System and method for monitoring temperature of rotating electric machine

• Main Authors: Tounosu, Shigeki, Iwashige, Kengo
• Format: Patent
• Language: English
• Published: 19.04.2022
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

A system and method for monitoring temperature and detecting a temperature rise of a rotating electric machine with high accuracy. A temperature monitoring system for a rotating electric machine includes: sensor data storage that stores values measured by an in-coil temperature sensor and a physical quantity sensor in the rotating electric machine; an in-machine temperature predictor that predicts a temperature by use of the value measured by the physical quantity sensor; a strand temperature calculator that calculates a relationship between a temperature of the strand and a temperature measured by the in-coil temperature sensor, based on the predicted temperature; and a strand temperature predictor that predicts a temperature of the strand from the value measured by the in-coil temperature sensor, and from the relationship between a temperature of the strand and a temperature measured by the in-coil temperature sensor calculated by the strand temperature calculator.