Energy and power are fundamental concepts in electromagnetism and circuit theory, as well as in optics, signal processing, power engineering, electrical machines, and power electronics. However, in crossing the disciplinary borders, we encounter understanding difficulties due to (1) the many possible mathematical representations of the same physical objects, and (2) the many possible physical interpretations of the same mathematical entities. The monograph proposes a quantum and a relativistic approach to electromagnetic power theory that is based on recent advances in physics and mathematics. The book takes a fresh look at old debates related to the significance of the Poynting theorem and the interpretation of reactive power. Reformulated in the mathematical language of geometric algebra, the new expression of electromagnetic power reflects the laws of conservation of energy-momentum in fields and circuits. The monograph offers a mathematically consistent and a physically coherent interpretation of the power concept and of the mechanism of power transmission at the subatomic (mesoscopic) level. The monograph proves (paraphrasing Heaviside) that there is no finality in the development of a vibrant discipline: power theory.

Electrical (Generator and Electrical Plant), Volume 4 is a five-chapter text that covers the principles, design, manufacture, characteristics, and maintenance of generators and electrical plant equipment. Chapter 1 deals with the design, construction, and operational aspects of large turbo-generators of up to 500 MW rating. Chapter 2 summarizes the practices in respect of main switchgear and ancillary equipment for generating stations. Chapter 3 looks into the main parameters of the electrical auxiliary system design and the details of the switchgear, motors, and associated equipment. Chapter 4 describes the construction and assembly, design, operation, and maintenance of transformers. This chapter also covers the development of power cables for transformers, installation, and commissioning tests. Chapter 5 examines the role of protection in system design and the principles and operation of automatic voltage regulators. This book is of great value to workers and students who are interested in the design and operation of electrical plant equipment.