DEVICE FOR ESTIMATING TEMPERATURE OF MAGNET

To provide a device for estimating the temperature of a magnet that can precisely estimate the temperature of a permanent magnet by using a detected value of a temperature sensor arranged near a motor.SOLUTION: Estimation mapping data 64b defines an estimation mapping which outputs an estimated valu...

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Bibliographic Details
Main Authors NISHIMURA TOMOTAKA, HONDA TAKUMU, TOZAWA HIDEAKI
Format Patent
LanguageEnglish
Japanese
Published 01.06.2023
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Summary:To provide a device for estimating the temperature of a magnet that can precisely estimate the temperature of a permanent magnet by using a detected value of a temperature sensor arranged near a motor.SOLUTION: Estimation mapping data 64b defines an estimation mapping which outputs an estimated value of the temperature of a permanent magnet 44 of a second motor modulator 40. The estimation mapping is a learned model. A PU62 calculates the average value of a stator temperature Tst detected by a stator temperature sensor 70. The PU62 calculates the estimated value of the temperature of the permanent magnet 44 by inputting the torque and the rate of rotation of the second motor generator 40 and the average value into the estimation mapping.SELECTED DRAWING: Figure 1 【課題】モータ付近に配置された温度センサの検出値を用いて永久磁石の温度を高精度に推定できるようにした磁石温度の推定装置を提供する。【解決手段】推定写像データ64bは、第2モータジェネレータ40の永久磁石44の温度の推定値を出力する推定写像を規定する。推定写像は、学習済みモデルである。PU62は、ステータ温度センサ70によって検出されるステータ温度Tstの平均値を算出する。そしてPU62は、第2モータジェネレータ40のトルク、回転速度等とともに、上記平均値を推定写像に入力することによって、永久磁石44の温度の推定値を算出する。【選択図】図1
Bibliography:Application Number: JP20210189324