Application of geometric programming to transformer design | IEEE Journals & Magazine | IEEE Xplore

Application of geometric programming to transformer design


Abstract:

This paper considers the transformer design optimization problem. In its most general form, the design problem requires minimizing the total mass (or cost) of the core an...Show More

Abstract:

This paper considers the transformer design optimization problem. In its most general form, the design problem requires minimizing the total mass (or cost) of the core and wire material while ensuring the satisfaction of the transformer ratings and a number of design constraints. The constraints include appropriate limits on efficiency, voltage regulation, temperature rise, no-load current, and winding fill factor. The design optimization seeks a constrained minimum mass (or cost) solution by optimally setting the transformer geometry parameters and the relevant electrical and magnetic quantities. In cases where the core dimensions are fixed, the optimization problem calls for a constrained maximum volt-ampere or minimum loss solution. This paper shows that the above design problems can be formulated in geometric programming (GP) format. The importance of the GP format stems from two main features. First, GP provides an efficient and reliable solution for the design optimization problem with several variables. Second, it guarantees that the obtained solution is the global optimum. The paper includes a demonstration of the application of the GP technique to transformer design. It also includes a comparative study to emphasize the advantage of including the transformer core dimensions as variables in the design problem.
Published in: IEEE Transactions on Magnetics ( Volume: 41, Issue: 11, November 2005)
Page(s): 4261 - 4269
Date of Publication: 14 November 2005

ISSN Information:


I. Introduction

The transformer is a device fundamentally based on Faraday's law of induction. Its design requires knowledge of electromagnetism, magnetic circuit analysis, electric circuit analysis, loss mechanisms, and heat transfer. Initially, transformers were designed for low-frequency bulk power transmission and distribution. Indeed, the power transformer is one of the main reasons for the widespread use of ac power systems. With the advent of power electronic converters operating at ever increasing frequencies, the need for high-frequency transformers emerged. Thus, the transformer design problem remained an active research area.

References

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