Motor control device, motored vehicle equipped therewith, and method of controlling a motor
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKeiji Takizawa, Hiroshi Aihara
Life of this patent
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Abstract
When a torque control value (TR) is larger than a threshold value and vehicular speed (SV) is lower than a threshold value an upper temperature limit setting unit sets the upper temperature limit of a motor generator at an upper temperature limit (TS2) higher than a normally set upper temperature limit (TS1). A torque limitation control controls limiting a torque of the motor generator, as based on a motor temperature (T) and the upper temperature limit set by the upper temperature limit setting unit.
Claims25
A motor control device controlling a motor generating a force driving a vehicle, comprising:
- temperature detection means for detecting a temperature of said motor;
- torque limitation means for limiting a torque of said motor, as based on the temperature detected by said temperature detection means and a set upper temperature limit of said motor;
- and
- setting means for determining the upper temperature limit of said motor, as based on a state of said vehicle, and setting the determined upper temperature limit in said torque limitation means.
A motor control device controlling a motor generating a force driving a vehicle, comprising:
- temperature detection means for detecting a temperature of said motor;
- torque limitation means for limiting a torque of said motor, as based on the temperature detected by said temperature detection means and an upper temperature limit of said motor, at a set reduction rate per unit time;
- and
- setting means for determining said reduction rate, as based on a state of said vehicle, and setting the determined reduction rate in said torque limitation means.
A motor control device controlling a motor generating a force driving a vehicle, comprising:
- a temperature detection unit detecting a temperature of said motor;
- and
- a controller performing a series of steps,
- said controller determining an upper temperature limit of said motor, as based on a state of said vehicle, and limiting a torque of said motor, as based on the temperature detected by said temperature detection unit and said upper temperature limit.
A motor control device controlling a motor generating a force driving a vehicle, comprising:
- a temperature detection unit detecting a temperature of said motor;
- and
- a controller performing a series of steps,
- said controller determining a reduction rate per unit time of a torque of said motor, as based on a state of said vehicle, and limiting at the determined reduction rate the torque of said motor, as based on the temperature detected by said temperature detection unit and an upper temperature limit of said motor.
A method of controlling a motor generating a force driving a vehicle, comprising the steps of:
- determining an upper temperature limit of said motor, as based on a state of said vehicle;
- and
- limiting a torque of said motor, as based on a temperature of said motor as detected and said upper temperature limit.
Dependencies are inferred from the claim text.