Electric Machines: Principles, Applications, and Control Schematics (Second Edition)

Electric machines bring together circuit theory, magnetism, and mechanical action. In this second edition, Dino Zorbas builds from those underlying ideas toward the operation and control of transformers and major types of motors and generators. The result is a textbook organized to connect electrical principles with the machines that put them to work.

Start with the principles behind the machines

The opening chapter develops the groundwork: electric and magnetic circuits, impedance, power factor, harmonics, magnetic losses, inductance, and the relationships among force, energy, and torque. This progression gives readers a foundation for understanding why machines behave as they do—not just the names of their parts.

From transformers to rotating machines

Subsequent chapters turn to single-phase and three-phase transformers, induction machines, single-phase motors, synchronous machines, and DC machines. Topics listed in the contents include equivalent circuits, operating characteristics, power and torque relationships, and methods for analyzing machine performance.

Practical questions of operation and control

The treatment also addresses industrial considerations and control topics, including starting methods, variable-frequency drives, and soft starting for induction motors. In the transformer chapter, readers encounter parallel operation, instrument transformers, wiring diagrams, and nameplate data—details that connect theoretical analysis to equipment in use.

A structured text for study and reference

Chapter summaries, review questions, and problems appear in the contents for several chapters, giving the material a clear textbook rhythm: introduce the concepts, apply them to a machine, then return to the central relationships. The book is suited to readers studying electric machines or electromechanical energy conversion who want a connected account of foundational theory and practical machine topics.

For a guided study of how electrical and magnetic principles shape real machines, Electric Machines offers a substantial route from fundamentals to applications.