TRANSFORMER DESIGN PRINCIPLES BY Robert M.Del Vecchio, Bertrand Poulin, Pierre T.Feghali, Dilipkumar M.Shah and Rajendra Ahuja
CONTENTS:
1 Introduction to Transformers
2 Transformer Circuit Models, Including Magnetic Core Characteristics and Applications
3 Reactance Calculations
4 Fault Current Calculations
5 Rabins’ Method for Calculating Leakage Fields, Forces and Inductances in Transformers
6 Mechanical Design
7 Capacitance Calculations
8 High Voltage Insulation Design
9 Electric Field Calculations
10 Losses
11 Thermal Model of a Core Form Power Transformer and Related Thermal Calculations
12 Load Tap Changers
13 Phase Shifting Transformers
14 Cost Minimization
PREFACE:
Many of the standard texts on power transformers are now over ten years old and some much older. Much has changed in transformer design since these books were written. Newer and better materials are now available for core and winding construction. Powerful computers now make it possible to produce more detailed models of the electrical, mechanical and thermal behavior of transformers than previously possible. Although many of these modern approaches to design and construction are found scattered in the literature, there is a need to have this information available in a single source as a reference for the designer or power engineer and as a starting point for the student or novice. It is hoped that the present work can serve both purposes. As a text for beginners, we emphasize the physical basis of transformer operation. We also discuss the physical effects which result from various fault conditions and their implications for design. Physical principles and mathematical techniques are presented in a reasonably self-contained manner, although references are provided to additional material. For the specialist such as a power or transformer design engineer, detailed models are presented which focus on various aspects of a transformer under normal or abnormal conditions. Cost minimization techniques, which form the starting point for most designs, are also presented
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