An analysis is made of Claus Turtur's simple model where two electric charges connected by a spring appear to mutually increase their amplitude of oscillation. It is found that this effect depends on neglecting the radiation reaction that accelerating particles experience. Once radiation reaction is included, the oscillation become rapidly damped.
Introduction to reactive power control in electrical powerDr.Raja R
Introduction to reactive power control in electrical power
Reactive power in transmission line :
Reactive power control
Reactive power and its importance
Apparent Power
Reactive Power
Apparent Power
Reactive Power Formula
An analysis is made of Claus Turtur's simple model where two electric charges connected by a spring appear to mutually increase their amplitude of oscillation. It is found that this effect depends on neglecting the radiation reaction that accelerating particles experience. Once radiation reaction is included, the oscillation become rapidly damped.
Introduction to reactive power control in electrical powerDr.Raja R
Introduction to reactive power control in electrical power
Reactive power in transmission line :
Reactive power control
Reactive power and its importance
Apparent Power
Reactive Power
Apparent Power
Reactive Power Formula
A model for power losses reduction in low voltage distribution network of re...theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
Power controlability of 3phase converterprajwalkale
Three-phase dc–ac power converters suffer from power oscillation and over current problems in case of the unbalanced ac source voltage that can be caused by grid/generator faults. Existing solutions to handle these problems are properly selecting and controlling the positive- and negative-sequence currents. In this paper, a new series of control strategies which utilize the zero sequence components are proposed to enhance the power controllability under this adverse condition. It is concluded that by introducing proper zero-sequence current controls and corresponding circuit configurations, the power converter can enable more flexible control targets, achieving better performances in the delivered power and the load current when suffering from the unbalanced voltage.
Adaptive Hysteresis Band Current Control for Transformer-less Single-Phase PV...Asoka Technologies
Current control based on hysteresis algorithms are widely used in different applications, such as motion control, active filtering or active/reactive power delivery control in distributed generation systems. The hysteresis current control provides to the system a fast and robust dynamic response, and requires a simple implementation in standard digital signal platforms. On the other hand, the main drawback of classical hysteresis current control lies in the fact that the switching
frequency is variable, as the hysteresis band is fixed. In this paper a variable band hysteresis control algorithm will be presented. As it will be shown, this variable band permits overcoming the aforementioned problem giving rise to an almost constant switching frequency. The performance of this algorithm, together with classical hysteresis controls and proportional resonant (PR) controllers, has been evaluated in three different single-phase PV inverter topologies, by means of simulations performed with PSIM. In addition, the behavior of the thermal losses when using each control structure in such converters has been studied as well.
Synthesis of unsymmetrical phasors from their symmetrical componentsAbhishek Choksi
Power systems are large and complex three phase system
In normal operating conditions , electrical power system operate in balanced condition.
But sometimes certain situation occurs like fault or short circuit which make the system to be unstable.
Single phase equivalent system method of analysis cannot be applied to such system.
Exhibitor Insights Presentation from Retail’s BIG Show, January 15-17, 2017.
PHIL GEARY, Dir., Marketing and ECommerce, The Entertainer
SARAH TAYLOR, CMO, SmartFocus
ROB WOOD, Head of Online, The Entertainer
A model for power losses reduction in low voltage distribution network of re...theijes
The International Journal of Engineering & Science is aimed at providing a platform for researchers, engineers, scientists, or educators to publish their original research results, to exchange new ideas, to disseminate information in innovative designs, engineering experiences and technological skills. It is also the Journal's objective to promote engineering and technology education. All papers submitted to the Journal will be blind peer-reviewed. Only original articles will be published.
The papers for publication in The International Journal of Engineering& Science are selected through rigorous peer reviews to ensure originality, timeliness, relevance, and readability.
Power controlability of 3phase converterprajwalkale
Three-phase dc–ac power converters suffer from power oscillation and over current problems in case of the unbalanced ac source voltage that can be caused by grid/generator faults. Existing solutions to handle these problems are properly selecting and controlling the positive- and negative-sequence currents. In this paper, a new series of control strategies which utilize the zero sequence components are proposed to enhance the power controllability under this adverse condition. It is concluded that by introducing proper zero-sequence current controls and corresponding circuit configurations, the power converter can enable more flexible control targets, achieving better performances in the delivered power and the load current when suffering from the unbalanced voltage.
Adaptive Hysteresis Band Current Control for Transformer-less Single-Phase PV...Asoka Technologies
Current control based on hysteresis algorithms are widely used in different applications, such as motion control, active filtering or active/reactive power delivery control in distributed generation systems. The hysteresis current control provides to the system a fast and robust dynamic response, and requires a simple implementation in standard digital signal platforms. On the other hand, the main drawback of classical hysteresis current control lies in the fact that the switching
frequency is variable, as the hysteresis band is fixed. In this paper a variable band hysteresis control algorithm will be presented. As it will be shown, this variable band permits overcoming the aforementioned problem giving rise to an almost constant switching frequency. The performance of this algorithm, together with classical hysteresis controls and proportional resonant (PR) controllers, has been evaluated in three different single-phase PV inverter topologies, by means of simulations performed with PSIM. In addition, the behavior of the thermal losses when using each control structure in such converters has been studied as well.
Synthesis of unsymmetrical phasors from their symmetrical componentsAbhishek Choksi
Power systems are large and complex three phase system
In normal operating conditions , electrical power system operate in balanced condition.
But sometimes certain situation occurs like fault or short circuit which make the system to be unstable.
Single phase equivalent system method of analysis cannot be applied to such system.
Exhibitor Insights Presentation from Retail’s BIG Show, January 15-17, 2017.
PHIL GEARY, Dir., Marketing and ECommerce, The Entertainer
SARAH TAYLOR, CMO, SmartFocus
ROB WOOD, Head of Online, The Entertainer
The significance of power factor correction (PFC) has long been visualized as a technology requirement for improving the efficiency of a power system network by compensating for the fundamental reactive power generated or consumed by simple inductive or capacitive loads. With the Information Age in full swing, the growth of high reliability, low cost electronic products have led utilities to escalate their power quality concerns created by the increase of such “switching loads.” These products include: entertainment devices such as Digital TVs, DVDs, and audio equipment; information technology devices such as PCs, printers, and fax-machines; variable speed motor drives for HVAC and white goods appliances; food preparation and cooking products such as microwaves and cook tops; and lighting products, which include electronic ballasts, LED and fluorescent lamps, and other power conversion devices that operate a variety of lamps. The drivers that have resulted in this proliferation are a direct result of the availability of low-cost switch-mode devices and control circuitry in all major end-use segments: residential, commercial, and industrial.
Generator electricals for slideshare (wecompress.com)David P
Generator or Genset electrical components
Generator electrical calculations
Generator type of loads
what is power factor & how it affects the Generator performance
Generator load calculations
Ekeeda Provides Online Video Lectures, Tutorials & Engineering Courses Available for Top-Tier Universities in India. Lectures from Highly Trained & Experienced Faculty!
Ekeeda - First Year Enginering - Basic Electrical EngineeringEkeedaPvtLtd
The First Year engineering course seems more like an extension of the subjects that students have learned in their 12th class. Subjects like Engineering Physics, Chemistry, and Mathematics, are incorporated into the curriculum. Students will learn about some of the engineering subjects in this first year, and these subjects are similar to all the branches. Everyone will learn some basics related to the other streams in their first year. Ekeeda offers Online First Year Engineering Courses for all the Subjects as per the Syllabus.
Using the examples of wave and vector diagrams, we study the conditions for the appearance of components of inactive power in an AC network, which are known as reactive power and distortion power. It is shown that the components of the active, reactive power and distortion power are mutually orthogonal and form a power balance, which can be violated mainly due to methodological errors in calculating these components under conditions of non-stationary mode parameters. It is established that the interaction of reactive power and distortion power occurs at the instantaneous power level, and changing their phase shifts allows you to adjust the shape of the resulting power without involving additional active power in the AC network. The results obtained will allow not only to correctly determine the proportion and nature of the components of inactive capacities, which is valuable for solving the problems of optimizing modes in AC networks, but also to create effective technical means of compensating for the identified inactive capacities in the future.
Current and Electricity for class 10.pdfJackHassan2
Download our comprehensive Class 10 Current and Electricity PDF guide to master the fundamentals of electrical circuits, current flow, and key concepts in this critical science topic. This PDF provides clear explanations, diagrams, and practice questions to enhance your understanding and preparation. Covering the essential curriculum, it's an invaluable resource for students aiming for excellence in their science studies.
Current and Electricity for class 10.pdfJackHassan2
Download our comprehensive Class 10 Current and Electricity PDF guide to master the fundamentals of electrical circuits, current flow, and key concepts in this critical science topic. This PDF provides clear explanations, diagrams, and practice questions to enhance your understanding and preparation. Covering the essential curriculum, it's an invaluable resource for students aiming for excellence in their science studies.
Micro-controller based Automatic Power Factor Correction System ReportTheory to Practical
This project report represents one of the most effective automatic power factor improvements by using static capacitors which will be controlled by a Microcontroller with very low cost although many existing systems are present which are expensive and difficult to manufacture. In this study, many small rating capacitors are connected in parallel and a reference power factor is set as standard value into the microcontroller IC. Suitable number of static capacitors is automatically connected according to the instruction of the microcontroller to improve the power factor close to unity. Some tricks such as using resistors instead of potential transformer and using one of the most low cost microcontroller IC (ATmega8) which also reduce programming complexity that make it one of the most economical system than any other controlling system.
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
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
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.
2. POWER TRIANGLE HAS THREE SIDES:-
1-APPARENT POWER (VA)
2-REACTIVE POWER (VAR)
3-REAL POWER (W)
3. THE RELATIONSHIP B/W THESE CAN BE
EXPRESSED BY REPRESENTING QUANTITIES AS
VECTORS.
REAL POWER IS HORIZONTAL VECTOR.
REACTIVE POWER IS VERTICAL POWER.
APPARENT POWER IS HYPOTENUSE OF RT.ANGLED
TRIANGLE.
(apparent power)2 = (real power)2 + (reactive
power)2
RATIO OF REAL POWER TO APPARENT POWER IS
CALLED POWER FACTOR.
PF=W / VA
4. The relationship between real power, reactive power
and apparent power. Which can be expressed by
representing the quantities as vectors. Real power is
represented as a horizontal vector and reactive power
is represented as a vertical vector. The apparent
power vector is the hypotenuse of a right triangle
formed by connecting the real and reactive power
vectors. This representation is often called the power
triangle. Using the Pythagorean Theorem, the
relationship among real, reactive and apparent power
is:
(apparent power)^2 = (real power)^2 + (reactive
power)^2
5. Real and reactive powers can also be calculated
directly from the apparent power, when the
current and voltage are both sinusoids with a
known phase angle between them
The is related due to the fact that everything
above deals with electrical units (watts ect)
and as an electrical engineer, you are
responsible for all electrical aspects of a
project icluding any and all calculations.
6. The power factor of an AC electrical power
system is defined as the ratio of the real
power flowing to the load to the apparent
power in the circuit,and is a dimensionless
number in the closed interval of -1 to 1
7. As the power factor decreases, the
ratio of real power to apparent
power also decreases, as the angle θ
increases and reactive power
increases.
10. Increasing the Power
Factor:
As the power factor increases, the ratio of real
power to apparent power increases and
approaches unity (1), while the angle θ
decreases and the reactive power decreases.
11. Decreasing the Power Factor:
As the power factor decreases, the ratio of real power to
apparent power also decreases, as the angle θ increases and
reactive power increases.
