SPECIFICATION DETERMINATION ASSISTANCE METHOD FOR ALTERNATING CURRENT WIRE AND SPECIFICATION DETERMINATION ASSISTANCE DEVICE, AS WELL AS SPECIFICATION DETERMINATION ASSISTANCE PROGRAM

摘要

PROBLEM TO BE SOLVED: To assist determination of specification of an electrical wire through which a large alternating current needs to flow, without any expensive simulation device and without taking a long time for calculation processing.SOLUTION: The method includes: an input step S10 of inputting a cross-sectional area of an entire electrical wire and the frequency for the conditions in which the wire is to be used as known parameters of an electrical wire specification; and a calculation step S20 of acquiring a strand diameter of a Litz wire, which is an unknown parameter, on the basis of a specific frequency determined on the basis of an upper-bound frequency representing an upper bound of a range for which the Litz wire of each strand diameter has an advantage with respect to a single wire, and the cross-sectional area and the frequency which have been input as the known parameters. On the basis of a predetermined approximation formula representing relation among the strand diameter, the electrical wire cross-sectional area and the upper-bound frequency, the optimal strand diameter is obtained by calculation or by utilizing data resulting form the calculation.