No wonder that before 1910, in europe, locomotives provided with induction motor propulsion, were capable of delivering 200 kmh. Thermal reference speed and kinematic limiting speed. The handbook also discusses highefficiency motor speed characteristics, performance under partload conditions, and operation with an abnormal power supply. Electric motors, both ac and dc types, come in many shapes and sizes. Energy efficient electric motor selection handbook eep. The rotor has salient poles and a cage so that it starts like an induction motor, and runs like a synchronous motor. Be sure the motor shaft key is captive before the motor is energized. Thus, around 1900 the induction motor was ready for wide industrial use. Motor design software by motor design engineers motor design limited mdl is a world leader in the development of advanced software design tools for electrical machines. A superb source of innovative, productivity and profitincreasing solutions, handbook of small electric motors gives you more help with selection, calculation, assembly methods, and onthespot data than you. Spectral content of current probe signal depends on the motor and motor speed.
The magnet is spun by a 3 phase ac motor with no rotor voltage 4. Ac induction gearmotors and motors incl inverter duty chapter 2 in bodines gearmotor handbook describes operation and function of ac induction motors and gearmotors. Magnets in electric motors are almost exclusively assembled today using adhesives. Best practice manual electric motors prepared for bureau of energy efficiency, under ministry of power, government of india hall no. This manual is intended as a guide for electrical engineers and designers hereafter referred as the ae for the planning and design of the electrical power distribution and related systems. Our small motor, gearmotor and control handbook isbn. Grundfos motor book 24 grundfos motor book basic types of singlephase induction motors 2.
This reading is a very brief introduction to four most basic types of electric motors. The main reason for this endorcement is that they have done an excellent job of covering all major types of motors and they have included most of the new design currently being investigated for new motor applications. The book deals with the fundamentals, theory, and design of conventional cars with internal combustion engines ices, electric vehicles evs, hybrid electric vehicles hevs, and fuel cell vehicles fcvs. At least one of the two magnetic field is generated by a solenoid carrying a current. This book will allow engineers and designers to marry the technologies they know about with motor technology, and hence to incorporate motors into their products. Electric motors objectives after studying this unit, the student will be able to state the purpose of an electric motor. This tutorial will introduce the user to the fundamental electrical and mechanical principles of ac electric induction motor design and application.
How intensively the electric circuit is used the type of enclosure type of cooling the duty cycle of the load the frequency of starting and stopping s 34. Rotates a number of degrees with each electric pulse. B g specific magnetic loading ac specific electric loading select b g from experience limited by losses in the teeth and magnetizing current. General electric standard motors rated at 60 hz may be successfully. Mdl uses its expert knowledge of electric motor design to provide software and support to electric machine designers at some of the worlds most prestigious companies. A motors rotor must turn slower than the rotating magnetic field in the stator to induce an electrical current in the rotor conductor bars and thus produce torque. Single phase motors resistance startinduction run motors rsir this motor type is also referred to as splitphase motors. Backed by 150 years of experience, simotics motors are unrivaled when it comes to reliability, ruggedness, compactness, efficiency, and performance. Electric motor noise sound radiation in electric motors is.
Energy efficient electric motor selection handbook photo credit. Motor technologies for compliance with new effi ciency classes. Electric motor handbook the why, what and how of electric motor theory and practice 14. We discuss the various winding types splitphase, singlephase, shadedpole, and 3phase as well as how the line frequency, supply voltage and pole.
Motor design and, even more importantly, motor choice and use practices are an important area of potential energy conservation. This electrical installation handbook, however, aims to supply, in a single document, tables for the quick definition of the main parameters of the components of. Simotics industrial electric motors provide you with the optimum solution for every application. Franklin electric submersible motors are a waterlubricated design. They are usually cheaper than other singlephase motor types used by industries, but also have some limitations in terms of. General electric standard motors rated at 60 hz may be successfully operated at 50 hz at reduced voltage and horsepower as shown in the following table. An introduction to electric motors stmicroelectronics.
During continuous operations, the motor can be loaded up to the rated torque. As discussed earlier, in a bldc motor, the torque remains constant for a speed range up to the rated speed. The handbook of electric power calculationsprovides detailed stepbystep calculation procedures commonly encountered in electrical engineering. He is a registered professional engineer in the state of. It comprehensively presents vehicle performance, configuration, control strategy, design. The treatment throughout the handbook is practical with very little emphasis on theory. This conversion is usually obtained through the generation of a magnetic field by means of a current flowing into one or more coils. While a handful of different adhesive technologies are employed to meet the unique challenges of each specific motor s performance and processing requirements, it is widely accepted that adhesives create a higher quality joint at a lower cost than mechanical. Rather than motor design, their chief concerns lie with the selection, system installation, operation and performance evaluation of. The synchronous speed of the motor is given by equation 1. This book, therefore, targets the large body of workers engineers and students reasonably versed in engineering concepts who feel the need for practical insights relating to electric motors. This energyefficient electric motor selection hand book handbook shows you how to assess energy savings and cost effectiveness when making motor purchase decisions. The alternating current ac electric induction motor has been an industry workhorse for electromechanical conversion for over 100 years.
He has 20 years of consulting experience with dupont. The fill solution consists of a mixture of deionized water and propylene glycol a nontoxic antifreeze. Ss 120 x f p 120 x 60 8 900 rpm rotor speed motor slip is known, equation 2. Use proper protective gear, care and procedures when handling, lifting, installing, operating and. Ev power systems motors and controllers the power system of an electric vehicle consists of just two components. What is common to all the members of this family is that the basic physical process involved in their operation is the conversion. Uses soft magnet rotor that is magnetized by the application of current in the stator coils 3. Other members of the family are the directcurrent dc motor or generator, the induction motor or generator, and a number of derivatives of all these three.
Among electric motors, induction motors are most used both for home appliances and in various industries 111. The text that was researched and compiled contains explanations of the motor parts, theory about electromagnetism and how current is used to make an electrical motor rotate. Pdf on jul 4, 20, jf gieras and others published permanent magnet motor technology. Motor technologies for higher efficiency in applications. Electric motors and drives fundamentals, types and applications third edition austin hughes senior fellow, school of electronic and electrical engineering, university of leeds amsterdam boston heidelberg london new york oxford paris san diego san francisco singapore sydney tokyo newnes is an imprint of. Plugin electric vehicle handbook for electrical contractors 5 plugin hybrid electric vehicles phevs phevs sometimes called extended range electric vehicles, or erevs use batteries to power an electric motor and use another fuel, such as gasoline or diesel, to. Typical motor technical specification for a complete list of parameters. Rotating machines are used for the conversion of mechanical energy into electrical energy or vice versa. In the design of the induction motor, operational characteristics can be determined through a series of calculations. Page 2 of provide a motor that is best suited to a particular application. Dl tesla average magnetic flux density over airgap surface ac 32t phi ph.
When the load on the motor increases, the rotor speed decreases. Premium efficiency motor selection and application guide i acknowledgments the premium efficiency motor selection and application guide and its companion publication, continuous energy improvement in motordriven systems, have been developed by the u. Safety must be taken into account right from the design stage and must be kept in mind at all stages in the life of a machine. Electric motor and generator manufacturers have used loctite brand products to improve performance, to facilitate manufacturing processes and to reduce costs for more than 40 years. Get up to speed on the latest design and manufacturing tools and techniques with this expert guide from leaders of the motor industry. Electrical installation handbook protection, control and. Understand all facets of electronic motor control design implement microcontrollers, linear ics, optocouplers, sensors, and power devices master emi, rfi, and effective circuit board layout network motor control systems minimize electronic noise. In comparison, the power system of gasolinepowered vehicles consists of a number of components, such as the. So d2ln volume x speed s11k w b g ac get s from shaft output power hp or kw, efficiency and power factor. Practical electric motor handbook pdf by irving m gottlieb. The phase relation between the rotor and stator magnetic field i. This manual is intended as a guide for electrical engineers and designers hereafter referred as. For those experienced in engineering design, this is the guide to electric motors.
Electrical technology books in this section, you will find a collection of electrical technology books on various topics like power distribution systems, power transmission, substation, electrical equipment and electrical engineering safety interview question and answers. Mcgrawhill new york chicago san francisco lisbon london madrid mexico city milan new delhi san juan seoul singapore sydney toronto library of congress cataloginginpublication data handbook of small electric motors. Finally, a comparison between different motors is presented. While almost all manufacturers use adhesives and sealants in some assembly operations, very few manufacturers have developed the experience to fully take advantage of. Avoid long exposure in close proximity to machinery with high noise levels. Your customers are continually raising their expectations of. Performing these calculations can help the engineer. Presenting current issues in electric motor design, installation, application, and performance, this second edition serves as the most authoritative and reliable guide to electric motor utilization and assessment in the commercial and industrial sectors. Plugin electric vehicle handbook for electrical contractors 5 plugin hybrid electric vehicles phevs phevs sometimes called extended range electric vehicles, or erevs use batteries to power an electric motor and use another fuel, such as gasoline or diesel, to power an ice or other propulsion source. Associate editor yeadon energy systems, inc yeadon engineering services, p.
The electric motor operation is based on the following points. Motor speed relationship the synchronous speed of an ac motor is the speed of the rotating magnetic field set up by the stator winding synchronous speed rpm 120 x frequency divided by the number of poles. Department of energy doe office of energy efficiency and renewable energy eere with support from the copper. This is so because they have been traditionally fed directly from the threephase a. The book deals with the fundamentals, theory, and design of conventional cars with internal combustion engines ices, electric vehicles evs, hybrid. All electrical machines whether motors or generators using direct or alternating current, depend for their actions on the principles of electromagnetic induction. Bearing type and size, internal design, load, lubrication and cooling conditions as well as cage design, accuracy and internal clearance all play a part in determining speed capability. Mechanical energy what is an electric motor an electric motor is a device converting electrical energy into mechanical energy usually a torque. This electrical installation handbook, however, aims to supply, in a single document, tables for the quick definition of the main parameters of the components of an electrical plant and for the selection. Indian renewable energy development agency, core 4a, east court, 1st floor, india habitat centre, lodhi road, new delhi. The handbook contains a wide array of topics and each topic is written by an authority on the subject. New machines the machinery directive in the uk, at present the machinery directive 9837ec is implemented as the supply of. What is common to all the members of this family is that the basic. When the motor is coupled to equipment, ensure that system vibrations are within acceptable limit per iso 108161 to avoid failure of the motor.