This document summarizes different types of excitation systems for alternators. It discusses the function of excitation systems to supply direct current to the field winding and control the voltage and reactive power of alternators. The three main types covered are DC excitation systems, AC excitation systems, and static excitation systems. DC excitation systems use two small DC generators as exciters but are not commonly used for large alternators now. AC excitation systems include brushless and rotating thyristor types and have advantages like eliminating brushes. Static excitation systems have no rotating parts, are suitable for medium and high capacity alternators, and have benefits like smaller size and no windage losses. The document concludes that the selection of an excitation system depends on factors like the altern
Automatic voltaer regulator and it's modellingrajani51
in power supply system we have to keep the voltage constant.but when load is connected to the generator voltage difference will occur. to tackle this closed loop control of generator voltage is required. this can be achieved by AUTOMATIC VOLTAGE REGULATOR
Functions and Performance Requirements
Elements of an Excitation System
Types of Excitation Systems
Control and Protection Functions
Modeling of Excitation Systems
The functions of an excitation system are
to provide direct current to the synchronous generator field winding, and
to perform control and protective functions essential to the satisfactory operation of the power system
The performance requirements of the excitation system are determined by
Generator considerations:
supply and adjust field current as the generator output varies within its continuous capability
respond to transient disturbances with field forcing consistent with the generator short term capabilities:
rotor insulation failure due to high field voltage
rotor heating due to high field current
stator heating due to high VAR loading
heating due to excess flux (volts/Hz)
Power system considerations:
contribute to effective control of system voltage and improvement of system stability
Automatic voltaer regulator and it's modellingrajani51
in power supply system we have to keep the voltage constant.but when load is connected to the generator voltage difference will occur. to tackle this closed loop control of generator voltage is required. this can be achieved by AUTOMATIC VOLTAGE REGULATOR
Functions and Performance Requirements
Elements of an Excitation System
Types of Excitation Systems
Control and Protection Functions
Modeling of Excitation Systems
The functions of an excitation system are
to provide direct current to the synchronous generator field winding, and
to perform control and protective functions essential to the satisfactory operation of the power system
The performance requirements of the excitation system are determined by
Generator considerations:
supply and adjust field current as the generator output varies within its continuous capability
respond to transient disturbances with field forcing consistent with the generator short term capabilities:
rotor insulation failure due to high field voltage
rotor heating due to high field current
stator heating due to high VAR loading
heating due to excess flux (volts/Hz)
Power system considerations:
contribute to effective control of system voltage and improvement of system stability
Design factors; Limitations; Modern trends; Electrical
Engineering Materials; Space factor; Choice of Specific
Electric and Magnetic loadings; Thermal Considerations;
Heat flow; Temperature rise; Insulating Materials; Properties;
Rating of Machines; Various Standard Specifications ;
Inter Connected Power System(Turbine Speed Governing Mechanism )Raviraj solanki
Inter Connected Power System TOPIC : Turbine Speed Governing Mechanism
Introduction
Turbine Speed Governing Mechanism
Mathematical Modeling
Adjustment Of Governor Characteristics
The speed governing system consists of the following parts .
Speed governor
Linkage mechanism
Hydraulic amplifier
Speed changer
Er.Amit Chaurasiya studies at Azad Technical Campus Lucknow.All slide make very clear and easily understood suitable for Electrical Engineering students. I hope you will easily understand.
Speed control of Three phase Induction motor using AC voltage regulatorShivagee Raj
The role of AC Voltage Regulator in speed control of three phase Induction Motor is to vary the supply voltage which in turn, changes the speed of motor .
CONTENT
Starting Of Induction Motor
Starters
Types Of Starter For 3-ph Induction Motors
Starting Of Slip Ring Induction Motor
D.O.L.(Direct On Line) starter
Star-delta Starter
Auto Transformer Starter
Difference Between DOL/Star Delta/ Autotransformer
A flywheel, in essence is a mechanical battery - simply a mass rotating about an axis.Flywheels store energy mechanically in the form of kinetic energy.They take an electrical input to accelerate the rotor up to speed by using the built-in motor, and return the electrical energy by using this same motor as a generator.Flywheels are one of the most promising technologies for replacing conventional lead acid batteries as energy storage systems.
Modelling the system dynamics of islanding asynchronous generators / Telemark...Modelon
Study of Håkon Molland Edvardsen & Dietmar Winkler from Telemark University College
Norway (Modelica Conference 2014).
Modelon's Electric Power Library helps in the model-based reconstruction of events behind an earth circuit fault in Grunnåi, Norway.
Design factors; Limitations; Modern trends; Electrical
Engineering Materials; Space factor; Choice of Specific
Electric and Magnetic loadings; Thermal Considerations;
Heat flow; Temperature rise; Insulating Materials; Properties;
Rating of Machines; Various Standard Specifications ;
Inter Connected Power System(Turbine Speed Governing Mechanism )Raviraj solanki
Inter Connected Power System TOPIC : Turbine Speed Governing Mechanism
Introduction
Turbine Speed Governing Mechanism
Mathematical Modeling
Adjustment Of Governor Characteristics
The speed governing system consists of the following parts .
Speed governor
Linkage mechanism
Hydraulic amplifier
Speed changer
Er.Amit Chaurasiya studies at Azad Technical Campus Lucknow.All slide make very clear and easily understood suitable for Electrical Engineering students. I hope you will easily understand.
Speed control of Three phase Induction motor using AC voltage regulatorShivagee Raj
The role of AC Voltage Regulator in speed control of three phase Induction Motor is to vary the supply voltage which in turn, changes the speed of motor .
CONTENT
Starting Of Induction Motor
Starters
Types Of Starter For 3-ph Induction Motors
Starting Of Slip Ring Induction Motor
D.O.L.(Direct On Line) starter
Star-delta Starter
Auto Transformer Starter
Difference Between DOL/Star Delta/ Autotransformer
A flywheel, in essence is a mechanical battery - simply a mass rotating about an axis.Flywheels store energy mechanically in the form of kinetic energy.They take an electrical input to accelerate the rotor up to speed by using the built-in motor, and return the electrical energy by using this same motor as a generator.Flywheels are one of the most promising technologies for replacing conventional lead acid batteries as energy storage systems.
Modelling the system dynamics of islanding asynchronous generators / Telemark...Modelon
Study of Håkon Molland Edvardsen & Dietmar Winkler from Telemark University College
Norway (Modelica Conference 2014).
Modelon's Electric Power Library helps in the model-based reconstruction of events behind an earth circuit fault in Grunnåi, Norway.
Excitation System & capability curve of synchronous generatorMANOJ KUMAR MAHARANA
Excitation systems perform control and protective functions essential to the satisfactory performance of the power system.
The amount of continuous reactive power a generator can supply is restricted by various limits. In the over-excitation region limits are imposed by rotor heating or amount of field current and second is the stator current. In the under excitation region the limits are imposed by load angle. So in steady state the generator should always operate within this region and the loci of the various limiters are called the capability curve of the generator.
REVIEW OF LITERATURE ON INDUCTION GENERATORS AND CONTROLLERS FOR PICO HYDRO A...ijiert bestjournal
Operation of Induction motors as induction generato rs in grid connected and self excitation mode is well known. In many countries induction gen erators are used for electrical power generation by wind energy. Low cost,robustness and ease of maintenance are attractive features of induction generators. Even though these generators are used at some places for micro hydro power generation,very small scale gene ration known as pico hydro generation offers excellent opportunity for them. S lip ring induction motors are used for micro power generation and squirrel cage induction motors are used for pico power generation. These generators have an inherent probl em of terminal voltage variation with increase in load. Several different types of contro llers are developed and tested. This paper presents a review of literature related to the pres ent status of research work on self excited induction generators (SEIG),their terminal voltage control strategies and their applications.
eco friendly power generation through Speed breaker using water pressureSamir9064
Eco friendly power generation using spring coil mechanism .
Here , power is generated using hydro electric power generation principle by spring and piston arrangement. by this we get new idea for generation of power at low price.
Implementation of self excited induction generator (seig) with igbt based ele...eSAT Journals
Abstract In this paper, a mathematical model of the Self-Excited Induction Generator (SEIG) is developed to analyze the operation of it in wind energy systems. In such type of wind scheme often whole generating system is isolated from the grid and supply electricity to the remote communities. A wind energy system usually a low/medium speed projects driven by controlled/uncontrolled micro wind turbines. The single point operation of these generators is realized; in such a manner that speeds, voltage, currents of generators remain constant under various operating loads conditions. The Electronic Load Controller (ELC) is modeled here for the controlled operation of WES against various load condition. Here the proposed electrical system are modeled and simulated in MATLAB using Simulink and Sim Power System (SPS) set toolboxes and different aspects of the proposed system are studied. On the basis this model different characteristics of SEIG with ELC are analyzed which shows its suitability in wind energy systems. Index Terms: SEIG, ELC, Wind Energy, and Induction generator etc
Automatic Star Delta Starter Using Relays And Adjustable Electronic Timer For...Edgefxkits & Solutions
This PPT explains about how to provide low voltage start to induction motor. This is achieved by using star to delta conversions.
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DESIGN OF THE ELECTRONIC LOAD CONTROLLER USING MICRO CONTROLLER BASED ZERO CR...elelijjournal
Small hydro power plant project (SHPP) a significant role in renewable energy sector in several countries, Especially Indonesia, among different categories, community based and estate based hydro projects use electric load control technology since it can be locally manufactured, easily to installation and the low cost. For example; constant voltage and frequency in Self-Excited Induction Generator (SEIG). In this method, the principle of phase angle control of back to back thyristor is used. A thyristor is fired at a specific delay angle relative to the zero voltage crossing of the sine wave. A thyristor commutates at zero crossing, will be occurs a twice the frequency and generates total harmonic distortion about of 40% in current with added reactive power burden. This scheme can continuously vary the dump power over nearly the entire range from zero to full load as the delay angle varies from 0 to 180 degree.
In this presentation, it proposes efficient method of storing energy by the use of piezoceramic. It is very reliable to use
piezo ceramic for generating electrical energy which can be used for powering any portable devices. The basic concept
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Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
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.
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.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
Vaccine management system project report documentation..pdfKamal Acharya
The Division of Vaccine and Immunization is facing increasing difficulty monitoring vaccines and other commodities distribution once they have been distributed from the national stores. With the introduction of new vaccines, more challenges have been anticipated with this additions posing serious threat to the already over strained vaccine supply chain system in Kenya.
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.
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.
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The Single Aisle is the most advanced family aircraft in service today, with fly-by-wire flight controls.
The A318, A319, A320 and A321 are twin-engine subsonic medium range aircraft.
The family offers a choice of engines
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About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Halogenation process of chemical process industries
Excitation system for alternator
1. STUDY OF DIFFERENT TYPES OF EXCITATION
SYSTEM FOR ALTERNATOR
SANTU SUTRADHAR
ROLL NO- 10201615071
ELECTRICAL ENGINEERING
SUBMITTED BY :
Power Point Representation on
KALYANI GOVT. ENGINEERING COLLEGE
KALYANI : NADIA
2. 2
Alternator
Excitation System
Function Of Excitation System
Types Of Excitation System
Description Of Each Type
Conclusion
Reference
KGEC/EE 14/7/2016
3. It Is An Electrical Machine Which Converts
Mechanical Power Into Electrical Power By The
Principle Of Electro-magnetic Induction.
Alternators Are The Primary Source Of All The
Electrical Energy We Consume And Also The Largest
Energy Converters.
KGEC/EE 14/7/2016
3
5. The Process Of Creating And Strengthening The
Magnetic Field Of The Alternator By Providing
The Necessary Direct Current To The Field
Winding Of The Alternator
THE DIRECT CURRENT IS SUPPLIED TO THE ROTOR
BY A SEPARATE D.C. SOURCE, CALLED EXCITER.
KGEC/EE 14/7/2016
5
6. FUNCTION OF EXCITATION
Supply Direct Current To the Field Winding For
Creating Magnetic Field
Control Voltage & Reactive Power
Perform Protective Function
KGEC/EE 14/7/2016
6
7. 1. DC Excitation System
2. AC Excitation System
3. Static Excitation System
KGEC/EE 14/7/2016
7
8. D.C. EXCITATION SYSTEM
TWO SMALL D.C.GENERATORS ARE USED AS EXCITERS.
D C EXCITATION SYSTEM
It is the oldest of all. Due to various problem now a days it
is not conventionally used for large alternators
KGEC/EE 14/7/2016
8
9. A.C. EXCITATION SYSTEM
It Consists Of A.C. Generator And Thyristor Rectifier Bridge
Directly Connected To The Alternator Shaft or driven by
separate motor.
IT IS OF TWO TYPES
1. BRUSHLESS EXCITATION SYSTEM
2. ROTATING THYRISTOR EXCITATION SYSTEM
Main exciter is separately excited
Main exciter is self excited
KGEC/EE 14/7/2016
9
10. Elimination of brush & slip rings
Less maintenance
Fast response time
Suitable For Higher Rating Alternator
KGEC/EE 14/7/2016
10
13. STATIC EXCITATION SYSTEM
There Is No Rotating Part In This Excitation
System. So No Windage Loss & Small Size.
Suitable For Medium & High Capacity Alternator
KGEC/EE 14/7/2016
13
15. CONCLUSION
Selection of excitation system depends on
various factors
Alternator Power
Alternator Size
Alternator Speed
Maintenance Cost
KGEC/EE 14/7/2016
15
16. Theory & Performance of Electrical Machine by J.B. Gupta
https://www.quora.com
https://www.youtube.com
https://www.eblogbd.com
KGEC/EE 14/7/2016
16
