Motor control device for estimating temperature of windings, and method for calculating allowable duty cycle time for machine
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United States of America Patent
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Mar 6, 2018
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N/A
app pub date -
Jun 22, 2016
filing date -
Jul 9, 2015
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Abstract
A motor control device according to this invention includes a correction unit which calculates a correction coefficient for correcting the temperature of windings, based on the result of a comparison between a winding estimated temperature rise profile representing the temperature of the windings estimated by a winding temperature estimation unit and a winding actual temperature rise profile representing the temperature of the windings measured by a temperature sensor, when a motor as attached to a machine is rotated at a predetermined rotational speed, to match the winding estimated temperature rise profile with the winding actual temperature rise profile, and corrects a temperature rise estimation arithmetic expression using the correction coefficient.
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