The digital computer applied to the design of large power transformers

The paper describes an extensive investigation into the design of transformers with the aid of a high-speed digital computer. A general programme has been developed covering a range of transformers from 30 to 210 MVA, and has been tested for a wide range of designs within these limits. The subdivision of the process of design and its translation into a form suitable for a digital computer are described. Basic details of particular sub-routines are given to illustrate the problems of logic and arithmetic encountered. The techniques needed to control the design process within the computer are discussed, with special reference to the organization of data. A detailed description and derivation are given of the method used to obtain convergence to specified design characteristics without intervention by a designer. The results of several investigations concerned with the effect of changes to certain design parameters are included.