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Phase angle controlled converter using back to back Thyristors or Triacs are being adopted to controlled the speed of voltage controlled single phase Induction Motor used for domestic Fan / Blower loads.
This method suffers from the disadvantages of low input power factor at lowers speeds due to low power factor. The fan draws more current than the required one. This leads to higher I2R Cu losses occurring in the stator of the single phase motor. The proposed techniques of i) Symmetrical Angle Controlled ii) High Frequency PWM Controlled are proposed with this techniques. This motor is
expected to draw lesser current at higher input power factor as compared to existing firing angle controlled speed controlled techniques. In this way, the motor would operate at higher efficiency, low Cu loss, high input power factor and reduced low order harmonics.
Energy Systems Optimization of a Shopping Mall: The present study focuses on the development of software (general mathematical optimization model) which has the following characteristics:
• It will be able to find the optimal combination of installed equipment (power & heat generation etc) in a Shopping Mall (micro-grid)
• With multi-objective to maximize the cost at the same time as minimizing the environmental impacts (i.e. CO2 emissions).
• To date, this tool is scarce to the industry (similar to DER-CAM, Homer).
Gene's law, Common gate, kernel Principal Component Analysis, ASIC Physical Design Post-Layout Verification, TSMC180nm, 0.13um IBM CMOS technology, Cadence Virtuoso, FPAA, in Spanish, Bruun E,
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Phase angle controlled converter using back to back Thyristors or Triacs are being adopted to controlled the speed of voltage controlled single phase Induction Motor used for domestic Fan / Blower loads.
This method suffers from the disadvantages of low input power factor at lowers speeds due to low power factor. The fan draws more current than the required one. This leads to higher I2R Cu losses occurring in the stator of the single phase motor. The proposed techniques of i) Symmetrical Angle Controlled ii) High Frequency PWM Controlled are proposed with this techniques. This motor is
expected to draw lesser current at higher input power factor as compared to existing firing angle controlled speed controlled techniques. In this way, the motor would operate at higher efficiency, low Cu loss, high input power factor and reduced low order harmonics.
Energy Systems Optimization of a Shopping Mall: The present study focuses on the development of software (general mathematical optimization model) which has the following characteristics:
• It will be able to find the optimal combination of installed equipment (power & heat generation etc) in a Shopping Mall (micro-grid)
• With multi-objective to maximize the cost at the same time as minimizing the environmental impacts (i.e. CO2 emissions).
• To date, this tool is scarce to the industry (similar to DER-CAM, Homer).
Gene's law, Common gate, kernel Principal Component Analysis, ASIC Physical Design Post-Layout Verification, TSMC180nm, 0.13um IBM CMOS technology, Cadence Virtuoso, FPAA, in Spanish, Bruun E,
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Step by step process of uploading presentation videos Hoopeer Hoopeer
Deep neural network, compressive sensing, floating gate techniques can be efficiently employed to increase voltage swing and reduce supply voltage requirements of class AB regulated cascode current mirrors, implement extreme low power analog circuits with this process. /also have good references for subthreshold region.
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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.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Understanding Inductive Bias in Machine LearningSUTEJAS
This presentation explores the concept of inductive bias in machine learning. It explains how algorithms come with built-in assumptions and preferences that guide the learning process. You'll learn about the different types of inductive bias and how they can impact the performance and generalizability of machine learning models.
The presentation also covers the positive and negative aspects of inductive bias, along with strategies for mitigating potential drawbacks. We'll explore examples of how bias manifests in algorithms like neural networks and decision trees.
By understanding inductive bias, you can gain valuable insights into how machine learning models work and make informed decisions when building and deploying them.
Water billing management system project report.pdfKamal Acharya
Our project entitled “Water Billing Management System” aims is to generate Water bill with all the charges and penalty. Manual system that is employed is extremely laborious and quite inadequate. It only makes the process more difficult and hard.
The aim of our project is to develop a system that is meant to partially computerize the work performed in the Water Board like generating monthly Water bill, record of consuming unit of water, store record of the customer and previous unpaid record.
We used HTML/PHP as front end and MYSQL as back end for developing our project. HTML is primarily a visual design environment. We can create a android application by designing the form and that make up the user interface. Adding android application code to the form and the objects such as buttons and text boxes on them and adding any required support code in additional modular.
MySQL is free open source database that facilitates the effective management of the databases by connecting them to the software. It is a stable ,reliable and the powerful solution with the advanced features and advantages which are as follows: Data Security.MySQL is free open source database that facilitates the effective management of the databases by connecting them to the software.
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.
NUMERICAL SIMULATIONS OF HEAT AND MASS TRANSFER IN CONDENSING HEAT EXCHANGERS...ssuser7dcef0
Power plants release a large amount of water vapor into the
atmosphere through the stack. The flue gas can be a potential
source for obtaining much needed cooling water for a power
plant. If a power plant could recover and reuse a portion of this
moisture, it could reduce its total cooling water intake
requirement. One of the most practical way to recover water
from flue gas is to use a condensing heat exchanger. The power
plant could also recover latent heat due to condensation as well
as sensible heat due to lowering the flue gas exit temperature.
Additionally, harmful acids released from the stack can be
reduced in a condensing heat exchanger by acid condensation. reduced in a condensing heat exchanger by acid condensation.
Condensation of vapors in flue gas is a complicated
phenomenon since heat and mass transfer of water vapor and
various acids simultaneously occur in the presence of noncondensable
gases such as nitrogen and oxygen. Design of a
condenser depends on the knowledge and understanding of the
heat and mass transfer processes. A computer program for
numerical simulations of water (H2O) and sulfuric acid (H2SO4)
condensation in a flue gas condensing heat exchanger was
developed using MATLAB. Governing equations based on
mass and energy balances for the system were derived to
predict variables such as flue gas exit temperature, cooling
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of water and sulfuric acid vapors. The equations were solved
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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.
The Internet of Things (IoT) is a revolutionary concept that connects everyday objects and devices to the internet, enabling them to communicate, collect, and exchange data. Imagine a world where your refrigerator notifies you when you’re running low on groceries, or streetlights adjust their brightness based on traffic patterns – that’s the power of IoT. In essence, IoT transforms ordinary objects into smart, interconnected devices, creating a network of endless possibilities.
Here is a blog on the role of electrical and electronics engineers in IOT. Let's dig in!!!!
For more such content visit: https://nttftrg.com/
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
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6th International Conference on Machine Learning & Applications (CMLA 2024)ClaraZara1
6th International Conference on Machine Learning & Applications (CMLA 2024) will provide an excellent international forum for sharing knowledge and results in theory, methodology and applications of on Machine Learning & Applications.
2. ANALOG CIRCUITS AND SIGNAL PROCESSING SERIES
Consulting Editor: Mohammed Ismail. Ohio State University
For other titles published in this series, go to
www.springer.com/series/7381
3. Dynamic Offset Compensated
CMOS Amplifiers
Delft University of Technology, the Netherlands
Springer
Boston/Dordrecht/London
Johan F. Witte, Kofi A.A. Makinwa, Johan H. Huijsing
8. viii
A. Layout Issues ................................................................................... 155
A.1 Introduction ......................................................................................... 155
A.2 Chopper layout .................................................................................... 157
A.3 Clock shielding .................................................................................... 160
A.4 Conclusion ........................................................................................... 162
A.5 References ........................................................................................... 162
About the Authors ....................................................................... 163
Index ...................................................................................................... 167
9. Preface
CMOS amplifiers suffer from relatively poor offset specifications. Since the
1980s techniques have been explored to calibrate for this offset, or to let the
amplifier itself compensate for its offset in some way or another. This latter
approach is often done dynamically during operation of the amplifier, hence
the name “dynamic offset compensation”. This thesis describes the theory,
design and realization of dynamic offset compensated CMOS amplifiers.
It focuses on the design of general-purpose broadband operational amplifiers
and instrumentation amplifiers.
Two distinguishable offset compensation techniques are described in
chapter 2: auto-zeroing and chopping. Several topologies are discussed, in chapter
3 which can be used to design broadband dynamic offset-compensated
operational amplifiers as well as instrumentation amplifiers, which are described
in chapter 4. Four implementations are discussed in this book: two low-offset
broadband operational amplifiers in chapter 5, and chapter 6 discusses a
low-offset instrumentation amplifier, and a low-offset current-sense amplifier,
which can sense battery currents at a 28V rail.
J.F. Witte
K.A.A. Makinwa
J.H. Huijsing
Delft, December 2008
ix
10. Acknowledgements
This book started as a Ph.D. thesis written at the Electronic
Instrumentation Laboratory of Delft university of technology, where I spent
an productive, learningfull period of more than 6 years obtaining both my
M.Sc. and Ph.D. degrees. I would start by thanking a lot of people, to whom I
am indebted.
Firstly, I would like to thank my inspirators Han Huijsing and Kofi
Makinwa. I am grateful to Han for introducing me into the field of precision
amplifiers. I want to thank Kofi for giving me good advice and proofreading
my publications.
Secondly, I would like to thank the people who in my opinion keep the
university’s wheels turning. Money makes the world go round and I would
like to thank Willem van der Sluys for guiding every person of the laboratory
through the financial bureaucracy. He even does it with a smile on his face.
Without tools an engineer would only be a philosopher, and, therefore, I
thank Antoon Frehe for keeping the computer servers in the air, despite
failing and leaking air conditioners. My thanks also go to Evelyn, Ingeborg,
Inge, Trudie, Pia, Helly and Joyce whose administrative support kept the
group running through the first years of my M.Sc. and Ph.D. projects, and my
thanks go to Ilse and Joyce who continue to keep the group running thanks to
their ongoing administrative support.
Thirdly, I would really like to thank all the people who helped me
during the design and measurements of my amplifiers. I want to thank Ger de
Graaf, who has also defeated me quite often in our regular tennis matches. I
want to thank Maureen Meekel, who even saw me crying once. Special
xi
11. Acknowledgements
thanks go to Piet, Jeff, Jeroen and Zu-Yao for helping me with various
measurement problems. I also want to thank Harry Kerkvliet, who sadly
enough passed away during my project, but he used to be a great help when a
student needed equipment.
Special thanks also go to my former roommates Vladimir and Peter, and
my fellow roommates Davina, Gayathri and Eduardo. Thanks also go to
Michiel, Martijn, and Paulo with whom I have also enjoyed some vacations as
well as tough technical discussions. I also have to thank the current group
members Mahdi Kashmiri, Caspar van Vroonhoven, Rong Wu, and Andre
Aita for many interesting discussions.
I would also like to thank all the people from Maxim semiconductor,
who helped me with the implementation of the current-sense amplifier. I
thank Paul and Bill for getting the project started, Matt Kolluri for helping me
through my first real product design cycle, Jennifer for her layout efforts,
Ray, Mike and Brian for their help in testing, and Rich for keeping the project
going.
I also thank my former house-mate, Rob. I really thank him for
maintaining a social circle. He taught me to drink whisky. We have brewed
some mead and together with Martijn, Bas and Marc we slayed a dragon or
two. Fun and friendship are necessary parts of life.
I also want to thank my family members. I especially want to thank my
father for supporting me in my education. My aunt Corry for giving me
advice over the years. I also would like to thank my mother. If you are able to
raise a child to become an engineer, or even a doctor, then you really haven’t
been a bad mother after all.
Finally I want to thank my girlfriend Sophie with whom I have struggled
through the last parts of this long and hard quest. Doing a Ph.D. is also a
burden on your most loved ones. She has carried that burden.
J.F. Witte
Delft, December 2008
xii