An electric working machine includes an electric motor to use electric power received from a battery via an inverter to drive a hydraulic pump to deliver hydraulic fluid to actuate a hydraulic device. A controller to control driving of the inverter and the electric motor is configured or programmed to gradually increase a rotation speed of the electric motor such that the rotation speed of the electric motor reaches a target rotation speed in a longer time when the electric motor is started in a state in which a temperature of hydraulic fluid detected by a fluid temperature detector is lower than or equal to a predetermined temperature than when the electric motor is started in a state in which the temperature of hydraulic fluid is higher than the predetermined temperature.
ELECTRIC WORKING MACHINE
2025-01-09
Patent
Electronic Resource
English
IPC: | E02F Baggern , DREDGING / 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 / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein |
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