Almost 80% of the mechanical power used by industries is provided by three phase induction motors because of its simple and rugged construction, low cost, good operating characteristics, absence of commutator and good speed regulation. Due to a large installed base of motors using electricity, even a small improvement in efficiency can result in significant savings from a broader national perspective. Mechanical design of electric motors by wei tong engineering. Discover book depositorys huge selection of electric motors books online. Rotates a number of degrees with each electric pulse.
My original aim was to bridge the gap between specialist textbooks which are pitched at a level too academic for the average user and. The output torque of an electrical motor depends on the intensity of the rotor and stator magnetic fields and on their phase relation. This motor book will provide you with a wealth of information about electrical motors, how they work, what they can be used for, and so on. The three phase induction motor is the most widely used electrical motor. The fact that the book now has joint authors resulted directly from the publishers.
Electric motors and drives fundamentals types and applications. 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. Low voltage ac motors for line and converter operation. Introduction to power electronic converters for motor drives. But before we delve into detailed explanations of the world of electrical motors, we should perhaps spare a brief thought for the purpose of these motors.
Electric motors for machines and mechanisms mits fab lab. Fundamentals, types and applications by austin hughes, william drury book free download. A threephase electric motor, 100 hp 75 kw, iv poles, running at 100% of the rated power, with an original power factor of 0. Mechanical energy what is an electric motor an electric motor is a device converting electrical energy into mechanical energy usually a torque. Finally, a comparison between different motors is presented. Backed by 150 years of experience, simotics motors are unrivaled when it comes to reliability, ruggedness, compactness, efficiency, and performance.
Article pdf available in ieee electrical insulation magazine 2. The synchronous electrical generator also called alternator belongs to the. Like its predecessors, the third edition of this book is intended primarily for nonspecialist users and students of electric motors and drives. This conversion is usually obtained through the generation of a magnetic field by means of a current flowing into one or more coils.
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