Parameter calculation device, parameter calculation method, and program

Abstract

To suppress the increase in the number of times of magnetic field analyses when a change in temperature of a rotor has a relatively large width when using the magnetic field analysis to calculate parameters of an induction motor.SOLUTION: A parameter calculation device 1 includes a map creating unit 2 that creates a parameter map showing the correspondence between a parameter of an induction motor obtained on the basis of the stator current and a sliding angular frequency and a sliding angular frequency secondary resistance rate ωs / Rr, which is a value obtained by dividing a sliding angular frequency ωs by a secondary resistance Rr, or the sliding angular frequency ωs, and a parameter calculation unit 3 that calculates by referring to the parameter map a parameter corresponding to a stator current and a sliding angular frequency secondary resistance ratio ωs / Rr', which is a value obtained by dividing the sliding angular frequency ωs by a secondary resistance Rr' after the change, or a sliding angular frequency variation rate ωs / A, which is a value obtained by dividing the sliding angular frequency ωs by a variation rate A of the secondary resistance Rr' after the change to the secondary resistance Rr before the change.SELECTED DRAWING: Figure 1

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