Alexander Kusko

  • Solid-State DC Motor Drives

    Alexander Kusko

    Motor drives using solid-state power control elements though still in their early stages of development are progressing at a rapid pace. The next twenty-year period will see the electric automobile with thyristor speed control, the vast expansion of urban transportation using dc motor drive and thyristor-controlled electric trains, heavy on and off-highway vehicles of all types using gas turbines of air-conditioners, refrigerators, and other home appliances using solid-state controlled motors of all kinds.

    The purpose of this book is to bring together the technology of solid-state dc drives for the reader who wants to understand the principles, to specify and purchase drives, or to design his own drives. The principles used in the drives which will run the new machinery and appliances of the future will not differ from those described in this book, even though the packaging and ratings used in manufacturing may change.

    This is not a design text; design material is available in manufacturer's manuals. The material of the book stems from the author's consulting and teaching experience and from previously published papers. References for each chapter are furnished for those readers who wish to pursue the subject in each chapter in greater detail.

    The Table of Contents includes the following main chapters: 1. Drive Applications • 2. DC Motor Characteristics • 3. Rectifier Operation • 4. Single-Phase Drives • 5. Three-Phase Drives • 6. Series Universal Motor Drives • 7. DC-DC Drives • 8. Specification of Drives • 9. Control Equipment

    This volume is the first in a new MIT Press series titled Monographs in Modern Electrical Technology of which Alexander Kusko, Lecturer in Electrical Engineering, M.I.T., and head of a firm of consulting engineers, will be the General Editor.

    • Hardcover $25.00
  • Computer-Aided Design of Magnetic Circuits

    Alexander Kusko and Theodore Wroblewski

    The general purpose of this book is to present the reader to the field of computer-aided design frame an industrial viewpoint. All computer-aided design work has the common function of providing results that extend the engineer's ability to build and sell devices and equipment. However, each technical area has its own specialized techniques and problems, and the particular purpose of the book is to present those for the design of magnetic circuits.

    After stating the design problem, the book discusses the pertinent assumptions, equations, and models; develops methods for handling the interface with the attached electric circuits and the sequence of steps for computer-aided design; and finally presents the flow diagrams and typical input and output forms in use.

    The chapters are so arranged that the simplest magnetic-circuit device, the reactor, is considered first, followed by leakage-reactance transformers and regulating transformers. The last chapter covers conventional multiwinding transformers. For each class of device, the theory and modeling are treated, followed by numerical examples and the approach to computer-aided design. Many examples are oriented toward lamp ballasts, because their magnetic-circuit operation is realistically complex and because most of the problems were prepared for their design.

    The authors originally developed the computer programs presented here for actual industrial use, in reducing design time for new transformers, in exploring new magnetic-circuit configurations, and in obtaining more accurate designs to reduce cut-and-try work on prototypes. To accomplish this, much preliminary work was necessary to develop analytical techniques and mathematical models for the magnetic circuits and the electric circuits in which they were placed. The mere transfer of hand-design methods to computer programs would not have been successful in yielding useful and realistic computer-aided design methods.

    • Hardcover $13.50