmonic distortion. This paper proposes a three phase Shunt Hybrid Active Filter (SHAF) topology for harmonic reduction and power factor improvement in low voltage power distribution systems. The compensation current reference for the proposed SHAF topology is obtained by using synchronous reference frame theorem. This theorem simplifies the equations for the current reference estimation in d-q co-ordinates thus leading to a more efficient and fast computation. To generate the compensation current that follows the current reference, the hysteresis current control method is adopted for 2-level VSI in low voltage system, the system is verified by developing simulation model using MATLAB/Simulink simulation package and the results are presented. The performance of shunt active filter and the proposed shunt hybrid active filter topology in reducing total harmonic distortion (THD) is compared for low voltage distribution system. Keywords: SAPF, SHPF, PI control, THD, Hysteresis current pulse width modulation, D-Q reference frame theory.
presentation of Conference On Electrical And Electronic Engineering 2015sager alswed
The designed three phase SAPF based on instantaneous p-q theory was simulated in MATLAB /SIMULINK by using different load conditions i.e. R-L load, suddenly connected R-L load, and additional unbalance R load. Its application was successfully proved and the validity achieved by minimizing the harmonics and improving PF as summarized in Table 2. Consequently, the supply current is almost pure sinusoidal. THD observed was fund to be within the prescribed limits of 5% as recommended by IEEE-519 standard.
Power Quality Improvement in 3-Φ Power System with Shunt Active filter using ...AI Publications
Research paper focuses on enhancement of the power quality, Harmonic reduction and Reactive power compensation . Power quality problems became the foremost important concern now a days. Active filters with synchronous detection methodologies are vividly employed in distribution system to be sure that the harmonics generated by non-linear loads is reduced and leads to less voltage distortion and leads to lesser power superiority problems. The three physical characteristics that mostly underline the power quality and a power quality issues are Voltage, Current and Frequency. Harmonics is defined as a disturbance demonstrated in current or voltage or frequency waveforms which result in devastation, or failure of final equipment ..This paper examines the control of Shunt Active Power Filter with Synchronous Detection Method . Simulation results using MATLAB SIMULINK demonstrates the application of these methods to the control of Active Power Filter . Moreover, this work shows that how the power quality improvement in 3 phase is done with Synchronous Detection Method .
Power Quality Improvement in Distribution System using ANN Based Shunt Active...IAES-IJPEDS
This paper focuses on an Artificial Neural Network (ANN) controller based Shunt Active Power Filter (SAPF) for mitigating the harmonics of the distribution system. To increase the performance of the conventional controller and take advantage of smart controllers, a feed forward-type (trained by a back propagation algorithm) ANN-based technique is implemented in shunt active power filters for producing the controlled pulses required for IGBT inverter. The proposed approach mainly work on the principle of capacitor energy to maintain the DC link voltage of a shunt connected filter and thus reduces the transient response time when there is abrupt variation in the load. The entire power system block set model of the proposed scheme has been developed in MATLAB environment. Simulations are carried out by using MATLAB, it is noticed that the %THD is reduced to 2.27% from 29.71% by ANN controlled filter. The simulated experimental results also show that the novel control method is not only easy to be computed and implemented, but also very successful in reducing harmonics.
The Shunt Active Power Filter to Compensate Reactive Power and Harmonics with...ijtsrd
In this paper is to study the denomination Power quality and large refers to maintaining a proximal sinusoidal power distribution bus voltage at rated magnitude and frequency. This is mainly affected by the generation of harmonics. Even though electronic and non-linear devices are flexible, economical and energy efficient, they may degrade power quality by creating harmonic currents and consuming excessive reactive power. This paper shows the method of improving the power quality using shunt active power filter with proposed optimized PI. The proposed topic comprises of PI controller, filter hysteresis current control loop, dc link capacitor. The switching signal generation for filter is from hysteresis current controller techniques. With the all these element shunt active power filter reduce the total harmonic distortion. Its source current, compensating current and THD values are studied, then PI control strategy is applied then the differences in THD are compared. The PI feedback compensation design starts with the small signal system' transfer function. Then an optimum constant of PI for a Shunt-APF is proposed and implemented to enhance its response to compensation of harmonics of linear and non-linear loads. The obtained results have demonstrated the ability to compensate the current harmonics effectively under distorted source conditions. The fluctuation in the dc bus voltage of the filter depends on the compensation speed of the outer loop that regulates the dc bus voltage. The proposed shunt active filter model uses balanced linear and non-linear load works successfully lowers the THD within IEEE norms and satisfactorily works to compensate current harmonics. The model is made in MATLAB SIMULINK and successfully reduces the harmonic in the source current. Mr. Amit Kumar Rajan | Dr. E Vijay Kumar"The Shunt Active Power Filter to Compensate Reactive Power and Harmonics with optimized PI controller in a 3 Phase 3 Wire Distribution System" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-5 , August 2018, URL: http://www.ijtsrd.com/papers/ijtsrd18196.pdf http://www.ijtsrd.com/engineering/electrical-engineering/18196/the-shunt-active-power-filter-to-compensate-reactive-power-and-harmonics-with-optimized-pi-controller-in-a-3-phase-3-wire-distribution-system/mr-amit-kumar-rajan
report of Improvement of the Electric Power Quality Using Series Active and S...Vikram Rawani
The increase of nonlinear loads due to the proliferation of electronic equipment causes power quality in the power system to deteriorate. Harmonic current drawn from a supply by the nonlinear load results in the distortion of the supply voltage waveform at the point of common coupling (PCC) due to the source impedance. Both distorted current and voltage may cause end-user equipment to malfunction, conductors to overheat and may reduce the efficiency and life expectancy of the equipment connected at the PCC.
Performance analysis of three phase shunt hybrid active power filtereSAT Journals
Abstract Active filtering of electric power has now become a mature technology for harmonic and reactive power Compensation in AC networks. The past several years have seen a rapid increase of power electronics-based loads connected to low and medium voltage power distribution systems. These loads draw non-sinusoidal current from the mains, degrading the power quality by causing harmonic distortion. This paper proposes a three phase Shunt Hybrid Active Filter (SHAF) topology for harmonic reduction and power factor improvement in low voltage power distribution systems. The compensation current reference for the proposed SHAF topology is obtained by using synchronous reference frame theorem. This theorem simplifies the equations for the current reference estimation in d-q co-ordinates thus leading to a more efficient and fast computation. To generate the compensation current that follows the current reference, the hysteresis current control method is adopted for 2-level VSI in low voltage system, the system is verified by developing simulation model using MATLAB/Simulink simulation package and the results are presented. The performance of shunt active filter and the proposed shunt hybrid active filter topology in reducing total harmonic distortion (THD) is compared for low voltage distribution system. Keywords: SAPF, SHPF, PI control, THD, Hysteresis current pulse width modulation, D-Q reference frame theory.
presentation of Conference On Electrical And Electronic Engineering 2015sager alswed
The designed three phase SAPF based on instantaneous p-q theory was simulated in MATLAB /SIMULINK by using different load conditions i.e. R-L load, suddenly connected R-L load, and additional unbalance R load. Its application was successfully proved and the validity achieved by minimizing the harmonics and improving PF as summarized in Table 2. Consequently, the supply current is almost pure sinusoidal. THD observed was fund to be within the prescribed limits of 5% as recommended by IEEE-519 standard.
Power Quality Improvement in 3-Φ Power System with Shunt Active filter using ...AI Publications
Research paper focuses on enhancement of the power quality, Harmonic reduction and Reactive power compensation . Power quality problems became the foremost important concern now a days. Active filters with synchronous detection methodologies are vividly employed in distribution system to be sure that the harmonics generated by non-linear loads is reduced and leads to less voltage distortion and leads to lesser power superiority problems. The three physical characteristics that mostly underline the power quality and a power quality issues are Voltage, Current and Frequency. Harmonics is defined as a disturbance demonstrated in current or voltage or frequency waveforms which result in devastation, or failure of final equipment ..This paper examines the control of Shunt Active Power Filter with Synchronous Detection Method . Simulation results using MATLAB SIMULINK demonstrates the application of these methods to the control of Active Power Filter . Moreover, this work shows that how the power quality improvement in 3 phase is done with Synchronous Detection Method .
Power System Harmonic Compensation Using Shunt Active Power FilterIJERA Editor
This paper shows the method of improving the power quality using shunt active power filter. The proposedtopic comprises of PI controller, filter hysteresis current control loop, dc link capacitor. The switching signal generation for filter is fromhysteresis current controller techniques. With the all these element shunt active power filter reduce the total harmonic distortion. Thispaper represents the simulation and analysis of the using three phase three wire system active filter to compensate harmonics .Theproposed shunt active filter model uses balanced non-linear load. This paper successfully lowers the THD within IEEE norms and satisfactorily works to compensatecurrent harmonics.
Simulation and Design of SRF based Control Algorithm for Three Phase Shunt Ac...idescitation
Active power filters are effective in mitigating line
current harmonics and compensating for the reactive power
in the line. There are basically two types of Active Power
Filters (APFs): shunt type and series type. Shunt active power
filters (SAPFs) represent the most important and most widely
used filters in industrial purposes, this is due not only to the
fact that eliminate the harmonic current but also they are
suitable for a wide range of power ratings. In this paper,
Synchronous Reference Frame (SRF) theory is employed to
calculate compensating currents while the three phase source
is feeding a highly non-linear load. The main objective is to
study and investigate the performance of Shunt active power
filter using SRF theory. The algorithm is simulated under
M ATLAB
7.8
environment
using
Simulinkand
SimPowerSystems toolbox. The results shown are within the
IEEE Standard 512-1992.
Performance enhancement of shunt active power filter with fuzzy and hysteresi...Asoka Technologies
This paper proposes fuzzy and hysteresis controllers based three phase Shunt Active Power Filter
for current harmonic compensation to improve the performance of 3ɸ supply system feeding
non- linear loads. The Shunt Active Power Filter is used to eliminate current harmonics. The dc
link control strategy is based on the fuzzy logic controller. Gating pulses for the Shunt Active
Filter is generated using Hysteresis current controller based Pulse width modulation technique.
The proposed model is simulated in MATLAB/SIMULINK. Simulation results show that the
dynamic behavior is better than the conventional Proportional- Integral (PI) controller and is
found to be more robust for changes in load.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
A study of hysteresis band current control scheme for shunt active power filt...Asoka Technologies
This paper gives an analysis of harmonic currents in power electronics equipment produced by nonlinear loads.. Shunt active power filters (APF) play a key role to reduce harmonics current generated by nonlinear loads. Impact of shunt active power filter (APF) for compensating the harmonics current has been examined and analyzed by using Hysteresis current control technique. In this paper, harmonic control strategy is applied to compensate the current harmonics in the system. A comparative study between PI, HCC, adaptive HCC for the harmonic current mitigation has been used using shunt active filter technique. Simulated results are analyzed using MATLAB
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Design of shunt active power filter to mitigate harmonicsager alswed
The designed three phase SAPF based on instantaneous p-q theory was simulated in MATLAB /SIMULINK by using different load conditions i.e. R-L load, suddenly connected R-L load, and additional unbalance R load. Its application was successfully proved and the validity achieved by minimizing the harmonics and improving PF as summarized in Table 2. Consequently, the supply current is almost pure sinusoidal. THD observed was fund to be within the prescribed limits of 5% as recommended by IEEE-519 standard.
Distribution Static Synchronous Compensator (DSTATCOM) is a shunt compensating device which is used
to improve current profile by exchanging of reactive power with unbalanced and nonlinear load. DSTATCOM is a
shunt compensating device used for power quality improvement in distribution systems. Relevant solutions are
applied for harmonics, fluctuation of voltage, voltage deviation, unbalance of three phase voltage and current and
frequency deviation. Different controlling schemes such as Phase Control Method (PCM), Fryze Power Theory
(FPT), Synchronous Reference Frame Theory (SRFT) and Instantaneous Reactive Power Theory (IRPT) are used
for reactive power compensation with the help of Voltage source Inverter (VSI). In this project we are going to
balance the source current using different control schemes. The results of different source currents are compared
with a different control schemes in terms of active and reactive power and in terms of Total Harmonic Distortion
(THD) for nonlinear load using Fryze Power Theory (FPT) and Instantaneous Reactive Power Theory (IRPT).
Reference currents are generated by the different control schemes have been dynamically traced in a hysteresis
current controller. The performance of DSTATCOM for different control schemes is validated for load balancing
and harmonic elimination by using simulation models in MATLAB/SIMULINK
Power system harmonics are a menace to electric power system with disastrous consequence. Due to the presence of non linear load, power quality of the system gets affected. To overcome this, shunt active power filter have been used near harmonic producing loads or at the point of common coupling to block current harmonics. The shunt active power filter is designed to minimize harmonics in source current and reactive power in the non linear power supplies which are creating harmonics. In this paper, Instantaneous power of p-q theory is employed to generate the reference currents and PI controller is used to control the dc link voltage. In addition to this, Artificial Intelligence (AI) technique is used to minimize the harmonics produced by nonlinear load. The main objective of this paper is to analyze and compare THD of the source current with PI controller and by artificial neural network based back propagation algorithm. The proposed system is designed with MATLAB/SIMULINK environment.
Harmonics created by nonlinear loads such as arc furnaces, cycloconverters and motor drives destroys the power quality in the system. They not only affect the working of adjacent loads but also shorten the life of power equipment by creating excessive losses. ‘Shunt Active Power Filter’ is a modern addition to family of compensating devices. It has superior qualities over its contemporaries namely SVCs and STATCOMs. It not only mitigates harmonics within the allowable limits defined by IEEE Std 519-1992, but also compensates unbalancing and reactive power in the system. Consequently, only active power is supplied by the source thus power factor approaches unity. A fully functional Simulink model of Shunt Active Power Filter has been designed based on ‘Instantaneous Power Theory’ or ‘p-q Theory’. The results of simulation comply with all the features described by the theory, justifying employment of SAPF in the industry.
Power System Harmonic Compensation Using Shunt Active Power FilterIJERA Editor
This paper shows the method of improving the power quality using shunt active power filter. The proposedtopic comprises of PI controller, filter hysteresis current control loop, dc link capacitor. The switching signal generation for filter is fromhysteresis current controller techniques. With the all these element shunt active power filter reduce the total harmonic distortion. Thispaper represents the simulation and analysis of the using three phase three wire system active filter to compensate harmonics .Theproposed shunt active filter model uses balanced non-linear load. This paper successfully lowers the THD within IEEE norms and satisfactorily works to compensatecurrent harmonics.
Simulation and Design of SRF based Control Algorithm for Three Phase Shunt Ac...idescitation
Active power filters are effective in mitigating line
current harmonics and compensating for the reactive power
in the line. There are basically two types of Active Power
Filters (APFs): shunt type and series type. Shunt active power
filters (SAPFs) represent the most important and most widely
used filters in industrial purposes, this is due not only to the
fact that eliminate the harmonic current but also they are
suitable for a wide range of power ratings. In this paper,
Synchronous Reference Frame (SRF) theory is employed to
calculate compensating currents while the three phase source
is feeding a highly non-linear load. The main objective is to
study and investigate the performance of Shunt active power
filter using SRF theory. The algorithm is simulated under
M ATLAB
7.8
environment
using
Simulinkand
SimPowerSystems toolbox. The results shown are within the
IEEE Standard 512-1992.
Performance enhancement of shunt active power filter with fuzzy and hysteresi...Asoka Technologies
This paper proposes fuzzy and hysteresis controllers based three phase Shunt Active Power Filter
for current harmonic compensation to improve the performance of 3ɸ supply system feeding
non- linear loads. The Shunt Active Power Filter is used to eliminate current harmonics. The dc
link control strategy is based on the fuzzy logic controller. Gating pulses for the Shunt Active
Filter is generated using Hysteresis current controller based Pulse width modulation technique.
The proposed model is simulated in MATLAB/SIMULINK. Simulation results show that the
dynamic behavior is better than the conventional Proportional- Integral (PI) controller and is
found to be more robust for changes in load.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
A study of hysteresis band current control scheme for shunt active power filt...Asoka Technologies
This paper gives an analysis of harmonic currents in power electronics equipment produced by nonlinear loads.. Shunt active power filters (APF) play a key role to reduce harmonics current generated by nonlinear loads. Impact of shunt active power filter (APF) for compensating the harmonics current has been examined and analyzed by using Hysteresis current control technique. In this paper, harmonic control strategy is applied to compensate the current harmonics in the system. A comparative study between PI, HCC, adaptive HCC for the harmonic current mitigation has been used using shunt active filter technique. Simulated results are analyzed using MATLAB
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Design of shunt active power filter to mitigate harmonicsager alswed
The designed three phase SAPF based on instantaneous p-q theory was simulated in MATLAB /SIMULINK by using different load conditions i.e. R-L load, suddenly connected R-L load, and additional unbalance R load. Its application was successfully proved and the validity achieved by minimizing the harmonics and improving PF as summarized in Table 2. Consequently, the supply current is almost pure sinusoidal. THD observed was fund to be within the prescribed limits of 5% as recommended by IEEE-519 standard.
Distribution Static Synchronous Compensator (DSTATCOM) is a shunt compensating device which is used
to improve current profile by exchanging of reactive power with unbalanced and nonlinear load. DSTATCOM is a
shunt compensating device used for power quality improvement in distribution systems. Relevant solutions are
applied for harmonics, fluctuation of voltage, voltage deviation, unbalance of three phase voltage and current and
frequency deviation. Different controlling schemes such as Phase Control Method (PCM), Fryze Power Theory
(FPT), Synchronous Reference Frame Theory (SRFT) and Instantaneous Reactive Power Theory (IRPT) are used
for reactive power compensation with the help of Voltage source Inverter (VSI). In this project we are going to
balance the source current using different control schemes. The results of different source currents are compared
with a different control schemes in terms of active and reactive power and in terms of Total Harmonic Distortion
(THD) for nonlinear load using Fryze Power Theory (FPT) and Instantaneous Reactive Power Theory (IRPT).
Reference currents are generated by the different control schemes have been dynamically traced in a hysteresis
current controller. The performance of DSTATCOM for different control schemes is validated for load balancing
and harmonic elimination by using simulation models in MATLAB/SIMULINK
Power system harmonics are a menace to electric power system with disastrous consequence. Due to the presence of non linear load, power quality of the system gets affected. To overcome this, shunt active power filter have been used near harmonic producing loads or at the point of common coupling to block current harmonics. The shunt active power filter is designed to minimize harmonics in source current and reactive power in the non linear power supplies which are creating harmonics. In this paper, Instantaneous power of p-q theory is employed to generate the reference currents and PI controller is used to control the dc link voltage. In addition to this, Artificial Intelligence (AI) technique is used to minimize the harmonics produced by nonlinear load. The main objective of this paper is to analyze and compare THD of the source current with PI controller and by artificial neural network based back propagation algorithm. The proposed system is designed with MATLAB/SIMULINK environment.
Harmonics created by nonlinear loads such as arc furnaces, cycloconverters and motor drives destroys the power quality in the system. They not only affect the working of adjacent loads but also shorten the life of power equipment by creating excessive losses. ‘Shunt Active Power Filter’ is a modern addition to family of compensating devices. It has superior qualities over its contemporaries namely SVCs and STATCOMs. It not only mitigates harmonics within the allowable limits defined by IEEE Std 519-1992, but also compensates unbalancing and reactive power in the system. Consequently, only active power is supplied by the source thus power factor approaches unity. A fully functional Simulink model of Shunt Active Power Filter has been designed based on ‘Instantaneous Power Theory’ or ‘p-q Theory’. The results of simulation comply with all the features described by the theory, justifying employment of SAPF in the industry.
The purpose of this project is to develop a Fully Automated Bio-diesel Production Unit, in order to fulfill the rising demand on fossil fuels and energy and the declination of the world production of traditional sources of energy but the main target is to achieve this by a sustainable technique. By "Reusing" the wasted oils we treat it chemically and have two products out of it the main product is the "Biodiesel" the secondary product is the "Glycerol".
This project can be made either on small scale to serve small needs or on larger scale for major industries. The control method will depend on the type of industry this unit will serve in.
Rural Electrification Models and Costs - Homer EnergyLeonardo ENERGY
This session is part of the Clean Energy Regulators Initiative Webinar Programme.
Theme 9 - Energy Access
Module 2: Rural Electrification Models and Costs
The economics of rural electrification has dramatically changed in the last few years. Fuel prices remain volatile and the technology has improved. In the past, the only economically viable options were grid extension and diesel generators. Now there is a wide range of renewable and hybrid options that are not only technically mature and reliable, but also cost-effective.
This webinar will use results from NREL’s HOMER® modeling software to illustrate the conditions under which different electrification models are most appropriate. In addition to diesel generators and grid extension, the webinar will discuss business models distributing individual systems, such as solar home systems and solar lanterns. The main focus will be on hybrid renewable mini-grids that can range from a few kWs to tens of MWs. It will compare the economics of solar and wind and the impact of different penetrations rates.
Hybridation des sources renouvelables mercredi 27 août 2014 E5TEIGSI La Rochelle
Afin de diminuer le pourcentage d'utilisation des énergies traditionnelles dans la consommation globale, il convient de lever les difficultés liées à l'emploi des énergies renouvelables.
L'une de ces difficultés en est l'optimisation de la combinaison de plusieurs énergies (comme par exemple le soleil, le vent, …) et l’utilisation des dispositifs de stockage pour pallier le caractère intermittent de ces énergies.
Modeling & Analysis of Shunt Active Power Filter Using IRP Theory Fed to Indu...IJERA Editor
Utility distribution networks have sensitive industrial loads and critical commercial operations suffer from various types of outages and service interruptions which can cost significant financial losses. Because of sensitivity of consumers on power quality and advancement in power electronics. Active power filter technology is the most efficient way to compensate reactive power and cancel out low order harmonics generated by nonlinear loads. The shunt active power filter was considered to be the most basic configuration for the APF. This paper reviews the basic principle of shunt active power filter, along with the current tracking circuit based on the instantaneous reactive power theory and the main circuit performing as an inverter with PWM hysteresis control. The instantaneous active and reactive current component (id-iq) method and instantaneous active and reactive power (p-q) method are two control strategies which are extensively used in active filters. A shunt active filter based on the instantaneous active and reactive current component (id-iq) method is proposed. This method aims to compensate harmonic and first harmonic unbalance. A Comprehensive control method is analyzed and a harmonic Compensation simulation is conducted, the result of which verifies The harmonic detection algorithm is well-proposed and the power Quality of the grid is overall-enhanced. The results are obtained using MATLAB/SIMULINK software.
Mitigation of the Harmonics under Reactive Power Compensation by SHPF-TCR Usi...IJERA Editor
In this paper, a combined system of a thyristor-controlled reactor (TCR) and a shunt hybrid power filter
(SHPF)has been designed by MATLAB/SIMULINK approach for harmonic and reactive power compensation.
The quality of the power is effected by many factors like harmonic contamination, due to the increment of nonlinear
loads, sag and swell due to the switching of the loads etc. Also control schemes based on PI and Fuzzy
logic controllers have been proposed to mitigate the harmonics and neutral current . The proposed methodology
not only reduces the complexity but also offers simplicity to implement and increases reliability of the system.
These control strategies also help in achieving a low cost highly effective control. The performance is also
observed under influence of utility side disturbances such as harmonics, flicker and spikes with Non-Linear and
Reactive Loads with different control strategies.
This paper proposes an Active Power Filter (APF) system which utilizes a five-level nonconventional Cross-Connected Source Multilevel Inverter (CCSMI) with a modified Unified Constant-Frequency Integration (UCI) control. The CCSMI consists of six power switches which can produce five output voltage levels. With the use of the CCSMI, the parts count is reduced with equivalent or better performance compared to the use of conventional multilevel inverters. The capability of the proposed system is tested using three types of nonlinear loads with different characteristics. The APF system is simulated under steady-state condition using MATLAB/Simulink. The results obtained show improvement in the supply current Total Harmonic Distortion (THD) with room for enhancement, using the proposed APF system.
Power Quality Improvement Fuzzy Logical Controlled Based on Cascaded Shunt Ac...IJMTST Journal
Improve its quality and reliability catches growing interest. In this paper, based on the analysis and
modeling of the shunt APF with close-loop control, a feed forward compensation path of load current and also
fuzzy logic control is applied to improve the dynamic performance of the APF.. The two H-bridge cascaded
inverter is used for the aeronautical APF (AAPF). Justifications for topology choosing and corresponding
system control method are given. Furthermore, the global framework and operation principle of the proposed
AAPF are presented in detail. Simulated waveforms in different load conditions indicate the good
performance of the AAPF.
Advanced Techniques in Harmonic Suppression via Active Power Filter: A ReviewIJPEDS-IAES
This paper intends to present the recent development of artificial intelligence
(AI) applications in active power filter (APF). As a result of the development
in power electronic technology, (APF) continues to attract ample attention.
Compared with the traditional reactive LC filter, active power filter is
considered to be more effective in compensating harmonic current generated
by nonlinear loads. APF, can correct the power quality and improve the
reliability and stability on power utility. A brief explanation of some
important areas in AI and a comprehensive survey of the literature along the
main categories of AI is presented to introduce the readers into the wideranging
topics that AI encompasses. Plenty of relevant literatures have been
selected in the review, mostly emphasized on better accuracy, robustness,
efficiency, stability and tracking ability of the system.
International Journal of Engineering Research and DevelopmentIJERD Editor
Electrical, Electronics and Computer Engineering,
Information Engineering and Technology,
Mechanical, Industrial and Manufacturing Engineering,
Automation and Mechatronics Engineering,
Material and Chemical Engineering,
Civil and Architecture Engineering,
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International Journal of Engineering Research and Development (IJERD)IJERD Editor
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A New Topology for Power Quality Improvement using 3-Phase 4-Wire UPQC with R...IJMTST Journal
This paper introduces a new concept of optimal utilization of a Unified power quality conditioner (UPQC).
The series inverter of UPQC is controlled to perform simultaneous Methods: voltage sag/swell compensation
and load reactive power sharing with the shunt inverter. The active power control approach is used to
compensate voltage sag/swell and is integrated with theory of power angle control (PAC) of UPQC to
coordinate the load reactive power between the two inverters. MATLAB/SIMULINK-based simulation results
are discussed to support the developed concept. Finally, the proposed UPQC concept is validated.
International Journal of Engineering Research and Development (IJERD)IJERD Editor
We would send hard copy of Journal by speed post to the address of correspondence author after online publication of paper.
We will dispatched hard copy to the author within 7 days of date of publication
A Shunt Active Power Filter for 12 Pulse Converter Using Source Current Detec...IAES-IJPEDS
A shunt Active Power Filter (APF) with current detection at the source side
is considered as a closed-loop system from the view of the whole power
distribution system, which is expected with better harmonics filtering
performance compared with conventional current detection methods such as
load current detection and open loop control. This paper introduces an
efficient source current detection method (direct) control scheme to mitigate
the grid current harmonics generated by the twelve pulse converter. The
proposed system uses Control Rectifier (12 –pulse converter) which
efficiently regulates the DC voltage by varying the angle of each 6 pulse
converter. Moreover, the proposed system uses three winding transformer
which eliminates the harmonics during equal angles switching at each six
pulse converter which in turn simplifies the operation of the SAPF. The
proposed system is simulated in MATLAB SIMULINK to evaluate the
performance of the proposed system.
In This paper we present experimental comparative study of feedBack Linearized and Proportional Integral (PI) Controller of the DC bus voltage of three phase shunt Active Power Filter (APF). The FeedBack Linearized and PI controllers are introduced to improve tracking performance characteristics, power quality and minimized consumption of the reactive power. The algorithm used to identify the reference currents is based on the Self Tuning Filter (STF). The firing pulses of the IGBTs inverter are generated using a hysteresis current controller; which is implemented on an analogue card. Finally, the above study, under steady state and transient conditions, is illustrated with signal-flow graphs and corresponding analysis. This study was verified by experimental tests on hardware prototype based on dSPACE-1104. The experimental results show the feasibility and the effectiveness of the designed active filter, associated with Feedback Linearized and PI controllers and are capability in meeting the IEEE 519-1992 recommended harmonic standard limits.
Closed Loop Non Linear Control of Shunt Hybrid Power Filter for Harmonics Mit...IAES-IJPEDS
In recent years, the amount of non-linear loads has increased considerably since there were improvements in power electronic equipment (such as adjustable speed drives or converter ac-dc, ac-ac, dc-ac and dc-dc) in industrial sectors which cause deterioration of the quality of the electric power supply through distortion of supply voltage and supply current. This has led to improvement of many stringent needs regarding generation of harmonic current, which are found in IEEE519 and IEC61000 standards. This paper proposes a non-linear function based closed loop control strategy (without load current extraction) for three-phase Shunt Active Power Line Conditioner and LC passive filter to compensate harmonics, power factor improvement and enhance the dynamic performance of Shunt Hybrid Power Filter (SHPF). By using a PI controller the DC bus voltage of the Shunt Active Power Filter is maintained constant. Results obtained from simulation shows the performance of expected hybrid filter in transient and steady state operation . This indicates that the controller is able to compensate even under severe load current imbalances.
PI and fuzzy logic controllers for shunt active power filterISA Interchange
This paper presents a shunt Active Power Filter (APF) for power quality improvements in terms of harmonics and reactive power compensation in the distribution network. The compensation process is based only on source current extraction that reduces the number of sensors as well as its complexity. A Proportional Integral (PI) or Fuzzy Logic Controller (FLC) is used to extract the required reference current from the distorted line-current, and this controls the DC-side capacitor voltage of the inverter. The shunt APF is implemented with PWM-current controlled Voltage Source Inverter (VSI) and the switching patterns are generated through a novel Adaptive-Fuzzy Hysteresis Current Controller (A-F-HCC). The proposed adaptive-fuzzy-HCC is compared with fixed-HCC and adaptive-HCC techniques and the superior features of this novel approach are established. The FLC based shunt APF system is validated through extensive simulation for diode-rectifier/R–L loads.
The development of active power filter (APF) using rectifier boost technique has been identified to compensate for the pulsating nature of the distorted supply current waveform of non-linear load. In this work, investigation is carried out on the operation of rectifier without any filters function. This is then extended to operate the rectifier converter with an active power filter function. APF function is implemented by enabling the closed-loop control using standard proportional integral control to rectify the distorted supply current to become continuous, sinusoidal and in-phase with the supply voltage waveform. Consequently, the total harmonic distortion (THD) level was reduced to meet the acceptable limit defined in the standard of IEEE-519 1992. The selected simulation results obtained from MATLAB/Simulink are presented to justify the proposed filter structure.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
1. Selective Harmonic Current Mitigation
with a Shunt Active Power Filter
Project C0014-2014-03 247099 Institutional Links CONACYT-British
Council
Universidad Michoacana de San Nicolás de Hidalgo
Meeting April 6, 2016
División de Estudios de Posgrado de la
Facultad de Ingeniería Eléctrica
3. 1. MOTIVACIÓN
• In electric power systems are switched system
introducing harmonic line mainly due to the
switching elements.
•Harmonics generated from nonlinear loads, such
as switch mode power converters and adjustable
speed drives, as well as other unbalanced loads in
distribution networks deteriorate power quality in
power transmission and distribution systems.
•Nonlinear loads increase losses and produce
harmonic distortion in the grid.
4. •This harmonic distortion can be mitigated using
passive filters.
•Thus, passive filters cannot always provide a
complete compensation solution.
•As an alternative, different active filter solutions
have been continuously analyzed in recent years. A
conventional (APF) is typically composed of three
single phase inverters and pulse width modulation
(PWM) and can be connected to the load either in
parallel or in series
INTRODUCTION
5. Algorithm Harmonic Detection Method
Frequency-domain Discrete Fourier Transform (DFT)
Fast Fourier Transform (FFT)
Recursive Discrete Fourier Transform
Time-domain Synchronous harmonic dq-frame
Band pass filters
Instantaneous power “pq theory”
Generalized integrators
Other Prediction algorithms, Prony analysis
Kalman filters
Nueral networks and adaptive control
Wavelets Transform
Classification of the most used harmonic
detection methods in APF’s
19. Illustrates the current to be injected by the
active filter. It may be noted that has a
high harmonic content, can be impractical
in some systems
20. Extraction of the fundamental component for the APF
Results of the contribution of injection of the fundamental component
current in the three-phase system
21. Harmonic spectrum for selective compensation the
fifth harmonic
Selective compensation of fundamental component
and fifth harmonic
23. Conclusion
s•The simulation was conducted based
on a three-phase circuit with linear and
nonlinear unbalanced loads.
•Using the proposed SAPF resulted in a
reduction of the original THD from 16.25%
to 3.39% or nearly five times less.
•The effectiveness of the proposed
SHCM system makes it a practical
solution for a variety of industrial
applications with need harmonic current
mitigation.