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    • 1. 发明专利
    • Brake resistor control
    • 制动电阻控制
    • JP2011254695A
    • 2011-12-15
    • JP2011097126
    • 2011-04-25
    • Deere & Coディーア・アンド・カンパニーDeere And Company
    • VILAR ZIMIN W
    • B60L7/08B60K6/46B60L11/12
    • H02P3/22B60L7/02B60L11/10Y02T10/642Y02T10/70Y02T10/7077
    • PROBLEM TO BE SOLVED: To provide an optimal usage of the electric brake capability from an energy efficiency point of view during, for example, transmission shifting and quick vehicle direction reversals, wherein the prior art PI-based voltage control scheme assisted by hysteretic brake resistor control cannot offer the optimal usage.SOLUTION: An electric drive system 12 comprises a generator 14, a traction motor 16, a brake resistor 18, a bus 20, and a control unit 22. The generator 14, the traction motor 16, and the brake resistor 18 are coupled electrically to the bus 20. The control unit 22 is configured to determine a pulse-width-modulation duty cycle for the brake resistor 18 ("brake duty") and control operation of the brake resistor 18 according to the brake duty, wherein the brake duty can be a value intermediate of constant OFF and constant ON. A method of operating the electric drive system 12 is also disclosed.
    • 要解决的问题:为了在例如变速器换档和快速车辆方向反转期间从能量效率的角度提供电制动能力的最佳使用,其中现有技术的基于PI的电压控制方案由 迟滞制动电阻控制不能提供最佳使用。 解决方案:电驱动系统12包括发电机14,牵引电动机16,制动电阻器18,总线20和控制单元22.发电机14,牵引电动机16和制动电阻器18是 与总线20电连接。控制单元22被配置为根据制动负载确定制动电阻器18的“脉冲宽度调制占空比”(“制动负载”)和制动电阻器18的控制操作,其中, 制动负载可以是常数OFF和常数ON之间的值。 还公开了一种操作电驱动系统12的方法。 版权所有(C)2012,JPO&INPIT