Title:
発電電動機駆動装置および発電電動機駆動装置のキャパシタの電荷の放電方法
Document Type and Number:
Japanese Patent JP4852644
Kind Code:
B2
Abstract:
The present invention provides a generator motor driving device that can promptly perform discharging of charges from the capacitor during a maintenance operation, and a capacitor discharge method to be implemented in the generator motor driving device. Power is supplied from the capacitor to the generator motor being driven by the engine, and the generator motor is driven, with the engine as a load. Rated constant current control is performed on the generator motor, and rated constant voltage control is performed on the booster, until the capacitor voltage decreases to a first voltage. After the capacitor voltage decreases to the first voltage, the rated constant current control is performed on the generator motor, and voltage control is performed on the booster to maintain a predetermined ratio between the capacitor voltage and the booster output voltage to be output to the driver, until the capacitor voltage decreases to a second voltage that is lower than the first voltage.
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Inventors:
Takayoshi Endo
Tomohisa Sato
Tomohisa Sato
Application Number:
JP2009504084A
Publication Date:
January 11, 2012
Filing Date:
March 13, 2008
Export Citation:
Assignee:
KOMATSU LTD.
International Classes:
B60L3/00; H02J7/00; B60L50/15; B60W10/08; B60W10/26; B60W20/00
Domestic Patent References:
| JP2005218285A | 2005-08-11 | |||
| JP2004357412A | 2004-12-16 | |||
| JP2007195352A | 2007-08-02 |
Attorney, Agent or Firm:
Hiroaki Sakai