Variable speed drive fundamentals

This latest edition continues to be a generic down-to-earth presentation of motor and drive system fundamentals, directed to those involved with the application and operation of motors and drives. Nearly every chapter has been expanded and updated to reflect the rapidly changing technology. Annotation Written in straightforward "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). A comprehensive overview of starting controls and their application to various types of induction motors provides a valuable assessment of the advantages and disadvantages of each type of control. You'll find a helpful discussion of some of the latest electronic "smart" motor controllers, as well as a section covering the 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 presentation provides a detailed evaluation of the most common versions of variable frequency drives. Current trends in addressing harmonic problems created by VFDs are discussed, along with use of new IGBT technology. Other topics include sizing and applying of VFDs, controlling enclosure heat, and energy saving opportunities 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.