Rotating electric machine winding temperature estimation device and rotating electric machine winding temperature estimation method
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United States of America Patent
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May 1, 2018
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app pub date -
Jun 25, 2015
filing date -
Jun 27, 2014
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Abstract
A winding temperature estimation device for a rotating electric machine includes a rotating electric machine including a stator, which has a winding, and a rotor, a coolant supply part configured to supply a coolant, a temperature sensor configured to detect a temperature of the coolant, a heat reduction amount calculation part configured to calculate a heat reduction amount of the winding using the temperature of the coolant and a heat resistance between the coolant and the winding, a heating value calculation part configured to calculate a heating value due to a loss of the winding, and a winding temperature calculation part configured to calculate a temperature of the winding using the heat reduction amount from the winding and the heating value due to the loss of the winding.
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