This document discusses the real-time hardware implementation of power converters for grid integration of distributed generation and STATCOM systems. It summarizes the author's defense, which includes simulating and testing a STATCOM model at 50V using conventional control, direct current vector control, and neural network control. It then discusses simulating and testing the models at higher voltages of 200kV. The author proposes proceeding with hardware experiments using dSPACE and OPAL-RT systems to test the different control methods. The document provides details on the simulation models, hardware setup, control strategies, and results.
Comparative Analysis of Linear Controllers used for Grid Connected PV System IJECEIAES
Requirement for electrical energy is increasing in a ramp function manner. To meet the steady increasing in energy demand it is required to find some alternate source of energy. Except the conventional source of energy one type of renewable energy i.e PV may be regarded as a clean source of energy to meet the energy demand. PV modules generating DC power cannot be directly connected to the electrical infrastructure as most of the grid infrastructure uses either 230volt or 120 volt. Therefore power electronic device most be connected (inverter) between PV and grid. In order to make a competitive market between the renewable generated power and conventional way of generating the power it is required to design a cost effective inverter, qualitative output which is pure sinusoidal and harmonics free. In this paper a comparative analysis among the various linear controllers are presented. Proposed Optimised PID Controller is Presented through MATLAB Simulink based environment.
An Experimental Study of the Unbalance Compensation by Voltage Source Inverte...IJPEDS-IAES
This work presents an experimental study of the unbalance compensation
caused by the high speed railway substations in the high-voltage power grid
with a shunt voltage source inverter based STATCOM. This experimental
study is realized on a reduced scale prototype. The Control of inverter is
implemented in a DSP card. The practical results presented in this paper are
shown the performance of unbalance compensation by VSI_STATCOM in
static and dynamic regime.
International Journal of Engineering Research and Applications (IJERA) aims to cover the latest outstanding developments in the field of all Engineering Technologies & science.
International Journal of Engineering Research and Applications (IJERA) is a team of researchers not publication services or private publications running the journals for monetary benefits, we are association of scientists and academia who focus only on supporting authors who want to publish their work. The articles published in our journal can be accessed online, all the articles will be archived for real time access.
Our journal system primarily aims to bring out the research talent and the works done by sciaentists, academia, engineers, practitioners, scholars, post graduate students of engineering and science. This journal aims to cover the scientific research in a broader sense and not publishing a niche area of research facilitating researchers from various verticals to publish their papers. It is also aimed to provide a platform for the researchers to publish in a shorter of time, enabling them to continue further All articles published are freely available to scientific researchers in the Government agencies,educators and the general public. We are taking serious efforts to promote our journal across the globe in various ways, we are sure that our journal will act as a scientific platform for all researchers to publish their works online.
Total Harmonic Distortion Analysis of Multilevel Inverter Fed To Induction Mo...IJERA Editor
This paper presents the control of a multilevel inverter supplied by a Photovoltaic (PV) panel and a batteries
bank. It is well known that the power quality of multilevel inverter signals depends on their number of levels.
However, the question that arises is whether there is a limit beyond which it is not necessary to increase the
number of level. This question is addressed in this paper. Three, nine and fifteen-level converters are studied.
The harmonics content of the output signals are analyzed. A simplified Pulse Width Modulation (SPWM)
method for a multilevel inverter that supplied an induction motor is developed. The controller equations are such
that the SPWM pulses are generated automatically for any number of levels. The effectiveness of the propose
method is evaluated in simulation. Matlab®/ Simulink is used to implement the control algorithm and simulate
the system.
GRID SIDE CONVERTER CONTROL IN DFIG BASED WIND SYSTEM USING ENHANCED HYSTERES...ecij
The standard grid codes suggested, that the wind generators should stay in connected and reliable active and reactive power should be provided during uncertainties. This paper presents an independent control of Grid Side Converter (GSC) for a doubly fed induction generator (DFIG). A novel GSC controller has been designed by incorporating a new Enhanced hysteresis comparator (EHC) that utilizes the hysteresis band to produce the suitable switching signal to the GSC to get enhanced controllability during grid unbalance. The EHC produces higher duty-ratio linearity and larger fundamental GSC currents with
lesser harmonics. Thus achieve fast transient response for GSC. All these features are confirmed through time domain simulation on a 15 KW DFIG Wind Energy Conversion System (WECS).
Comparative Analysis of Linear Controllers used for Grid Connected PV System IJECEIAES
Requirement for electrical energy is increasing in a ramp function manner. To meet the steady increasing in energy demand it is required to find some alternate source of energy. Except the conventional source of energy one type of renewable energy i.e PV may be regarded as a clean source of energy to meet the energy demand. PV modules generating DC power cannot be directly connected to the electrical infrastructure as most of the grid infrastructure uses either 230volt or 120 volt. Therefore power electronic device most be connected (inverter) between PV and grid. In order to make a competitive market between the renewable generated power and conventional way of generating the power it is required to design a cost effective inverter, qualitative output which is pure sinusoidal and harmonics free. In this paper a comparative analysis among the various linear controllers are presented. Proposed Optimised PID Controller is Presented through MATLAB Simulink based environment.
An Experimental Study of the Unbalance Compensation by Voltage Source Inverte...IJPEDS-IAES
This work presents an experimental study of the unbalance compensation
caused by the high speed railway substations in the high-voltage power grid
with a shunt voltage source inverter based STATCOM. This experimental
study is realized on a reduced scale prototype. The Control of inverter is
implemented in a DSP card. The practical results presented in this paper are
shown the performance of unbalance compensation by VSI_STATCOM in
static and dynamic regime.
International Journal of Engineering Research and Applications (IJERA) aims to cover the latest outstanding developments in the field of all Engineering Technologies & science.
International Journal of Engineering Research and Applications (IJERA) is a team of researchers not publication services or private publications running the journals for monetary benefits, we are association of scientists and academia who focus only on supporting authors who want to publish their work. The articles published in our journal can be accessed online, all the articles will be archived for real time access.
Our journal system primarily aims to bring out the research talent and the works done by sciaentists, academia, engineers, practitioners, scholars, post graduate students of engineering and science. This journal aims to cover the scientific research in a broader sense and not publishing a niche area of research facilitating researchers from various verticals to publish their papers. It is also aimed to provide a platform for the researchers to publish in a shorter of time, enabling them to continue further All articles published are freely available to scientific researchers in the Government agencies,educators and the general public. We are taking serious efforts to promote our journal across the globe in various ways, we are sure that our journal will act as a scientific platform for all researchers to publish their works online.
Total Harmonic Distortion Analysis of Multilevel Inverter Fed To Induction Mo...IJERA Editor
This paper presents the control of a multilevel inverter supplied by a Photovoltaic (PV) panel and a batteries
bank. It is well known that the power quality of multilevel inverter signals depends on their number of levels.
However, the question that arises is whether there is a limit beyond which it is not necessary to increase the
number of level. This question is addressed in this paper. Three, nine and fifteen-level converters are studied.
The harmonics content of the output signals are analyzed. A simplified Pulse Width Modulation (SPWM)
method for a multilevel inverter that supplied an induction motor is developed. The controller equations are such
that the SPWM pulses are generated automatically for any number of levels. The effectiveness of the propose
method is evaluated in simulation. Matlab®/ Simulink is used to implement the control algorithm and simulate
the system.
GRID SIDE CONVERTER CONTROL IN DFIG BASED WIND SYSTEM USING ENHANCED HYSTERES...ecij
The standard grid codes suggested, that the wind generators should stay in connected and reliable active and reactive power should be provided during uncertainties. This paper presents an independent control of Grid Side Converter (GSC) for a doubly fed induction generator (DFIG). A novel GSC controller has been designed by incorporating a new Enhanced hysteresis comparator (EHC) that utilizes the hysteresis band to produce the suitable switching signal to the GSC to get enhanced controllability during grid unbalance. The EHC produces higher duty-ratio linearity and larger fundamental GSC currents with
lesser harmonics. Thus achieve fast transient response for GSC. All these features are confirmed through time domain simulation on a 15 KW DFIG Wind Energy Conversion System (WECS).
Power Electronics and Switch Mode Power SupplyLiving Online
Power electronic circuits have revolutionised almost every device that we use today from PC's to TV's, microwave ovens and heavy industrial drives.
Switch Mode Power Supplies (SMPS) have thus become an important part of equipment design in all types of industrial equipment and an understanding of the different types and designs has become essential for reliable operation of complex equipment.
This workshop gives you a fundamental understanding of the basic components that form a SMPS design. You will understand how the selection of components affects the different performance parameters and operation of the SMPS. Typical practical applications of the SMPSs in industry will be discussed.
The concluding section of the workshop gives you the fundamental tools in troubleshooting SMPS designs confidently and effectively.
Even though the focus of the workshop is on the direct application of this technology, you will also gain a thorough understanding of the problems that can be introduced by SMPSs such as harmonics, electrostatic discharge and EMC/EMI problems.
WHO SHOULD ATTEND?
Anyone associated with the use of power electronics and switch mode power supply design techniques in the industrial or automation environment. The workshop will also benefit those working in system design as well as site commissioning, maintenance and troubleshooting.
Typical personnel who would benefit are:
Application engineers
Component suppliers
Electrical and electronic maintenance
Instrument for control engineers
Product designers
Product managers
Sales engineers
Service technicians
Supervisors
Technicians
MORE INFORMATION: http://www.idc-online.com/content/power-electronics-and-switch-mode-power-supply-38
IC555 Timer, Monostable and Astable modes of operation; voltage regulators - fixed voltage regulators, adjustable voltage regulators - switching regulators.
Linear Integrated Circuits and Its Applications Unit-V Special ICsSatheeshCS2
Linear Integrated Circuits and Its Applications
Unit-V Special ICs
Mr. C.S.SATHEESH, M.E.(Control Systems),
Assistant Professor, Department of EEE, Muthayammal Engineering College, (Autonomous) Namakkal (Dt), Rasipuram – 637408
A Novel Single-Phase AC-AC Converter for Circuit Breaker Testing Appli...ANU143SRA
This Project a novel single-phase ac-ac converter with power factor correction and output current control for circuit-breaker testing according to the IEC 60898 standard. The important advantages of the proposed circuit are low component count and fast responses for the standard requirement, especially a current step at the beginning of the test. The proposed single-phase ac-ac converter can operate in either buck or boost mode to accommodate the need for a wide range of output current while satisfying the ramping and step current requirements in the standard. The control circuits consist of two parts, dc voltage control of dc-link capacitors and ac output current controls operating simultaneously. The proposed circuit is verified through both computer simulation and hardware experiment. An example of a 50A circuit breaker testing according to the IEC 60898 is demonstrated in the project.
Analysis and hardware implementation of five level cascaded H Bridge inverterIJERA Editor
The cascaded multilevel inverter (CMLI) has gained much attention in recent years due to its advantages in high
voltage and high power with low harmonics applications. A standard cascaded multilevel inverter requires n DC
sources for 2n+1levels at the output, where n is the number of inverter stages. This paper presents a topology to
control cascaded multilevel inverter that is implemented with multiple DC sources to get 2"+1_ 1 levels. Without
using Pulse Width Modulation (PWM) technique, the firing circuit can be implemented using Microcontroller
which greatly reduces the Total Harmonic Distortion (THD) and switching losses. To develop the model of a
cascaded hybrid multilevel inverter, a simulation is done based on MATLAB/SIMULINK software and
hardware implementation was also done. Their integration makes the design and analysis of a hybrid multilevel
inverter more complete and detailed.
Single Phase Thirteen Level Inverter using BI Directional Switches and reduce...Editor IJMTER
Renewable energies have advantages of zero fuel cost and reduced environmental
impacts. This paper proposes an Asymmetrical Thirteen level H-Bridge inverter circuit. Two inputs
from solar PV panels are given to the converter and maximum power is extracted by using maximum
power point tracking method. Integrated converter is DC to DC Boost converter. The output is given
to H- inverter which converts dc to ac and the thirteen level output voltage is applied to the load.
Operational analysis and simulation results are given for the proposed circuit.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Joshua Letourneau of LG & Associates presents a gameplan for establishing a Strategic Sourcing Framework at your organization. As always, the endgame is hiring more great-fit talent in less time for less cost than your competition, not to mention retaining them longer while achieving peak engagement.
Power Electronics and Switch Mode Power SupplyLiving Online
Power electronic circuits have revolutionised almost every device that we use today from PC's to TV's, microwave ovens and heavy industrial drives.
Switch Mode Power Supplies (SMPS) have thus become an important part of equipment design in all types of industrial equipment and an understanding of the different types and designs has become essential for reliable operation of complex equipment.
This workshop gives you a fundamental understanding of the basic components that form a SMPS design. You will understand how the selection of components affects the different performance parameters and operation of the SMPS. Typical practical applications of the SMPSs in industry will be discussed.
The concluding section of the workshop gives you the fundamental tools in troubleshooting SMPS designs confidently and effectively.
Even though the focus of the workshop is on the direct application of this technology, you will also gain a thorough understanding of the problems that can be introduced by SMPSs such as harmonics, electrostatic discharge and EMC/EMI problems.
WHO SHOULD ATTEND?
Anyone associated with the use of power electronics and switch mode power supply design techniques in the industrial or automation environment. The workshop will also benefit those working in system design as well as site commissioning, maintenance and troubleshooting.
Typical personnel who would benefit are:
Application engineers
Component suppliers
Electrical and electronic maintenance
Instrument for control engineers
Product designers
Product managers
Sales engineers
Service technicians
Supervisors
Technicians
MORE INFORMATION: http://www.idc-online.com/content/power-electronics-and-switch-mode-power-supply-38
IC555 Timer, Monostable and Astable modes of operation; voltage regulators - fixed voltage regulators, adjustable voltage regulators - switching regulators.
Linear Integrated Circuits and Its Applications Unit-V Special ICsSatheeshCS2
Linear Integrated Circuits and Its Applications
Unit-V Special ICs
Mr. C.S.SATHEESH, M.E.(Control Systems),
Assistant Professor, Department of EEE, Muthayammal Engineering College, (Autonomous) Namakkal (Dt), Rasipuram – 637408
A Novel Single-Phase AC-AC Converter for Circuit Breaker Testing Appli...ANU143SRA
This Project a novel single-phase ac-ac converter with power factor correction and output current control for circuit-breaker testing according to the IEC 60898 standard. The important advantages of the proposed circuit are low component count and fast responses for the standard requirement, especially a current step at the beginning of the test. The proposed single-phase ac-ac converter can operate in either buck or boost mode to accommodate the need for a wide range of output current while satisfying the ramping and step current requirements in the standard. The control circuits consist of two parts, dc voltage control of dc-link capacitors and ac output current controls operating simultaneously. The proposed circuit is verified through both computer simulation and hardware experiment. An example of a 50A circuit breaker testing according to the IEC 60898 is demonstrated in the project.
Analysis and hardware implementation of five level cascaded H Bridge inverterIJERA Editor
The cascaded multilevel inverter (CMLI) has gained much attention in recent years due to its advantages in high
voltage and high power with low harmonics applications. A standard cascaded multilevel inverter requires n DC
sources for 2n+1levels at the output, where n is the number of inverter stages. This paper presents a topology to
control cascaded multilevel inverter that is implemented with multiple DC sources to get 2"+1_ 1 levels. Without
using Pulse Width Modulation (PWM) technique, the firing circuit can be implemented using Microcontroller
which greatly reduces the Total Harmonic Distortion (THD) and switching losses. To develop the model of a
cascaded hybrid multilevel inverter, a simulation is done based on MATLAB/SIMULINK software and
hardware implementation was also done. Their integration makes the design and analysis of a hybrid multilevel
inverter more complete and detailed.
Single Phase Thirteen Level Inverter using BI Directional Switches and reduce...Editor IJMTER
Renewable energies have advantages of zero fuel cost and reduced environmental
impacts. This paper proposes an Asymmetrical Thirteen level H-Bridge inverter circuit. Two inputs
from solar PV panels are given to the converter and maximum power is extracted by using maximum
power point tracking method. Integrated converter is DC to DC Boost converter. The output is given
to H- inverter which converts dc to ac and the thirteen level output voltage is applied to the load.
Operational analysis and simulation results are given for the proposed circuit.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Joshua Letourneau of LG & Associates presents a gameplan for establishing a Strategic Sourcing Framework at your organization. As always, the endgame is hiring more great-fit talent in less time for less cost than your competition, not to mention retaining them longer while achieving peak engagement.
VSC BASED HVDC SYTEM DESIGN AND PROTECTION AGAINST OVER VOLTAGESIJERD Editor
High Voltage Direct Current system based on voltage source converter (VSC-HVDC) is becoming
more effective solution for offshore wind plants and supplying power to remote regions. In this paper, the
control of a VSC-based HVDC system (VSC-HVDC) is described. Based on this control strategy, appropriate
controllers utilizing PI controllers are designed to control the active and reactive power at each end station.The
operation performance of a voltage source converter (VSC) based HVDC (VSC-HVDC system) system is
explained under some characteristic faulted conditions with and without protection measures. A protection
strategy is proposed to enhance the continuous operation performance of the VSC-HVDC system. The strategy
utilizes a voltage chopper to suppress over-voltages on the DC side of the VSC. Digital simulation is done to
verify the validity of the proposed control strategy and protection strategy
Performance and High Robustness DPC for PWM Rectifier under Unstable VDC BusIJPEDS-IAES
This paper proposes a strategy de controlling a static AC / DC converter
based on direct power control (DPC). The instantaneous active and reactive
power is controlled in such a way to ensure the PWM rectifier with a
sinusoidal current absorption. This control has proven effective in terms of
reduction of total harmonic distortion (THD) of current absorbed. Offers a
good control of active and reactive power with an operation at unitary power
factor. The test of robustness carried out and the results have proven DPC
good performance with strong possibility of de integrate it into the field of
high voltage and high power as electric traction.
Sliding Mode Control of Three Levels Back-To-Back VSC- HVDC System Using Spac...IJPEDS-IAES
In this study, a sliding mode strategy proposed to control a three levels Back- to-Back High Voltage Direct Current (HVDC) system based on the three- level voltage source converter (VSC). The voltage-balancing control of two split DC capacitors of the VSC-HVDC system is achieved using three-level space vector modulation with balancing strategy based on the effective use of the redundant switching states of the inverter voltage vectors. Finally, a complete simulation of the VSC-HVDC system validates the efficiency of the proposed strategy law. Compared to the conventional control, Sliding Mode Control scheme for the VSC-HVDC system shows the attractive advantages such as offering high tracking accuracy, fast dynamic response and good robustness.
The Green Energy sources (solar, wind) are performing a vigorous role to reach the electrical power demand. Due to the presence of non-linear loads, reactive loads in the distribution system and the injection of wind power into the grid integrated system results power quality issues like current harmonics, voltage fluctuations, reactive power demand etc. This paper mainly investigates the designing and satisfactory performance evaluation of solar farm as PV-STATCOM (Static Synchronous Compensator) for enhancement of power quality in grid tie system by using MATLAB environment (Simulink). The proportional and integral (PI) Controller and Hysteresis Current Controller (HCC) were effectively utilized to inject the desired current from voltage source converter (VSC) based PV-STATCOM at PCC for the mitigation of quality related problems in the proposed test system.
This paper presents an analysis of virtual-flux direct power control (VFDPC) technique for the three-phase pulse width modulation (PWM) ac-dc converter. The proposed VFDPC is developed by assuming the grid voltage and converter line filters quantities are related to a virtual three-phase ac motor. The controller works with less number of sensors by eliminating the voltage sensors used for measuring the three-phase grid voltage. The grid virtual flux which is proportional to the grid voltage will be estimated from the information of converter switching states, line current, and dc-link output voltage. Several analyses are performed in order to study the steady state and dynamic performance of the converter, particularly during the load and DC voltage output reference variations. The proportional integral (PI) controller at the outer voltage control loop of VFDPC is tuned properly and the entire PWM ac-dc converter system is simulated using MATLAB/Simulink to ensure the dc output voltage follow the desired output voltage under steady state and dynamic conditions. Ac-dc converter utilizing the proposed VFDPC is able to generate three-phase input current waveforms that are almost sinusoidal with low harmonics contents which is less than 5% and near unity power factor (pf) operation.
Simulation of D-STATCOM to study Voltage Stability in Distribution systemijsrd.com
This paper presents the simulation of D-statcom to understand the improvement of voltage stability [1] of distribution system. The power circuits of the D-STATCOM and distribution networks are made up of simpower system blocks, while the control circuits made with the simulink blocks The STATCOM is applied to regulate transmission voltage to allow greater power flow in a voltage limited transmission network, in the same manner as a static var compensator (SVC), the STATCOM has further potential by giving an inherently faster response and greater output to a system with depressed voltage and offers improved quality of supply. The main applications of the STATCOM are; Distribution STATCOM (D-STATCOM) exhibits high speed control of reactive power to provide voltage stabilization and other type of system control. The DSTATCOM protects the utility transmission or distribution system from voltage sag and /or flicker caused by rapidly varying reactive current demand. During the transient conditions the D-STATCOM provides leading or lagging reactive power to active system stability, power factor correction and load balancing.
This paper introduces the modelling of a novel three phase AC-AC converter with indirect use of a capacitor as DC voltage link. The proposed converter has high efficiency because it uses Space Vector PWM (SVPWM) technique at both rectificier and inverter stages to operate the pulse width modulation in IGBT switches. The novel converter is equipped with a power factor control to shape the rectifier input current waveform to be sinusoidal and to be in phase with the input voltage. To keep the DC voltage stable, the converter utilizes PI controllers. Simulations are conducted for output voltage from 120 to 300 Volts with output frequency ranging from 30 Hz to 60 Hz. The simulation results show that the converter is able to maintain stable the DC voltage and current. Furthermore, the model demonstrates the benefits of proposed converter in terms of acquiring high input power factor and sinusoidal current waveform at the output side of the inverter.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Improvement in Power Transmission Capacity by Simultaneous AC-DC Transmissiontheijes
Now days in power transmission systems mainly the high voltage three phase AC or HVDC transmission lines for greater efficiency at very long distances are used. In this paper, we have to show the scheme of AC and DC power transmission system which can be developed by converting double circuit ac line into composite AC and DC power transmission line and also comparing simulation results with the simple EHVAC transmission system and HVDC transmission system having six pulses PWM generator. The main object of thesis is to show that by superimposing DC in AC transmission, the capacity of the transmission line can be increased by nearly 70 % of that if only AC is transmitted. In our existing transmission system, long extra high voltage (EHV) AC lines cannot be loaded to their thermal limits in order to keep sufficient margin against transient instability. With the scheme proposed in this project, it is possible to load these lines close to their thermal limits. The conductors are allowed to carry usual ac along with dc superimposed on it, without altering the original line conductors, tower structures, and insulator strings has been presented.
GRID INTEGRATION OF DISTRIBUTED GENERATION AND STATCOM SYSTEMS
1. REAL TIME HARDWARE IMPLEMENTATION OF POWER
CONVERTERS FOR GRID INTEGRATION OF DISTRIBUTED
GENERATION AND STATCOM SYSTEMS
Ishan JaithwaDr Shuhui Li || Dr Tim Haskew || Dr Rachel Fraizer
RANGE Electric
2. MY DEFENCE
• Simulation of STATCOM model for 50V using
Conventional Control
Direct Current Vector Control
Neural Network Control
• Hardware verification of STATCOM / AC/DC/AC CONVERTER AND
FILTER model for 50V using d SPACE and OPALRT systems
Conventional Control
Direct Current Vector Control
Neural Network Control
SIMULATION
HARDWARE
3. SIMULATION
CONVENTIONAL
CONTROL (50V)
DCC (50V)
NEURAL
NETWORK
CONTROL (50V)
DCC (200 kV)
NEURAL
NETWORK
(200kV)
HOW I PROCEED
HARDWARE
EXPERIMENT
D SPACE
Conventional
Direct vector
Control
Neural Network
Control
OPAL RT
Conventional
Open Loop Test
Direct vector
Control
Neural Network
Control
4. STATCOM
A STATic COMpensator compensates reactive power and provide voltage
support to an ac system. A traditional STATCOM consists of
• Energy storage device
• AC power system
• Voltage source converter (VSC), and a
• Control system
13. 3/2
3/2
PWM
Voltage
angle
calculation
2/3
PI
, ,a b cv
, ,a b ci
,v
,i
e
dv
*
1dv
*
1qv
*
1v
*
1v
*
1, 1, 1a b cv
dv
qv
*
di
*
qi
*
dcV
dcV
di
qi
R
L
pR
C
dcV
L
PI
PI
L
ej
e
ej
e
ej
e
PI
*
busV
Bus Voltage
Magnitude
Calculation
busV
*
qi
Fast inner Current Loop: Id, Iq
Slow Outer Voltage Loop:
Vdc, bus Voltage, Reactive power
14. 3/2
3/2
2/3
di
di
qi
, ,a b cv
, ,a b ci
R
L
pR
C
dcV
PWM
Voltage
angle
calculation
,v
e
dv
,i
*
1, 1, 1a b cv*
1v
*
1v
*
1dv
*
1qv
R
R
PI
PI
PI
dcV
qi
L
L
*
dcV
*
qi
*
di
ej
e
ej
e
ej
e
PI
*
busV
busV
*
qi
Bus Voltage
Magnitude
Calculation
• d-axis current for active or dc capacitor voltage control
• q-axis current for reactive power or grid voltage support control
real power or
dc link voltage
control
reactive
power control
15. • Randomly generating a sample initial state idq(j)
• Randomly generating a sample reference dq current
• Training the action network based on the optimization principle
• Repeating the process until a stop criterion is reached.
34. Component Parameter Value
The grid
Line voltage and
current
120/208V – 5A
Frequency 60Hz
120/208V
transmission
Line cable
connection
Inductance/phase
0.7Ω, 25mH – 25A
dc max
Parallel
Resistance/phase
170 Ω
Component Parameter Value
VSC converter
Dc bus 420V – 10A
power 24V, 0.16A 50/60Hz
Switching Control 0/5V, 0-20KHz
Grid-filter
Resistance 0.6 Ω
Inductance 25mH
Capacitor
Resistance Rp 700 Ω
Capacitance 16000 µF
Reference voltage 50V
Approach Controller Gain (kp / ki)
Conventional
Current loop 0.895 / 53.073
dc voltage 0.049 / 0.07
DCC
Current loop 1.363 / 44.49
dc voltage 0.08 / 105
Neural
Current loop 0.6815 / 22.245
Dc voltage 0.008 / 105
Parameters of D-STATCOM controllerNetwork data
Parameters of individual STATCOM components
Grid Voltage
PARAMETERS
66. Kenneth
J Polk
Lynette
Horton
Ishan Jaithwa
•Electrical Engineering, MS, University of Alabama
Joshua Stoddard
•Mechanical Engineering and STEM path to the MBA,
Student at the University of Alabama
Xingang Fu
Electrical Engineering, Phd, University of Alabama
Dr Shuhui Li -INVENTOR
•Associate professor, ECE, University of Alabama
Dr Rachel Frazier
•Research Engineer, AIME, University of Alabama
DR Tim A Haskew
Department Head, ECE, University of Alabama
ADVISORS
MENTORS
Innovation
Counsel at
American
Chemical Society
Financial and
Technology
Industry Executive
TEAM
RANGE Electric
67. WHAT DO WE WANT ?
A SELF COMPETING CONTROLLER……..!
EFFICIENT, GOOD BUT SLOW AND
PARAMETER DEPENDENT CONTROLLER……!
INTELLIGENT, SELF LEARNING &
SUPER FAST CONTROLLER ……………
68. Ishan Jaithwa, S Li , X Fu, J Stoddard, “Hardware Experiment Evaluation of STATCOMs
using Artificial Neural Networks” (Preparing to submit)
Ishan Jaithwa, J Stoddard, S. Li “Hardware Experiment Evaluation of STATCOMs using
Conventional and Direct-Current Vector Control Strategies” (under review).
S. Li, Ishan Jaithwa, R Suftah, X Fu “Direct-Current Vector Control of Three-Phase Grid-
Connected Converter with L, LC and LCL Filters” (reviewd and under revision).
S. Li1, X Fu, M Fairbank, Ishan Jaithwa, E Alonso, and D C. Wunsch “Simulation and
Hardware Validation for Control of Three-Phase Grid-Connected Microgrids Using
Artificial Neural Networks” (under review).
X Fu, S. Li, and Ishan Jaithwa,“ Neural Network Vector Control for Single-Phase PV Grid
Converters ,” (Preparing to submit)
PUBLICATIONS
69. REFERENCES
[1] N.G. Hingorani, “Flexible AC Transmission Systems”, IEEE Spectrum, Vol. 30, No.
4, 1993, pp. 41-48.
[2] A. R. Bergen and V. Vittal, Power System Analysis, 2nd Ed. Upper Saddle River, NJ:
Prentice Hall, 2000.
[3] E. Acha, C.R. Fuerte-Esquivel, H. Ambriz-Perez, and C. Angeles-Camacho, “FACTS
– Modeling and Simulation in Power Networks,” Chichester, England: John
Wiley & Sons Inc., 2004.
[4] C. Schauder and H. Mehta, “Vector analysis and control of advanced static VAR
compensators,” IEE Proceedings-C, vol. 140, no. 4, pp. 299-306, Jul. 1993.
[5] Pablo García-González and Aurelio García-Cerrada, “Control system for a PWM-
based STATCOM,” IEEE Trans. on Power Delivery, vol. 15, no. 4, pp. 1252-
1257, Oct. 2000.
[6] Pranesh Rao, M. L. Crow, and Zhiping Yang, “STATCOM control for power system
voltage control applications,” IEEE Trans. on Power Delivery, vol. 15, no. 4,
pp. 1311-1317, Oct. 2000.
[7] S. Li, L. Xu, T.A Haskew, “Control of VSC based STATCOM using conventional and
direct current vector control strategies”, International Journal of Electric
Power & Energy Systems (Elsevier), Vol. 45, Issue 1, Feb. 2013, pp. 175-186.
Editor's Notes
WELCOME EVERYONE
A BRIEF DESCRIPTION OF WHAT I DID
IN THIS PRESENTATION I WOULD START WITH SOME BRIEF DESCRIPTION ON THE SIMULATION AND HARDWARE MODELS