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Title:
DRIVE UNIT
Document Type and Number:
Japanese Patent JP2010246263
Kind Code:
A
Abstract:

To suppress excessive charge and discharge of batteries by more appropriately adjusting losses consumed by electric motors in restriction of a battery charge.

When a loss increase request of a motor is made, a deviation ΔPb between an I/O power Pb of the battery and an initial power Pini as an I/O power in a point of time when the loss increase request has been made is calculated. When the deviation ΔPb is smaller than a lower limit value PL, a loss line shifted in a d-axis direction is set such that the loss increases (S190, S210). When the deviation ΔPb is larger than an upper-limit value PH, a loss line shifted in a q-axis direction is set such that the loss decreases (S190, S220). An effective value Irms in a d-q coordinates system and a current lead angle θi are set, based on a torque command Tm* as a torque to be outputted from the motor by the set loss line. Based on them, a d-axis current command Id* and a q-axis current command Iq* are set to control an inverter.

COPYRIGHT: (C)2011,JPO&INPIT


Inventors:
SUHAMA MASAYOSHI
HAYASHI KAZUHITO
Application Number:
JP2009092022A
Publication Date:
October 28, 2010
Filing Date:
April 06, 2009
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
H02P27/06; B60L3/00
Attorney, Agent or Firm:
Aitec International Patent Office



 
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