Valves – Troubleshooting and repair
A control valve is a valve used to control the flow of fluids by varying the size of the flow passage as directed by a signal from a controller
This allows direct control of the flow rate and the consequent control of process quantities such as pressure, temperature and liquid level.
In automatic control terminology, a control valve is called a “final control element”.
More information on valves
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Electric Motors and Drives: Fundamentals, Types and Applications
Best-selling reference on electric motors and drives for non-specialists, bridging the gap between mathematics and theory.
Mechanical Design of Electric Motors
Rapid increases in energy consumption and emphasis on environmental protection have posed challenges to the motor industry, as has the design and production of highly efficient, reliable, cost-effective, energy-efficient, quiet, precisely controlled and durable electric motors.
Suitable for motor designers, engineers and manufacturers, as well as maintenance personnel, undergraduate and graduate students, and academic researchers, Mechanical Design of Electric Motors provides in-depth knowledge of cutting-edge design methods and electric motor development. From engine classification, engine component design, model configuration, material and bearing selection, to power losses, engine cooling, design integration, vibration and acoustic noise, this comprehensive text covers the fundamentals, practical design and issues related to the design, modeling and simulation, technical analysis, manufacturing processes, test procedures and performance characteristics of today's electric motors.
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Design and manufacturing details of major components and subsystems, such as rotors, shafts, stators and frames
Examines various cooling techniques, including forced air, liquid, and phase change
Discusses the analysis and calculation of engine power losses
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Presents technical analysis methods and case study results
Emphasizes construction, optimization, and applications
With research findings derived from the author's direct personal experience and the significant contributions of others, Mechanical Design of Electric Motors highlights the innovative and advanced electric motors developed in recent decades.
Mechanical Design of Electric Motors
The importance of electric motors is well known in various engineering sectors. The book provides comprehensive coverage of various types of electric motors, including DC motors, three-phase and single-phase induction motors, synchronous motors, universal motors, AC servo motors, linear induction motors, and stepper motors. The book covers all the details of DC motors, including torque equation, back electromotive force, characteristics, types of starters, speed control methods and applications.
The book also covers various testing methods of DC motors such as Swinburne test, brake test, deceleration test, field test and Hopkinson test. The book also explains three-phase induction motors in detail. Includes rotating magnetic field production, construction, operation, effect of slip, torque equation, torque ratios, torque-slip characteristics, losses, power flow, equivalent circuit, effect of harmonics on performance, circular diagram, and applications. This chapter also includes discussion of the induction generator. The book teaches various methods of starting and controlling the speed of three-phase induction motors. The book incorporates the explanation of various single phase induction motors. The chapter on synchronous motor provides a detailed discussion of construction, working principle, behavior under load, phasor diagram analysis, V-shaped and inverted-V curves, chase, synchronous capacitor and applications. The book also teaches about various special machines such as single-phase commutator motors, universal motors, AC servo motors, linear induction motors, and stepper motors. The book uses simple and lucid language to explain each topic. The book provides the logical method of explanation of various complicated topics and step by step methods to facilitate understanding. Each chapter is well supported with the necessary illustrations, self-explanatory diagrams and a variety of solved problems. The book explains the philosophy of the topic which makes the understanding of the concepts very clear and makes the topic more interesting.
Motor Starting and Control Primer: An introduction to the starting techniques and control of electric motors
Whether you are a busy electrical engineer who needs to brush up on your knowledge of motor starting, a student new to the subject, or an interested person with an hour to spare, this book is the place to start. Steven McFadyen shares his expert knowledge on engine starting in a clear and easily accessible way without long and tedious discussions. Complete with circuit diagrams and in-depth explanations of the most common motor starting methods and their challenges, this book is an invaluable reference. It has something to offer anyone who wants to learn new things, while at the same time assisting practicing electrical engineers in the design and implementation of reliable and functional motor starters.
