PROBLEM TO BE SOLVED: To restrict damage of a switching element of an inverter of an electric compressor caused by stoppage of the electric compressor under a rapid variation of voltage of a vehicle battery while restricting a rapid variation of speed of an on-vehicle electric compressor.SOLUTION: A control part for driving and controlling an electric motor arranged at an on-vehicle electric compressor has an upper limit value of increasing rate of speed of the electric motor per time and an upper limit value of decreasing rate of speed of the electric motor per time, drives and controls the electric motor in such a way that a target speed is set and the speed of the electric motor may become the target speed. The control part varies the speed of the electric motor under the increasing rate less than the upper limit value of the increasing rate or under the decreasing rate less than the upper limit value of the decreasing rate when the speed of the electric motor requested by another control part is set to the target speed. When the speed limit value determined in response to the voltage value of the vehicle battery is set to the target speed, the speed of the electric motor is decreased at the decreasing rate exceeding the upper limit value of the decreasing rate as required.SELECTED DRAWING: Figure 2
【課題】車載用電動圧縮機の回転数の急峻な変動を抑えながら、車両バッテリの電圧の急変動時の電動圧縮機の停止による電動圧縮機のインバータのスイッチング素子の破壊を抑制する。【解決手段】車載用電動圧縮機に設けられた電動モータを駆動制御する制御部は、時間当たりの電動モータの回転数の上昇率の上限値及び時間当たりの電動モータの回転数の下降率の上限値を有すとともに、目標回転数を設定し電動モータの回転数が目標回転数となるように電動モータを駆動制御する。前記制御部は、他の制御部から要求された電動モータの回転数を目標回転数に設定した場合、前記上昇率の上限値以下の上昇率又は前記下降率の上限値以下の下降率で電動モータの回転数を変動させる。車両バッテリの電圧値に応じて決められる回転数制限値を前記目標回転数に設定した場合、必要に応じて前記下降率の上限値を超える下降率で前記電動モータの回転数を下げる。【選択図】図2
ON-VEHICLE ELECTRIC COMPRESSOR CONTROLLING METHOD
車載用電動圧縮機の制御方法
2017-10-05
Patent
Electronic Resource
Japanese
IPC: | F04B Verdrängerkraft- und Verdrängerarbeitsmaschinen für Flüssigkeiten , POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS / 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 / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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