PROBLEM TO BE SOLVED: To hinder an increase in energy loss in a rotary electric machine, in a cooling device for a rotary electric machine in which one of a rotor and a stator is provided with a conductor for generating a magnetic flux by causing a current to flow, and the other is provided with a permanent magnet.SOLUTION: A cooling device for a rotary electric machine 10 in which rotor 11 is provided with a permanent magnet 12 and a stator 13 is provided with an armature coil 14, comprises: a first cooling passage 51 configured to cool the armature coil 14 with coolant; a second cooling passage 52, different from the first cooling passage 51, configured to cool the permanent magnet 12 with coolant; and a control device 30 configured to exert control such that, on condition that an iron damage on the rotary electric machine 10 is greater than a determination value, a second flow rate, which is a flow rate of the coolant flowing in the second cooling passage 52, is decreased.SELECTED DRAWING: Figure 3
【課題】回転子及び固定子のいずれか一方に電流が流れることで磁束を発生させる導体が設けられ、他方に永久磁石が設けられた回転電機の冷却装置において、回転電機に生じるエネルギー損失の増加を抑制する。【解決手段】ロータ11に永久磁石12、ステータ13に電機子巻線14がそれぞれ設けられた回転電機10の冷却装置であって、電機子巻線14を冷媒によって冷却する第1冷却経路51と、永久磁石12を冷媒によって冷却する、第1冷却経路51と異なる第2冷却経路52と、回転電機10に生じる鉄損が判定値より大きいことを条件として、第2冷却経路52に流れる冷媒の流量である第2流量を減少させる制御を実施する制御装置30と、を備えることを特徴とする。【選択図】 図3
COOLING DEVICE FOR ROTARY ELECTRIC MACHINE
回転電機の冷却装置
2017-12-28
Patent
Electronic Resource
Japanese
COOLING SYSTEM OF ROTARY ELECTRIC MACHINE AND COOLING METHOD OF ROTARY ELECTRIC MACHINE
European Patent Office | 2019
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