OPTIMIZED DESIGNING METHOD OF TRANSFORMER FOR SWITCHING POWER-SUPPLIES FROM THE VIEW OF LOSS ESTIMATION - (DISCUSSION BASED ON SIMULATIONS)

To establish a design method for an economically optimum shaped transf ormer for a switching power supply, the dimensions, capacity, and pric e of a transformer are studied taking into account iron loss, copper l oss, cooling condition, and limited temperature rise as design paramet ers. It is found that the economical shape of the transformer designed by the proposed method has a longer window and a much shallower depth than conventionally designed ones. Design parameters for a simple des ign of an optimum transformer were discovered during the research proc ess; a simple design method based on these parameters is introduced he re.