A CAD integrated system for epoxy resin casting dry type transformers

A CAD integrated system for epoxy resin casting dry type transformers is described in the paper. Electromagnetism calculation module, parameterized automatic generating drawing paper module and engineering database module are combined in the CAD integrated system. The electromagnetism calculation module includes optimum design for core sectional area, synthesis design, analogy design, and optimum design for complete transformer. The CAD system is supported by engineering database, which combines design parameters, design criterion, designed schemes, and so on. Not only the new schemes can be designed, but also the designed schemes can be regulated artificially by analogy design module and further improved by optimum design module which is based on GA algorithm. Because the technique of the die arrangement of the transformers is intricate and the cost of it is high, the transformer can be designed automatically with the die arrangement existed. Applying the CAD system, the transformer can be designed automatically, the material cost is reduced, and the design cycle is shortened.