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Title:
MOTOR DRIVE DEVICE
Document Type and Number:
Japanese Patent JP2009183098
Kind Code:
A
Abstract:

To reduce loss, to make battery life longer, and to reduce the capacity of an electric double-layer capacitor (EDLC).

The EDLC 10 is connected in parallel via a step-up and step-down chopper 17 to a battery 8 connected to an AC motor 13 via an inverter 12. A current of the EDLC 10 or the battery 8 is detected and a DC current flowing from the battery 8 to the inverter 12 is detected. Whether it is power running or regeneration is determined from the code of this DC current, and a command value of the battery current is set to power-running side or regeneration side according to the determination result. The command value of the battery current is subtracted from the DC current to calculate a command value of a chopper current. Then, switching the step-up and step-down chopper 17 is controlled so as to make the chopper current reach the command value.


Inventors:
NOMURA MASAKATSU
MIYAMOTO KYOMASA
Application Number:
JP2008020927A
Publication Date:
August 13, 2009
Filing Date:
January 31, 2008
Export Citation:
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Assignee:
MEIDENSHA ELECTRIC MFG CO LTD
International Classes:
H02P3/18; B60L15/20; H02M3/155; H02P3/14
Domestic Patent References:
JPH08308025A1996-11-22
JPH07123609A1995-05-12
JPH10155298A1998-06-09
JP2001320893A2001-11-16
JP2000236679A2000-08-29
Attorney, Agent or Firm:
Go Hashimoto
Uzawa Hidehisa



 
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