The PDF file you selected should load here if your Web browser has a PDF reader plug-in installed (for example, a recent version of Adobe Acrobat Reader).

If you would like more information about how to print, save, and work with PDFs, Highwire Press provides a helpful Frequently Asked Questions about PDFs.

Alternatively, you can download the PDF file directly to your computer, from where it can be opened using a PDF reader. To download the PDF, click the Download link above.

Fullscreen Fullscreen Off

Background / Objective: Present study deals with the optimization of 6.6 MVA 66/11.5 KV transformer tank using Design Of Experiments (DOE) concepts such as Screening Methodology, Central Composite Design (CCD) and Response Surface Methodology (RSM). Objective is to reduce the weight of the transformer tank. Methods / Analysis: To achieve objective mentioned above individual wall analysis and optimization approach was used to reduce complexity and time requirement. In fact DOE simplified the number of FEA simulations. Screening Methodology is used for filter out the parameters or design variables which are not necessary for optimization. CCD technique helps to create quadratic model for response or objective variable and hence preparation of DOE matrix. Response surface was generated from the resulted DOE matrix to obtain optimum design point. Findings: Individual wall analysis is found time saving and verified with whole analysis. Approximately 15% reduction in weight of the wall resulted from the study. Same approach can be used for other walls of the transformer to get optimization of whole tank. Also methodology can be used to study different stiffener arrangement of the tank wall to get optimum response such as weight, stresses and deformation.


Central Composite Design, Design of Experiments, Finite Element Analysis, Optimization, Response Surface Methodology, Tank, Transformer.