Vehicle equipped with motor and inverter

Details Vehicle equipped with motor and inverter Vehicle equipped with motor and inverter

2011-04-12

2011-04-12

Duda, Rina I (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S599000

Reexamination Certificate

active

07923961

ABSTRACT:
A vehicle includes a motor for driving wheels WH, an inverter to drive the motor, and a control device to perform PWM control of the inverter. The control device performs synchronous PWM control in a case where an electric current supplied to the motor by the inverter or torque generated in the motor is larger than a threshold value; and performs the synchronous PWM control or non-synchronous PWM control in a case where the electric current or the torque is smaller than the threshold value and sets carrier frequency or a pulse number of the PWM control to be higher than the case where the electric current or the torque is larger than the threshold value. Thereby, it is possible to provide a vehicle of achieving reduction of noise, reduction of cost and improvement of fuel consumption in a balanced manner.

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patent: 6274942 (2001-08-01), Pels
patent: 7049779 (2006-05-01), Chen et al.
patent: 2004/0140139 (2004-07-01), Malik
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patent: A-2007-282298 (2007-10-01), None
Jun. 8, 2010 Office Action issued in Japanese Patent Application No. 218166/2008 (with partial English translation).

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