Results 221 to 230 of about 11,625 (264)
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Energy-efficient steels for motor laminations
Journal of Materials Engineering and Performance, 1992Motors use over 60% of all electricity generated, and their losses exceed 200 × 109 kW.hr/year. A significant part of this loss results from eddy currents and hysteretic processes in the motor laminations. These so- called core losses cost motor users about $3 × 109/year.
F. E. Werner, R. I. Jaffee
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Quality and reliability of energy efficient motors
IEEE Industry Applications Magazine, 1997Even though the stage has been set for energy conservation being one of the major drivers in the design of general-purpose industrial motors, it was not intended to be at the expense of reliability or the overall motor performance. Some have felt that the drive for increased efficiency would diminish motor life and performance. This article is based on
A H Bonnett
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Energy-Efficient Motor and Drives
1998This paper presents an overview about energy-efficient motor technologies, namelly Energy Efficient Motors (EEMs), Variable Speed Drives (VSDs), efficient transmission systems, etc. It also identifies the main barriers to the penetration of those technologies as well as the strategies which can be used to overcome those barriers and contribute to make ...
Aníbal T. Almeida, Paula Fonseca
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1997
The need for energy conservation in North America has accelerated the requirement for increased levels of electric motor efficiency. Various studies as the A.D. Little Report, sponsored by the Federal Energy Administration, indicate that approximately two thirds of all generated A.C. power is used to drive electric motors.
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The need for energy conservation in North America has accelerated the requirement for increased levels of electric motor efficiency. Various studies as the A.D. Little Report, sponsored by the Federal Energy Administration, indicate that approximately two thirds of all generated A.C. power is used to drive electric motors.
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Maximising energy efficiency with electric motors
Open Access Government, 2023Maximising energy efficiency with electric motors Rukmi Dutta from the University of New South Wales discusses the mechanisms and efficiency potential of electric motor systems, looking at how electric motors work, efficiency and losses and improving overall system efficiency for electric motors.
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Repairability of Energy-Efficient Motors
IEEE Transactions on Industry Applications, 1984The high-efficiency energy-saving ac motor is becoming commonplace in industry today. One of the questions frequently asked upon purchasing one of these motors is, "Can it be repaired economically and still maintain its efficiency?" This question is addressed by specialized processes necessary to repair these motors properly along with the elements ...
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Motor Developments and Energy Efficiency
1997In the past few years, the European Commission, motor manufacturers, trade bodies and standards authorities have been looking at ways of encouraging Europe’s industry to become more energy efficient. Having identified motors and drives as among the biggest consumers of electricity, the aim now is to examine what progress manufacturers of motors are ...
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Energy Efficient Motor Driven Systems
Energy & Environment, 2004The Motor Challenge Programme is a voluntary programme promoted by the European Commission to help companies improve the energy efficiency of their electric motor driven systems. The Challenge focuses on electric drives, compressed air, fan and pump systems, for which it has been demonstrated that there exists a large technical and economic potential ...
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Quantifying the Energy Efficiency of Motors on Inverters
IEEE Industry Applications Magazine, 2011With an ever-Increasing focus on energy efficiency along with the more widespread application of adjustable frequency inverters, it is important to accurately quantify the energy efficiency of motors fed with adjustable frequency power. The impact of inverter waveforms on the component and overall loss of motors are dealt with in this article.
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Technology of Energy-Efficient Motors
1994Electric motors function as energy converters changing electrical to mechanical energy and are one of the most efficient means of energy conversion known. Although some losses do occur in the conversion process, the majority of the electrical energy which enters the motor is converted to mechanical form and delivered to the load. Consider Fig.
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