Manufacturers of electric vehicles require a wellthoughtout drive technology with the best performance. An electric motor is an electromagneticdevice that converts electrical energy intomechanical energy the first. The range of sizes and types of motors is large and the number and. Without electric motors, we would not have power tools, household appliances, or even cars.
Motors specification of electric motors marshall wolf automation. An induction motor also known as an asynchronous motor is a commonly used ac electric motor. Topics you will need to know to pass the quiz include energy transfer and examples of electric motors. For a rotary electric motor to work, there must be two magnetic fields, one associated with the stator and. An electrical motor is a device that has brought about one of the biggest advancements in the fields of engineering and technology ever since the invention. Serieswound brushed dc swdc motors have the field coil in series with the armature. Electric motors are now more diverse and adaptable than ever before. Without the motor, we had still been living in sir thomas edisons era where the only purpose of electricity would have been to glow bulbs. When purchasing a motor, its often asked which technology is better, ac or dc, but the fact is that it is application and cost dependent. Spring 2004 generic electric motor below figure shows cartoon of induction motor. Brushes and a commutator designed differently if a.
Different types of electric motors and their applications elprocus. In addition to economical driving techniques and good. It means that the motor load connected to the motor starter is typically started and stopped using a lower and safer voltage than the motor voltage. An electric motor consists of a permanent external field magnet stator and a coiled conducting ammeter rotor which is free to rotate within the field magnet. Low voltage ac motors for line and converter operation. Electrical motor types classification and history of motor. Unit objectives after studying this unit, the reader should be able to describe the different types of open singlephase. Electrical motor types classification and history of. The main parts of an electric motor include the stator and rotor, a series of gears or belts, and bearings to reduce friction.
Focus on the different types of motors used in industry. Ultraefficient and powerdense electric motors advanced electric motors offer large energy savings in industrial applications pumps, fans, and compressors use more than 60% of. An electric motor is an electrical machine that converts electrical energy into mechanical energy. An electric motor changes electrical energy into mechanical movement. Electrical motors ppt electric motor engines free 30.
Mechanical energy what is an electric motor an electric motor is a device converting electrical energy into mechanical energy usually a torque. Different types of electric motors and their applications. Backed by 150 years of experience, simotics motors are unrivaled when it comes to reliability, ruggedness, compactness, efficiency, and performance. Hysteresis motors with respect to the supply frequency, the speed is uniquely related and it is one of the rarest features of synchronous motors.
Electric motors and drives fundamentals, types and applications third edition austin hughes senior fellow, school of electronic and electrical engineering, university of leeds. This manual covers squirrel cage rotor motor where. Assessment of electric motors efficiency of electric motors factors that influence efficiency age capacity speed type temperature rewinding load. The electric motor operation is based on the following points. In most cases, the considerations can be extended to the other types. The rotor and stator are each connected from a different power supply, this gives another degree of freedom for controlling the motor over the shunt. Magnetic motor starters this is the other main type of motor starter. Motor nameplate informationthe service factor on a motor nameplate indicates how much above the nameplate rating a motor can be continuously loaded. It starts from basic physics and progresses to discuss stateof. In this paper, different electric motors are studied and compared to see the benefits of each motor and the one that is more suitable to be used in the electric vehicle ev applications. Dc shunt motor works on dc and the windings of this electric motor like the armature windings and field windings are linked in parallel which is known as a shunt. A dynamo or an electric generator does the reverse. Electric motors provide the driving power for a large and still increasing part of our modern industrial economy.
It is therefore used in starter motors of cars and elevator motors p. This kind of motor is also called as shunt wound dc motor, where the winding type is known as a shunt winding. Classification of electric motors electrical knowhow. These two electric motor designs are quite similar in appearance, but di. Ac motors are widely used to drive machinery for a wide variety of applications. By motion control online marketing team posted 09062016. Terms in this set 46 the two popular operating voltages for residences. It is estimated that about 70% of motors in industry are of this type, are used in, for example, pumps, compressors, conveyor belts, heavyduty electrical networks, and grinders. An electric motor is a device which converts electrical energy into kinetic energy i. In other words, the devices which produce rotational. Luckily, there is a motor design suitable for any imaginable purpose. Most motors described in this guide spin on an axis, but there are also specialty motors that. Backed by 150 years of experience, simotics motors are unrivaled when it comes to reliability. Dc motors also need a commutator to reverse current direction and.
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. Introduction to electric motors linkedin slideshare. An electric motor is a device converting electrical energy into. Its because of motors, life is what it is today in the 21st century.
Classification of electric motors part two electrical. Ok, lets take a short overview of twelve most basic motor types used for different industrial electric drives. Mainly there are two types of motors ac or dc motors which are further subdivided in different classes. An introduction to electric motors stmicroelectronics. Just like other motor starters, the magnetic starter also has an electrical contactor and. Those who are looking to enter an online or traditional electrical engineering. Electric motor is the electromechanical machine which converts the electrical energy into mechanical energy. Module 5, introduction to generators and motors, is an introduction to generators and motors, and covers the uses of ac and dc generators and motors in the conversion of electrical and. For example, electric motors that run continuously in fans and blowers for hours or days may be selected on the basis of continuous load, but electric motors located in devices like. The phase relation between the rotor and stator magnetic field i. Electric motors and their controls by tak kenjo, oxford science publications stepping motors a guide to theory and practice by paul acarnley, 4th edition, iee foundations of electric power. At least one of the two magnetic field is generated by a solenoid carrying a current. Some of the most common electric motors used today include. Like generators, electric motors consist of a stator and a rotor and the three ingredients.
This is an introductory work explaining the principles, construction, and use of electric motors and their associated drive controls. Motors the basics of motors it is important to select the motor that will help assure optimum performance of the equipment to be driven. When purchasing a motor, its often asked which technology is better, ac or dc. Introduction to power electronic converters for motor drives. What are the functions of parts in an electric motor.
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