Over the last decade, the cost of electric energy has more than doubled in most of the countries all over the world. Advertised efficiency of motors is a big deal in the market. Efficient energy utilization through proper design of microchannel heat exchanger manifolds. The energy consumption of electric motors can be reduced in two main ways by implementing efficient speed control and by increasing the efficiency of the motors themselves. For example if an electric motor is working for an hour weekly, it will take long time to pay off. Global energy solutions is the premier provider of all types of electric motor repair and service. Understanding motor efficiency losses matters because less efficient units leads to higher. With efficient motors, you would have following benefits. Northwestern electromechanical corporation llc szemo was established in 1994. This force creates a torque on a loop of wire present in the magnetic field, which causes the motor to spin and perform useful work. Energy efficient electric motors ali emadi, john c. Motor efficiency is a ratio of how well the motor converts electrical energy into mechanical energy and is calculated by dividing the.
Priority for an electric motor energy efficiency programme. Electric motors are widely used in various sectors where mechanical energy is. Energy efficient motors an electric motor can consume electricity to the equivalent of its capital cost within the first 500 hours of operation a mere three weeks of continuous use, or three months of single shift working. The law implemented new energy efficiency standards for threephase induction motors from 1 to 200 hp. Pdf energy efficient motor driven systems researchgate. Since the programs are based on replacement at failure, the full savings potential is realized after three years or more. Assume that we want to compare annual energy savings of an eff1 and eff2 electric motors for a pump system which has 7,5 kw power and operates 247. Electric motors can be powered by direct current dc sources, such as from batteries, motor vehicles.
Current scope of electric motors energy conservation standards 2. He also discusses how to calculate the return on investment for an energy efficient motor in addition to several other subjects related to effective motor applications. Using energy efficient motors can reduce your operating costs in several ways. As a direct result of this, the annual energy cost to operate the motors also doubled. These are to be found mainly in the industrial and commercial sector 4. The paper presents the main energy efficiency related regulations, the most applicable efficiency increasing technical solutions. John caroff, marketing manager for low voltage motors, siemens industry, inc. A perfect storm has been brewing around electric motors and drives. Since the programs are based on replacement at failure, the full savings potential is. Electric motor remanufacturing and energy savings january. For an electric motor, efficiency is the ratio of mechanical power delivered by. Efficient energy use, sometimes simply called energy efficiency, is the goal to reduce the amount of energy required to provide products and services.
The electricmotor manufacturers are seeking methods for improving the motor efficiencies, which resulted in a new generation of electric motors that are known as energyefficient motors. In addition to the new law, significant increases in the cost of. Dekker new york wikipedia citation please see wikipedias template documentation for further. We offer comprehensive inspection, repair, maintenance, remanufacturing and testing services for electric motors, generators, pumps, vfds, gearboxes and other rotating electrical equipment and controls. An electric motor is a device used to convert electricity into mechanical energyopposite to an electric generator. Electrical power problems,especially poor incoming power quality can affect the operation of energyefficient motors. An electric vehicle ev starts with a huge advantage over an internal combustion engine ice vehicle. Generally, motor life doubles for each 10 c reduction in operating temperature. Andreas induction motor characteristics energyefficient motors electric power costs the power factor application of electric motors induction motors and adjustablespeed drive systems. Decrease 00 demand charge design b motors drive system duty cycle eddy current electric energy electric motor electric power energy savings energyefficient motors fluid drive frequency gould inc ieee increase integral horsepower inverter kilowatt kilowatthours. Twodimensional digital filters, wusheng lu and andreas antoniou 81. As of fiscal year 2000, does motor challenge program was inte. Optimisation of the design and operation of the complete system.
Other motors do exist that operate on electrostatic and piezoelectric principles, but they are less common. Electric motor repair global energy solutions electric. This detailed reference provides guidelines for the selection and utilization of electric motors for improved reliability, performance, energyefficiency, and lifecycle cost. Selecting highly efficient surrounding core components like pumps, fans, compressors, transmissions, variable speed drives as well as appropriate type and size for the system. Selecting highly efficient surrounding core components like pumps, fans, compressors, transmissions, variable speed drives as well as appropriate type and size for the.
Reasons to determine motor loading most electric motors are designed to run at 50% to 100% of rated load. Energy efficient motors use less electricity, run cooler, and often last longer than nema national electrical manufacturers association b motors of the same size. The physics of saving energy and controlling productivity the importance of drives and motors there are some 10 million electric motors driving production in uk industry. Investments in improving energy efficiency of electric motor systems are often. Baldor electric, john widstrand of leeson electric. Determining electric motor load and efficiency energy. Thus, a 10horsepower hp motor has an acceptable load range of 5 to 10 hp.
Previous edition titled energyefficient electric motors. Although great care has been taken to provide accurate and current. World energy consumption electric motors 2011 statista. Energy efficient motors an electric motor can consume electricity to the equivalent of its capital cost within the first 500 hours of operation a mere three weeks of continuous use, or three months of. Andreas this detailed reference provides guidelines for the selection and utilization of electric motors for improved reliability, performance, energy efficiency, and lifecycle cost. The report proposes a global work plan for energyefficiency policy opportunities for electric motor systems. Most electric motors operate through the interaction between the motor s magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor s shaft.
Motor meps guide 2009 the guide informs on new standards for electric motors. The following table compares official epa ratings for fuel economy miles per gallon gasoline equivalent, mpge, for plugin electric vehicles for series production allelectric passenger vehicles rated by the epa as of november 2016, versus epa rated most fuel economic plugin hybrid with long distance range chevrolet volt second generation, gasolineelectric hybrid car toyota prius. This statistic shows the global energy consumption of electric motors in 2011, by sector. Energyefficient electric motors and their applications. The motor system including upstream components take the example of two 25 hp, offtheshelf, 460 v, 3phase, tefc motors, 250 feet from the load center, running at 75% load, 6,000 hours per year, served by a no. Computeraided analysis and design of switchmode power supplies, yimshu lee 82. Induction motor characteristics energyefficient motors electric power costs the power factor application of electric. Jordan explainsin a clear mannerthe technology of energy efficient electric motors including motor losses, testing, and efficiency labeling. We offer comprehensive inspection, repair, maintenance. Andreas, 9780824785963, available at book depository with free delivery worldwide.
This means that any significant improvement in affordable highly efficient electric motors could be profoundly important and beneficial to the health of planet earth. Although great care has been taken to provide accurate and current information, neither the authors nor the publisher, nor anyone else associated with this publication. Energy savings by means of energy efficient electric motors. Elkmotor electric motors, electric motors elk motor. Commission to help companies improve the energy efficiency of their electric motor. Gerd bramerdorfer andrea cavagnino silvio vaschetto. In future, the initial cost may be available at the same cost as a standard motor when the population of ee motors increases.
To effectively evaluate the benefits of high efficiency electric motors, we must define efficiency. Motor efficiency is a ratio of how well the motor converts electrical energy into mechanical energy and is calculated by dividing the power into the motor by the power out of the motor. Most electric motors operate through the interaction between the motor s magnetic field and electric current in a wire winding to generate force in the form of torque applied on the motor s. With electric motors accounting for an estimated 65 percent of industrial energy use, any increases in efficiency clearly provide the potential for major savings. This working program rrc round robin for converter loss. This means that any significant improvement in affordable highly efficient. On the energy efficiency of electric vehicles with. Download energy efficient motors seminar reports, abstract. Stochastic largescale engineering systems, edited by spyros g. An electric motor is an electrical machine that converts electrical energy into mechanical energy. Revised and updated throughout, the second edition of energyefficient electric motors provides guidelines for picking and using electric motors on an energy conservation and lifecycle cost basis. Dekker new york wikipedia citation please see wikipedias template documentation for further citation fields that may be required. Energy efficient motor programs are applicable to any ac motor installations utilizing nema design b induction motors. Understanding electric motor efficiency losses groschopp.
Appliance standards rulemakings and notices energy. The energy policy and conservation act of 1975, as amended, prescribes energy. Hts motors are best suited for large motor applications at ratings above horsepower hp. For example, insulating a home allows a building to. Department of energys doe office of energy efficiency and renewable energy eere in decem ber 1998. Energyefficient electric motors, revised and expanded. Revised and updated throughout, the second edition of energy efficient electric motors provides guidelines for picking and using electric motors on an energy conservation and lifecycle cost basis emphasizing both single and threephase motors in the 1 to 200hp range that offer maximum opportunities for energy savingsmaintaining the features of the first edition, this concise resource. The following table compares official epa ratings for fuel economy miles per gallon gasoline equivalent, mpge, for plugin electric vehicles for series production allelectric passenger vehicles rated by the. Energy conservation by using energy ecient electric motors.
Energy efficient motors give a very good output for the energy they consume. The motors described in this guide all operate on the principle of electromagnetism. Ice vehicles generally run at about 20% efficiency, meaning that 80% of the energy content of their fuel. Doe reports that electric motors consume 50% of electricity and 85% of industrial electric consumption. Usually it is of normal cost and slightly more than the normal motors. Maximum efficiency is usually near 75% of rated load. Energyefficient motor programs are applicable to any ac motor installations utilizing nema design b induction motors. Hanitsch, university of technology berlin germany 1 preface the electricity sector has a particular importance in the eu15 energy sector, with electricity.
John petro is a consultant specializing in high efficiency electric motor designs using. This circuit is one of many supplied by a 1,500kva drytype transformer. Andrea vezzini, bern university of applied sciences. Decrease 00 demand charge design b motors drive system duty cycle eddy current electric energy electric motor electric power energy savings energy efficient motors fluid drive frequency gould inc ieee increase integral horsepower inverter kilowatt kilowatthours. Annual electric motor sales volume and energy savings potential. Energyefficient electric motors pdf free download epdf. He also discusses how to calculate the return on investment for an energy efficient motor in addition to several other subjects related to effective motor. Andreas induction motor characteristics energy efficient motors electric power costs the power factor application of electric motors induction motors and adjustablespeed drive systems. Market transformation for energy efficient electric motor systems. The motor system including upstream components take the example of two 25 hp, offtheshelf, 460 v, 3phase, tefc motors, 250 feet from the load center, running at 75% load, 6,000 hours per year. A motor s efficiency tends to decrease dramatically below about 50% load. Energyefficient electric motors, third edition, revised and expanded by john c.
Energyefficient electric motors, third edition, revised. Premium efficiency motor selection and application. Using readily available information such as motor nameplate capacity, operating hours, and electricity price you can quickly determine the simple payback that would result from selecting and operating an energy efficient motor. They operate using principles of electromagnetism, which shows that a force is applied when an electric current is present in a magnetic field. Mar 24, 2015 advertised efficiency of motors is a big deal in the market. Expanded scope of electric motor energy conservation standards 3. Energyefficient electric motors selection and application semantic.
Pdf switching to energy efficient motor driven systems can save europe up to 202 billion. United states industrial electric motor systems market. The physics of saving energy and controlling productivity the importance of drives and motors. The energy policy and conservation act of 1975, as amended, prescribes energy conservation standards for various consumer products and certain commercial and industrial equipment, including small electric motors. It is about 15% to 30% more than the normal motors. Today szemo is a holding of companies, specialized in production, wear parts. United states industrial electric motor systems market opportunities assessment december 2002 this document was originally published by the u. Energyefficient electric motorscopyright 2005 by marcel dekker electrical and computer engineering a series of r. Energyefficient electric motor selection handbook cedengineering. Motors and drives for efficient control abb conversations. Pdf current trends in energy efficient electrical machines. The electric motor manufacturers are seeking methods for improving the motor efficiencies, which resulted in a new generation of electric motors that are known as energy efficient motors. They operate using principles of electromagnetism, which shows that a force is applied. Twodimensional digital filters, wusheng lu and andreas.
Nov 26, 2012 a perfect storm has been brewing around electric motors and drives. Energyefficient electric motors selection and application. Doe has published a federal register notice of proposed determination pertaining to standards for small electric motors. It is not necessary to use premium efficient electric motor. For example, insulating a home allows a building to use less heating and cooling energy to achieve and maintain a comfortable temperature. Andreas krings aldo boglietti andrea cavagnino steve sprague.