The invention discloses a start-stop control system of an electric hydraulic excavator. The system comprises an electric control cabinet, a high-voltage motor and a cab control system, wherein a high-voltage power supply is sent into the electric control cabinet through an external power supply station, and the electric control cabinet transmits the high-voltage power supply to the high-voltage motor. The electric control cabinet comprises a main circuit and a control circuit. In the main circuit, one end of a high-voltage isolation switch is connected with a high-voltage fuse I and a high-voltage fuse II, the high-voltage fuse I is sequentially connected with a main contactor, a bypass contactor and a current transformer in series, high-voltage electric energy is sent to a high-voltage motor, and the bypass contactor is connected with a starting reactor in parallel. The high-voltage fuse II is connected with a step-down circuit, the step-down circuit is divided into three paths of power supplies of DC24V, AC220V and AC380V, the AC380V power supply is connected with a detection circuit, and the detection circuit comprises a voltmeter, a voltage sensor, a voltage detector, a motor relay, an ampere meter and a temperature controller. The control system can effectively improve the operation safety and reliability of the high-voltage motor.
本发明公开了一种电动液压挖掘机起停控制系统,包括电控柜、高压电动机和驾驶室控制系统,通过外部供电站将高压电源送至电控柜内,由电控柜将高压电源输送给高压电动机。电控柜包括主电路和控制电路,在主电路内,高压隔离开关一端接高压熔断器I和高压熔断器II,高压熔断器I依次与主接触器、旁路接触器、电流互感器串联,将高压电能送到高压电动机,旁路接触器与起动电抗器并联。高压熔断器II与降压电路连接,由降压电路分出DC24V、AC220V、AC380V三路电源,其中AC380V电源连接检测电路,检测电路包括电压表、电压传感器、电压检测器、电机继电器、电流表和温度控制器。本控制系统可以有效提高高压电动机运行时的安全性和可靠性。
Start-stop control system of electric hydraulic excavator
一种电动液压挖掘机起停控制系统
2021-06-01
Patent
Elektronische Ressource
Chinesisch
IPC: | E02F Baggern , DREDGING / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
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