Electric motors an introductory guide to electric motors for chemical engineers 2. There are a variety of types of electric motors are available in the market. Unit 16 electric motors objectives after studying this unit, the student will be able to state the purpose of an electric motor. 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. Mechanical energy what is an electric motor an electric motor is a device converting electrical energy into mechanical energy usually a torque. Since there is such a wide variety of these motors, it is impossible to describe all of them.
Comparative study of using different electric motors in the electric vehicles. An ac motor of this type may be part of a pump or fan or. 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. Therefore, ac commutator motors are used for wide rage speed control at around unity power factor. 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. Electric motors presentation on types and classification. Electric machines by dp kothari and ij nagrath is designed to supplement textbooks on electric machines. The mechanical energy can be used to perform work such as rotating a pump impeller, fan, blower, driving a compressor, lifting materials etc. Types of ac motor definition and classification of ac motor. 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.
A survey on comparison of electric motor types and drives used for. Electric motors and drives fundamentals, types and applications, 4th ed. Pdf comparative study of using different electric motors. Different types of electric motors and their applications. Introduction to ac motors ac motors electronics textbook. The new internationally standardized energy efficiency classes relate to to threephase asynchronous squirrel cage motors. Figure 171 shows the basic schematic diagrams for the singlephase motors. Menzel elektromotoren gmbh in berlin is one of the manufacturers of such motors.
Use features like bookmarks, note taking and highlighting while reading electric motors and drives. An electric motor is an electrical machine that converts electrical energy into mechanical energy. These are the threephase, asynchronous electric motors with shortcircuit rotor, explosion protected according to the cenelec en 600790, en 600791, en 600797 iec 600790, iec 600791 standards. 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. Rotates a number of degrees with each electric pulse. Dc motor principle a machine that converts dc power into mechanical energy is known as dc motor. 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. Understanding motor nameplate information nema vs iec. Motors are the work horses of hybrid electric vehicle drive systems. Single phase series motor, repulsion motor and scharge motor are types of ac commutator motor.
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. For customers outside the usa, we require collect shipping on your fedex, ups or dhl account. This chapter will describe the most common types found on army watercraft. Electrical motor electric motor electromagnetic induction. The selection of these motors can be done based on the operation and voltage and applications. Have you ever noticed what kind of motor drives the ceiling fan. Ac motors are used worldwide in many applications to transform electrical energy into mechanical energy. If you have the part, model, or id number or just specs that you would like to request a quote for, feel free to fill out the form below. Download it once and read it on your kindle device, pc, phones or tablets. Transmission of electrical energy covered longer distances at a lower loss with alternating current. Electric motors presentation on types and classification 1. 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. Fundamentals, types and applications kindle edition by hughes, austin, drury, bill.
The electric traction motor drives the wheels of the vehicle. Fundamentals, types and applications by austin hughes, william drury book free download. Unlike a traditional vehicle, where the engine must ramp up before full torque can be provided, an electric motor provides full torque at. Squirrel cage wound rotor with slip rings the rotating magnetic field. Induction motors have constant speed characteristics and low operating power factor. The new standard iec 60034301 was published in march 2014, replacing its predecessor iec 6003430 from 2008. Unit 16 electric motors washington state university. Pdf electric machines by dp kothari and ij nagrath pdf. Understanding motor nameplate information nema vs iec standards course content the motor standards can be grouped into two major categories. It is therefore used in starter motors of cars and elevator motors p. As we know, an electric motor plays a vital role in every sector of the industry, and also in a wide range of applications. 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. 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. Singlephase ac motors are the most common motors built.
The synchronous electrical generator also called alternator belongs to the family of electric rotating machines. 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 free download as powerpoint presentation. Electric motor wikipedias article on electric motors in general. 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. Practical electric motor handbook pdf by irving m gottlieb. It is true that single phase motors are less efficient substitute for 3phase motors but 3phase power is normally. Its operation is based on the principle that when a current carrying conductor is placed in a. 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.
An induction motor also known as an asynchronous motor is a commonly used ac electric motor. Electric vehicles are using electric machines for propulsion and energy recuperation. Know about the different categories that these motors can be classified into. Electric motors for explosive atmospheres instructions manual for installation, operation and maintenance of electric motors date. The enclosures of electric motors are designed to be flameproof according to. This conversion is usually obtained through the generation of a. 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. Read here to know about these electrical motors and their exhaustive classification. The stator is a permanent magnet, so the motor is smaller in size.
Dc motors although ac motors are used in most of the cases, dc motors have many applications and used for multipurpose applications. 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. Pdf electric motors and drives fundamentals, types and. Ultimately, motors are the interface between the electrical and mechanical systems of a facility. In north america, the national electric manufacturers association nema sets motor standards. Know where these different types of motors are used.
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