Title:
MOTOR DRIVING SYSTEM AND METHOD FOR CONTROLLING THE SAME
Document Type and Number:
WIPO Patent Application WO/2008/018157
Kind Code:
A1
Abstract:
A plurality of current sensors (41,42,51,52,61,62) are provided which are associated with a plurality of inverter circuits (40,50,60) that drive a plurality of motor generators (MG1,MG2,MGR), respectively. The zero adjustment of each current sensor is executed, during a nonconductive state that is identified by a halt of operation of the associated inverter circuit, if it is determined that noise affection is small due to the halt of operation of the other inverter circuits in the same casing (105). As a result, this can avoid a risk of performing a zero adjustment during a state in which the output of a current sensor exhibits no correct value corresponding to the zero current due to the noise affection by other inverter circuits. In this way, the zero adjustment of each current sensor for measuring a motor drive current can be implemented with high precision.
Inventors:
HANADA HIDETO (JP)
OYANAGI HIROYUKI (JP)
OYANAGI HIROYUKI (JP)
Application Number:
PCT/JP2006/316132
Publication Date:
February 14, 2008
Filing Date:
August 10, 2006
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
HANADA HIDETO (JP)
OYANAGI HIROYUKI (JP)
HANADA HIDETO (JP)
OYANAGI HIROYUKI (JP)
International Classes:
H02P5/74
Foreign References:
| JPH08256499A | 1996-10-01 | |||
| JP2006115664A | 2006-04-27 | |||
| JPH1080172A | 1998-03-24 | |||
| JP2004191301A | 2004-07-08 |
Other References:
See also references of EP 2051367A4
Attorney, Agent or Firm:
FUKAMI, Hisao et al. (Nakanoshima Central Tower 22nd Floor,2-7, Nakanoshima 2-chome, Kita-k, Osaka-shi Osaka 05, JP)
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