To provide a motor control device that can suitably actuate a motor when temperatures are high.SOLUTION: An integrated valve ECU 27 serving as a motor control device comprises a control unit 27a that controls a motor 26, which is a drive source for an integrated valve device 24 in a refrigeration cycle device. By controlling the integrated valve device 24 through the motor 26, this ECU switches a flow of a coolant in accordance with a drive mode of the refrigeration cycle device. The control unit 27a performs: an overheat protection process in which supply of power to the motor 26 is stopped when the own temperature reaches a first threshold; and a high temperature process in which the value of a drive electric current supplied to the motor 26 is decreased when the own temperature reaches a second threshold smaller than the first threshold.SELECTED DRAWING: Figure 2
【課題】高温時における好適なモータの作動を実現できるモータ制御装置を提供する。【解決手段】モータ制御装置としての統合弁ECU27は、冷凍サイクル装置における統合弁装置24の駆動源であるモータ26を制御する制御部27aを備え、モータ26を通じた統合弁装置24の制御によって、冷凍サイクル装置の駆動モードに応じた冷媒の流れの切り替えを行う。そして、制御部27aは、自身の温度が第1閾値に達したときにモータ26への通電を停止させる過熱保護処理と、自身の温度が前記第1閾値よりも小さい第2閾値に達したときにモータ26に供給する駆動電流の電流値を低下させる高温時処理とを行う。【選択図】図2
MOTOR CONTROL DEVICE, INTEGRATED VALVE DEVICE AND HEAT EXCHANGER
モータ制御装置、統合弁装置及び熱交換器
2020-02-06
Patent
Elektronische Ressource
Japanisch
IPC: | B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS |
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