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    • 9. 发明授权
    • Electric drive unit for construction machine
    • 建筑机械电动机组
    • US09187880B2
    • 2015-11-17
    • US14113921
    • 2012-05-10
    • Yasutaka TsurugaKiwamu TakahashiTatsuo TakishitaHajime Kurikuma
    • Yasutaka TsurugaKiwamu TakahashiTatsuo TakishitaHajime Kurikuma
    • E02F3/22E02F9/20E02F3/30E02F9/22E02F3/32
    • E02F9/2296E02F3/325E02F9/207E02F9/2091E02F9/2217
    • An electric drive unit for a construction machine is capable of increasing the operating time of the construction machine. The electric drive unit has an electricity storage device, a hydraulic pump of variable displacement type which is driven by a motor/generator, a regulator which performs variable control on the displacement volume of the hydraulic pump, a bidirectional converter which performs variable control on the revolution speed of the motor/generator, and an LS control device which controls the regulator and the bidirectional converter so that LS differential pressure Pls equals a target value Pgr. The bidirectional converter performs regeneration control for converting the inertial force of the rotor of the motor/generator into electric power thereby charging the electricity storage device when the revolution speed of the motor/generator is decreased in response to an excess of the LS differential pressure Pls over the target value Pgr.
    • 用于建筑机械的电驱动单元能够增加施工机械的操作时间。 电驱动单元具有蓄电装置,由电动机/发电机驱动的可变排量型液压泵,对液压泵的排量进行可变控制的调节器,对该液压泵进行变量控制的双向转换器 马达/发电机的转速以及控制调节器和双向转换器的LS控制装置,使得LS压差P1s等于目标值Pgr。 双向转换器执行用于将电动机/发电机的转子的惯性力转换成电力的再生控制,从而当电动机/发电机的转速响应于LS压差P1s过大而减小时对蓄电装置充电 超过目标值Pgr。
    • 10. 发明申请
    • ELECTRIC DRIVE UNIT FOR CONSTRUCTION MACHINE
    • 建筑机械电驱动装置
    • US20140052350A1
    • 2014-02-20
    • US14113921
    • 2012-05-10
    • Yasutaka TsurugaKiwamu TakahashiTatsuo TakishitaHajime Kurikuma
    • Yasutaka TsurugaKiwamu TakahashiTatsuo TakishitaHajime Kurikuma
    • E02F9/22
    • E02F9/2296E02F3/325E02F9/207E02F9/2091E02F9/2217
    • An electric drive unit for a construction machine is capable of increasing the operating time of the construction machine. The electric drive unit has an electricity storage device, a hydraulic pump of variable displacement type which is driven by a motor/generator, a regulator which performs variable control on the displacement volume of the hydraulic pump, a bidirectional converter which performs variable control on the revolution speed of the motor/generator, and an LS control device which controls the regulator and the bidirectional converter so that LS differential pressure Pls equals a target value Pgr. The bidirectional converter performs regeneration control for converting the inertial force of the rotor of the motor/generator into electric power thereby charging the electricity storage device when the revolution speed of the motor/generator is decreased in response to an excess of the LS differential pressure Pls over the target value Pgr.
    • 用于建筑机械的电驱动单元能够增加施工机械的操作时间。 电驱动单元具有蓄电装置,由电动机/发电机驱动的可变排量型液压泵,对液压泵的排量进行可变控制的调节器,对该液压泵进行变量控制的双向转换器 马达/发电机的转速以及控制调节器和双向转换器的LS控制装置,使得LS压差P1s等于目标值Pgr。 双向转换器执行用于将电动机/发电机的转子的惯性力转换成电力的再生控制,从而当电动机/发电机的转速响应于LS压差P1s过大而减小时对蓄电装置充电 超过目标值Pgr。