Variable Speed Drive Fundamentals

Newly revised and edited and written in sttraightforward "user language." This book provides an authoritative, yet practical guide for the engineer or technician involved in specifying, applying, maintaining or operating variable frequency drives (VFDs). It includes full coverage of both AC and DC motors and controls. Included are the latest developments in this rapidly changing technology, and overview of starting controls and their application to various types of induction motors, discussion of some of the latest electronic "smart" motor controllers and attributes and capabilities of the "wound-rotor motor, " including how to configure a basic control system for it. A basis is given to compare motor torque and operating characteristics using "starters." The book provides a detailed evaluation of the most common versions of variable frequency drives.