Fundamentals, types and applications by austin hughes, william drury electric motors and drives is intended for nonspecialist users of electric motors and drives, filling the gap between maths and theorybased academic textbooks and the more prosaic handbooks, which provide useful detail but little opportunity for the development of real insight. Dc motor principle a machine that converts dc power into mechanical energy is known as dc motor. Unlike a traditional vehicle, where the engine must ramp up before full torque can be provided, an electric motor provides full torque at. As we know, an electric motor plays a vital role in every sector of the industry, and also in a wide range of applications. Rotates a number of degrees with each electric pulse. There are a variety of types of electric motors are available in the market. Unit 16 electric motors washington state university. Understanding motor nameplate information nema vs iec. The new standard iec 60034301 was published in march 2014, replacing its predecessor iec 6003430 from 2008. Ac motor wikipedias article types of motor, history and some theory ac industrial electric motors rs datasheet pdf download two speed motors a primer on two speed motors.
It is true that single phase motors are less efficient substitute for 3phase motors but 3phase power is normally. Since there is such a wide variety of these motors, it is impossible to describe all of them. Menzel elektromotoren gmbh in berlin is one of the manufacturers of such motors. Fundamentals, types and applications kindle edition by hughes, austin, drury, bill. The selection of these motors can be done based on the operation and voltage and applications. An electric motor is an electrical machine that converts electrical energy into mechanical energy. Know where these different types of motors are used. 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. Transmission of electrical energy covered longer distances at a lower loss with alternating current. Different types of electric motors and their applications. Use features like bookmarks, note taking and highlighting while reading electric motors and drives.
An induction motor also known as an asynchronous motor is a commonly used ac electric motor. Unit 16 electric motors objectives after studying this unit, the student will be able to state the purpose of an electric motor. Understanding motor nameplate information nema vs iec standards course content the motor standards can be grouped into two major categories. 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. Electric motors and drives fundamentals, types and applications 4th edition by austin hughes and bill drury ac electric motors control advanced design techniques and applications by fouad giri electric motor control 9th edition by stephen l.
It is therefore used in starter motors of cars and elevator motors p. Electric motors and drives is intended for non specialist users of electric motors and drives, filling the gap between maths and theory based academic textbooks and the more prosaic handbooks, which provide useful detail but little opportunity for the development of real insight and understanding. The stator is a permanent magnet, so the motor is smaller in size. Electric motors and drives is intended for nonspecialist users of electric motors and drives, filling the gap between maths and theorybased academic textbooks and the more prosaic handbooks, which provide useful detail but little opportunity for the development of real insight and understanding. Induction motors have constant speed characteristics and low operating power factor. An ac motor of this type may be part of a pump or fan or. Electric motors presentation on types and classification 1. Electric machines by dp kothari and ij nagrath is designed to supplement textbooks on electric machines. The electric traction motor drives the wheels of the vehicle. An electric motor converts electric energy into mechanical energy, while an electric generator converts mechanical kinetic energy into electrical energy compared to an internal combustion engine, an electric motor has several advantages. This chapter will describe the most common types found on army watercraft. Mechanical energy what is an electric motor an electric motor is a device converting electrical energy into mechanical energy usually a torque. Fundamentals, types and applications, fifth edition is intended primarily for nonspecialist users or students of electric motors and drives, but many researchers and specialist industrialists have also acknowledged its value in providing a clear understanding of the fundamentals.
Dc motors although ac motors are used in most of the cases, dc motors have many applications and used for multipurpose applications. Electric motors presentation on types and classification. Practical electric motor handbook pdf by irving m gottlieb. Electric motors and drives is intended for nonspecialist users of electric motors and drives, filling the gap between maths and theorybased academic textbooks and the more prosaic handbooks, which provide useful detail but little opportunity for the. Read here to know about these electrical motors and their exhaustive classification. Electric motors and drives fundamentals, types and applications, 4th ed. Essential information on motor nameplate website 28. Figure 171 shows the basic schematic diagrams for the singlephase motors. The new internationally standardized energy efficiency classes relate to to threephase asynchronous squirrel cage motors. Squirrel cage wound rotor with slip rings the rotating magnetic field. 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.
The synchronous electrical generator also called alternator belongs to the family of electric rotating machines. Types of ac motor definition and classification of ac motor. Pdf electric machines by dp kothari and ij nagrath pdf. Electric motors defined as electromechanical devices that convert electrical energy to mechanical energy. Introduction to ac motors ac motors electronics textbook. Ultimately, motors are the interface between the electrical and mechanical systems of a facility. In an induction motor, the electric current in the rotor needed to produce torque is obtained via electromagnetic induction from the rotating magnetic field of the stator winding. This conversion is usually obtained through the generation of a. Electric motors an introductory guide to electric motors for chemical engineers 2. Know about the different categories that these motors can be classified into. Have you ever noticed what kind of motor drives the ceiling fan.
Single phase series motor, repulsion motor and scharge motor are types of ac commutator motor. A survey on comparison of electric motor types and drives used for. After the introduction of the dc electrical distribution system by edison in the united states, a gradual transition to the more economical ac system commenced. The enclosures of electric motors are designed to be flameproof according to. Electric motor wikipedias article on electric motors in general. Fundamentals, types and applications by austin hughes, william drury book free download. 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. However, due to mechanical, as well as operational reasons, permanent magnets in synchronous machines are restricted to those with ratings much lower than large turbinedriven generators, which is. Pdf comparative study of using different electric motors.
Comparative study of using different electric motors in the electric vehicles. Motors are the work horses of hybrid electric vehicle drive systems. There are many types of ac motors, but this course focuses on threephase induction motors, the most common type of motor used in industrial applications. Electrical motor electric motor electromagnetic induction.
For customers outside the usa, we require collect shipping on your fedex, ups or dhl account. The mechanical energy can be used to perform work such as rotating a pump impeller, fan, blower, driving a compressor, lifting materials etc. Ac motors are used worldwide in many applications to transform electrical energy into mechanical energy. Therefore, ac commutator motors are used for wide rage speed control at around unity power factor. Its operation is based on the principle that when a current carrying conductor is placed in a. Electric motors for explosive atmospheres instructions manual for installation, operation and maintenance of electric motors date. Electrical motor free download as powerpoint presentation.
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