This document discusses the benefits of installing high efficiency motors (HEMs). HEMs save money over the long run through lower energy costs compared to standard motors. They improve equipment reliability and reduce downtime and repair costs. HEMs are more efficiently designed to reduce various types of losses that occur during the electrical to mechanical energy conversion process in motors. This increases the motor's electrical efficiency. The key benefits are that HEMs use less input power to produce the same output power as standard motors, resulting in long-term savings that outweigh the higher initial capital costs. Properly selecting a HEM for an application can maximize these energy and cost savings.
Comprehensive Power is a leading designer
and manufacturer of high-performance motors,
generators, controls and drive electronics,
specializing in permanent magnet technology.
Comprehensive Power Introduction March 2013Jeff Sable
Introduction to the most innovative drive lineup and and motors/generators for mobile power and mobile generation. Comprehensive Power products provide significant economic and environmental to clients in the drilling, marine propulsion, military, and renewable energy industries.
Comprehensive Power Introduction Q1 2013Jeff Sable
Introduction to the most innovative drive lineup and and motors/generators for mobile power and mobile generation. Comprehensive Power products provide significant economic and environmental to clients in the drilling, marine propulsion, military, and renewable energy industries.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Comprehensive Power is a leading designer
and manufacturer of high-performance motors,
generators, controls and drive electronics,
specializing in permanent magnet technology.
Comprehensive Power Introduction March 2013Jeff Sable
Introduction to the most innovative drive lineup and and motors/generators for mobile power and mobile generation. Comprehensive Power products provide significant economic and environmental to clients in the drilling, marine propulsion, military, and renewable energy industries.
Comprehensive Power Introduction Q1 2013Jeff Sable
Introduction to the most innovative drive lineup and and motors/generators for mobile power and mobile generation. Comprehensive Power products provide significant economic and environmental to clients in the drilling, marine propulsion, military, and renewable energy industries.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
A Comparative Performance Analysis DCR and DAR Squirrel Cage 3-Phase Inductio...paperpublications3
Abstract: The importance of energy saving in induction motor was emphasized about 15 years ago, in academic area, but the motor manufacturer’s interest is focussed only on maximum benefit. As a customer, it is better to take into account not only the motor price, but also the cost of the used energy during the whole lifetime of the motor. The new requirement to improve the motor efficiency is a serious research subject, which must be about the possibility of loss minimization in the induction motor.
On an average the cost of energy consumed by the motor is nearly 80 – 100 times the initial cost of the initial manufacturing cost of the motor. So the efficiency of motor is of great importance whether during the selection or during the operation. Small increase in motor efficiency can make an overall significant difference in total energy consumption.
The slightly higher initial cost of DCR motors is often misunderstood as a demerit. It is not all true. The increase in initial cost is offset by the energy saving.
This paper presents the comparative analysis of performance of a DCR motor and DAR motor. The method of analysis is based upon testing results. The only change in design is that the Die cast aluminium rotor is replaced by die cast copper rotor. The other design parameters like stator core, winding, air gap length etc are remains same.
Energy efficient motors use less electricity, run cooler, and often last longer than NEMA (National Electrical Manufacturers Association) B motors of the same size.This presentation is on ' ENERGY EFFICIENT INDUCTION MOTOR ' which is mostly use in industries.
A Comparative Performance Analysis DCR and DAR Squirrel Cage 3-Phase Inductio...paperpublications3
Abstract: The importance of energy saving in induction motor was emphasized about 15 years ago, in academic area, but the motor manufacturer’s interest is focussed only on maximum benefit. As a customer, it is better to take into account not only the motor price, but also the cost of the used energy during the whole lifetime of the motor. The new requirement to improve the motor efficiency is a serious research subject, which must be about the possibility of loss minimization in the induction motor.
On an average the cost of energy consumed by the motor is nearly 80 – 100 times the initial cost of the initial manufacturing cost of the motor. So the efficiency of motor is of great importance whether during the selection or during the operation. Small increase in motor efficiency can make an overall significant difference in total energy consumption.
The slightly higher initial cost of DCR motors is often misunderstood as a demerit. It is not all true. The increase in initial cost is offset by the energy saving.
This paper presents the comparative analysis of performance of a DCR motor and DAR motor. The method of analysis is based upon testing results. The only change in design is that the Die cast aluminium rotor is replaced by die cast copper rotor. The other design parameters like stator core, winding, air gap length etc are remains same.
Energy efficient motors use less electricity, run cooler, and often last longer than NEMA (National Electrical Manufacturers Association) B motors of the same size.This presentation is on ' ENERGY EFFICIENT INDUCTION MOTOR ' which is mostly use in industries.
Recent technological developments have led to the introduction of very efficient motors, often referred to as Super- and Ultra- Premium Efficiency Motors, with efficiencies well above the IE3 level (mandatory in the USA and in the EU). Cost-effective induction motors (IM) with efficiencies above the IE4 threshold are now widely available on the market and other advanced technologies (Permanent Magnet Motors and Synchronous Reluctance) have enabled manufacturers to produce motors that exceed the IE4 and even meet IE5 thresholds.
This webinar gives an overview of these advanced technologies, their principles of operation, potential efficiency gains, benefits and drawbacks.
Study of Optimization of Squirrel Cage Induction Motor Using DCR Technologypaperpublications3
Abstract: Induction motors are versatile electric motors suited best for industrial applications as well as low-power application in domestic equipment because of their unique advantage compared to other types such as dc and synchronous motors. Electric motors do not transfer 100% of the input electrical energy into kinetic mechanical energy. A certain percentage of electrical energy is “lost” during the conversion to mechanical energy. These losses, in motor windings, core and rotating mechanical parts reduces the energy efficiency of motors. In today’s power crisis condition it is very important to manufacture the motors which are more efficient than the standard motors which are already available. The AC induction motor has been continuously improved by optimising stator and rotor design and electric material properties and quantities. With given exterior motor dimensions, the potential efficiency gain is limited and costly. DCR technology is a new development to reduce losses by using copper instead of aluminium for the conductor bars and end rings in rotors to enhance its efficiency and performance. This paper reviews the historical development in squirrel cage rotor designs, importance of energy efficient motors, efficiency improvement, adoption of DCR technology and the optimization of 3- phase squirrel cage induction motor.
1. INTRODUCTION
In the future, the cost of energy will increase due to environmental problems and limited resources. The electric motor consumes major part of the electric energy in the industry. The induction motor is the main driven system in the modern industrial society. It would also reduce the production of greenhouse gases and push down the total environmental cost of electricity generation. Also these motors can reduce maintenance costs and improve operation in industry. Energy efficient motors use less electricity, run cooler, and often last longer than NEMA (National Electrical Manufacturers Association) B motors of the same size.
Motors and motor-driven systems account for 43%-46% of all global electricity consumption and 69% of all electricity used by industry. Inefficient electric motors waste electrical energy and therefore cost more to operate. Since most electricity is generated from fossil-fuelled power plants, motors and motor-driven systems are also indirect contributors to greenhouse gas emissions produced by these plants. Hence, there are compelling economic and environmental reasons to increase the use of energy efficient motors.
An EEM produces the same shaft output power, but uses less input power than a standard efficiency motor.A standard motor is a compromise between efficiency, endurance, starting torque, and initial cost. Standard motor generally competes on price, not efficiency. On the contrary, EEM competes on efficiency, not price.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
Francesca Gottschalk from the OECD’s Centre for Educational Research and Innovation presents at the Ask an Expert Webinar: How can education support child empowerment?
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...
Save Money with Copper
1. Copper saves more
money in the long run
There is a capital investment that can repay
many times its original value over the next 20
years. And at the same time, improve equipment
reliability, reduce downtime and repair costs, and
result in lower releases of carbon dioxide to the
atmosphere.
The formula is straightforward: install high efficiency
motors having the highest electrical energy
efficiency commensurate with your needs.
High efficiency motors pile up savings worth many
times their purchase cost for as long as they remain
in service.
2. Understanding or its equivalent,
Efficiency, % = Watts (Input ) - Watts (Losses) x 100
Electrical Efficiency Watts (Input)
“Losses” stands for all the energy “fees” the motor
Electric motors are simply devices that convert charges in order to make its electrical-to-mechanical
electrical energy into mechanical energy. Like all energy conversion. Their magnitude varies from
electromechanical equipment, motors consume motor to motor and can even vary among motors of
some “extra” energy in order to make the conversion. the same make, type and size. In general, standard
Efficiency is a measure of how much total energy a motors have higher losses than HEMs.
motor uses in relation to the rated power delivered
to the shaft. Types of Losses
A motor’s nameplate rating is based on output Energy losses in electric motors fall into four
horsepower, which is fixed for continuous operation categories:
at full load. The amount of input power needed to • Power losses
produce rated horsepower will vary from motor to • Magnetic core losses
motor, with high-efficiency motors (HEM) requiring less • Friction and windage losses, and
input wattage than less-efficient models to produce • Stray load losses.
the same output. Electrical energy input is measured
in watts, while output is given in horsepower. (This Power losses and stray load losses appear only
convention applies in the USA; output power for when the motor is operating under load. They are
motors manufactured in other countries may be therefore more important than magnetic core losses
stated in watts or kilowatts.) One horsepower is and friction and windage losses, which are present
equivalent to 746 watts. even under no-load conditions.
There are several ways to express motor efficiency, Power losses, also called I²R losses, are the most
but the basic concept and the numerical results are important of the four categories and can account for
the same. For example: more than one-half of a motor’s total losses. Power
Efficiency, % = 746 x Horsepower (output) x 100 losses appear as heat generated by resistance
Watts (input) to current flowing in the stator windings and rotor
conductor bars and end rings.
Efficiency, % = Watts (output) x 100
Watts (input) Stator losses make up about 66% of power losses, and
it is here that motor manufacturers have achieved
The ratio describes efficiency in terms of what can
significant gains in efficiency. Since increasing
be observed from outside the motor, but it does
the mass of stator windings lowers their electrical
not say anything inside that makes one motor more
resistance (and therefore reduces I²R losses), HEMs
or less efficient than another. For example, we can
typically contain about 20% more copper than
rewrite the equation as:
standard models of equivalent size and rating.
Efficiency, % = Watts (output) x 100
Watts (output) + Watts (Losses)
3. Rotor losses, another form of power losses, are also High electrical conductivity
called slip losses because they are largely (but not
entirely) dependent on the degree of slip the motor Conductivity is an important characteristic of the
displays. Slip is the difference in rpm between the rotor. Conductor bars in large motors are normally
rotational speed of the magnetic field and the made from high-conductivity copper. Conductor
actual rpm of the rotor and shaft at a given load. bars in small-to-intermediate size motors, up to
S = Ns - N about 200 hp, depending on manufacturer, are in
Ns the form of a die-cast aluminum “squirrel cage” that
Where “S” is “slip”, “N” is “output speed under load” gives these motors their common name. Increasing
and “Ns” “synchronous (no-load) speed, rpm”. the mass of the die-cast bars requires changes in
the slots in the rotor laminations, through which the
Rotor losses are reduced by decreasing the degree bars are cast, and that changes the rotor’s magnetic
of slip. This is accomplished by increasing the mass structure. Lowering rotor I²R losses in what are typically
of rotor conductors (conductor bars and end-plates) aluminum alloy squirrel cage motors is therefore not
and/or increasing conductivity, and to a lesser a simple task.
extent by increasing the total flux across the air gap
between rotor and stator. Copper has higher electrical conductivity than
aluminum, and it would be an ideal conductor
Magnetic core losses arise from hysteresis effects, bar material except for the fact that it is difficult to
eddy currents and magnetic saturation, all of which die cast. A process to produce die-cast copper
take effect in the steel laminations. Magnetic losses rotors has recently been developed and, when fully
can account for up to 20% of total losses. With commercialized, it will enable the production of
proper design, use of better materials and stringent motors with even higher efficiencies than the best
quality control, these losses can be reduced models currently available.
considerably.
The fact that HEMs tend to have less slip (run faster)
The most effective means to reduce hysteresis and than standard motors must be taken into account in
saturation losses is to utilize steels containing up to certain applications.
4% silicon for the laminations in place of lower-cost
plain carbon steels. The better magnetic properties For example, energy consumption by centrifugal
offered by silicon steels can reduce core losses by loads such as fans and rotary compressors is
10 to 25%. proportional to the cube of rotational speed. If such
loads are driven at the higher speed of a low-slip,
Reducing the laminations’ thickness also helps: HEM directly replacing a standard motor, energy
substituting 26-ga or 29-ga steel for the 24-ga steel consumption can actually increase. This situation
found in standard motors lowers core losses by can sometimes be resolved by lowering rotational
between 15 and 25%. Lengthening the lamination speed with a variable-speed drive, gears or pulleys.
stack, which reduces the flux density within the stack, There are other parameters, such as torque or
also reduces core losses. Eddy current losses can be starting current, that can vary among motors of
reduced by ensuring adequate insulation between the same nominal horsepower. It is important to
laminations, thus minimizing the flow of current (and properly engineer the application of any motor to
I²R losses) through the stack. the intended task.