Title:
CONTROL SYSTEM FOR REGULATING BUS VOLTAGE FOR AN ELECTRIC SHOVEL
Document Type and Number:
WIPO Patent Application WO/2012/078537
Kind Code:
A3
Abstract:
A control system for regulating a bus voltage used to power an electric shovel. The system includes a controller for controlling motions of the shovel and for providing a measurement of bus voltage of a bus. The system also includes a shunt resistor located in a current path of the bus and a current transducer for providing a current measurement based on current flowing through the shunt resistor. A converter is then used to regulate the bus voltage of the bus in response to the current and voltage measurements. The system may be retrofitted into older generation shovel drive and control systems.
Inventors:
LIU WEIXUAN (US)
BAHAMONDES CLAUDIO (CL)
BAHAMONDES CLAUDIO (CL)
Application Number:
PCT/US2011/063369
Publication Date:
November 01, 2012
Filing Date:
December 06, 2011
Export Citation:
Assignee:
SIEMENS INDUSTRY INC (US)
LIU WEIXUAN (US)
BAHAMONDES CLAUDIO (CL)
LIU WEIXUAN (US)
BAHAMONDES CLAUDIO (CL)
International Classes:
E02F9/20; H02M5/458
Foreign References:
| US7024805B2 | 2006-04-11 | |||
| US5373223A | 1994-12-13 | |||
| US20060119309A1 | 2006-06-08 |
Attorney, Agent or Firm:
RASHIDI-YAZD, Seyed Kaveh E. et al. (170 Wood Avenue SouthIselin, New Jersey, US)
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