Transformer Winding Design REV 04 111309（变压器绕组设计转速111309年04）.pdf

    Transformer Winding Design  The Design and Performance of Circular Disc, Helical and Layer Windings for  Power Transformer Applications    Minnesota Power Systems Conference  November 3‐5, 2009  Earl Brown Heritage Center  University of Minnesota          Author and Presenter:  David L. Harris, P.E.   Customer Technical Executive  Waukesha Electric Systems        Transformer Winding Design The Design and Performance of Circular Disc, Helical and Layer Windings for Power Transformer Applications Winding design and manufacturing practices for power and distribution transformers has focused in the differences between rectangular core and coils and layer windings common in the production of distribution transformers and disc and helical windings and circular core designs common in power transformers. In the small power transformer market defined as 5-15 MVA, ONAN, with primary winding voltages up through 69 kV class, both core and coil designs are commercially available. Rectangular core and coils and layer windings offer the advantage of lower costs for manufacturing compared to power class circular core and coils with disc and h