Driving controller for a vehicle
AssigneeNissan Motor Co., Ltd.
InventorToshiro Matsuda
Life of this patent
Estimating the term…
Abstract
A type of driving controller for a vehicle that makes use of a combination of a generator and an AC motor to perform stable motor torque control. Target output electric power that should be output from the generator is computed on the basis of the motor's necessary electric power, and the generator is controlled at the operating point where the torque instruction value computed on the basis of the target output electric power can be generated at good efficiency. Also, the torque instruction value of the motor is computed on the basis of present output voltage and output current of the generator, and the motor is controlled on the basis of the torque instruction value.
Claims28
A driving force controller for a vehicle having first driving wheels and second driving wheels, comprising:
- a engine for driving the first driving wheels;
- a generator driven by the engine;
- an AC motor for receiving power generated by the generator and driving the second driving wheels;
- an inverter between the generator and the AC motor;
- and
- means for computing a motor's necessary electric power needed for the AC motor;
- means for controlling the generator based on the motor's necessary electric power and the AC motor by controlling the inverter based on an output state of the generator.
A driving force controller for a vehicle having first driving wheels and second driving wheels, comprising:
- an engine for driving the first driving wheels;
- a generator driven by the engine;
- an AC motor for receiving power generated by the generator and driving the second driving wheels;
- an inverter between the generator and the AC motor;
- a motor's necessary electric power computing part operable to compute a motor's necessary electric power needed for the AC motor;
- a generation control part operable to control the generator on the basis of the motor's necessary electric power;
- and
- a motor control part operable to control the AC motor by controlling the inverter on the basis of an output state of the generator.
A method of controlling driving force for a vehicle having first driving wheels and second driving wheels, comprising:
- driving the first driving wheels using an engine;
- driving a generator using the engine;
- driving the second driving wheels using an AC motor receiving power generated by the generator;
- computing a motor's necessary electric power needed for the AC motor;
- controlling the generator based on the motor's necessary electric power;
- and
- controlling the AC motor based on an output state of the generator.
Dependencies are inferred from the claim text.