PROBLEM TO BE SOLVED: To solve such a problem that an electric motor cannot be driven efficiently, for controlling so that discomfort does not occur in the driving force, even in a state where the temperature of the electric motor is low.SOLUTION: When the electric motor temperature Tm is lower than a threshold in step S15, the process proceeds to step S17, and determines whether or not the coolant temperature Tw is below a threshold Lw. When the coolant temperature Tw is low, the outdoor air temperature Ta, the coolant temperature Tw and the electric motor temperature Tm are all below a predetermined threshold, and a determination is made that it is required to raise the temperature of the electric motor 2, and temperature rise mode control is executed in step S18. When a determination is made that the coolant temperature Tw is low in step S19, the process branches to step S20. In step S20, a determination is made whether or not the electric motor temperature Tm is below a predetermined threshold Lm, and if it is below a predetermined threshold, the process proceeds to step S22, and temperature rise mode control is executed.SELECTED DRAWING: Figure 5
【課題】電動機の温度が低い状態でも駆動力に違和感が生じないよう制御するためには、電動機を効率良く駆動することができない。【解決手段】処理S15で電動機温度Tmがしきい値Lmより低い場合は処理S17に進み、冷媒温度Twがしきい値Lw以下であるかどうかを判断する。冷媒温度Twが低い場合は外気温度Ta、冷媒温度Tw、電動機温度Tmが全て所定のしきい値より低い状態であるので電動機2の昇温が必要と判断し、処理S18で昇温モード制御を実行する。処理S19で冷媒温度Twが低いと判断される場合は処理S20に分岐する。処理S20では電動機温度Tmが所定のしきい値Lm以下かどうかを判断し、低い場合には処理S22に進み、昇温モード制御を実行する。【選択図】 図5
ELECTRIC MOTOR CONTROLLER
電動機制御装置
2017-01-05
Patent
Electronic Resource
Japanese
IPC: | H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |