VEHICLE CONTROL DEVICE, VEHICLE, AND VEHICLE CONTROL METHOD

Title:

VEHICLE CONTROL DEVICE, VEHICLE, AND VEHICLE CONTROL METHOD

Document Type and Number:

WIPO Patent Application WO/2007/018321

Kind Code:

A1

Abstract:

A vehicle control device includes a motor for driving wheels, an inverter for driving the motor, and boost converter for supplying DC power voltage to the inverter. The vehicle control device further includes a control unit for switching between a square wave control and non-square wave control for the inverter. The control unit has, an emergency switching condition, as one of the judgment references, for switching control from the square wave control to an excessive modulation control according to the current flowing from the inverter to the motor. When an emergency switching condition is satisfied during the square wave control execution (YES in step S5), the control unit instructs the boost converter to lower the target output voltage (S7). It is preferable that the control unit judge that the emergency switching condition is satisfied when the q-axis current supplied from the inverter to the motor exceeds a predetermined threshold value.

Inventors:

HANADA HIDETO (JP)
YOKOYAMA SOJIRO (JP)

Application Number:

PCT/JP2006/317160

Publication Date:

February 15, 2007

Filing Date:

August 24, 2006

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
HANADA HIDETO (JP)
YOKOYAMA SOJIRO (JP)

International Classes:

B60L9/18; B60L50/15; B60L50/16; H02P27/06

Foreign References:

JP2005253207A	2005-09-15
JP2003244990A	2003-08-29
JP2005155862A	2005-06-16
JP2005094837A	2005-04-07
JP2005204425A	2005-07-28
JPS6412816A	1989-01-17
JP2001295676A	2001-10-26

Other References: