发明授权
- 专利标题: Over-voltage and under-voltage management for electric drive system
- 专利标题(中): 电力驱动系统的过电压和欠压管理
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申请号: US12210881申请日: 2008-09-15
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公开(公告)号: US07795825B2公开(公告)日: 2010-09-14
- 发明人: Joshua Williams
- 申请人: Joshua Williams
- 申请人地址: US IL Peoria
- 专利权人: Caterpillar Inc
- 当前专利权人: Caterpillar Inc
- 当前专利权人地址: US IL Peoria
- 代理机构: Leydig, Voit & Mayer
- 主分类号: H02P7/00
- IPC分类号: H02P7/00
摘要:
A method of voltage supply management for an electric drive system includes receiving a voltage signal (1002) indicative of a voltage in a supply link, and one or more condition signals that are indicative of an operating condition of the electric drive system. A difference between a desired voltage value (1008), which is calculated based on the voltage signal (1002) and the one or more condition signals, and the voltage signal (1002) yields a voltage error signal (1014). The voltage error signal (1014) is evaluated to indicate an over-voltage condition or an under-voltage condition. Power is dissipated from the supply link when an over-voltage condition is present and a torque command limit with respect to the one or more electric drive motors (210) is imposed when an under-voltage condition is present.
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