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US 8,076,874 B2Granted
On-vehicle actuator system
AssigneeHitachi, Ltd.
InventorsKentaro Ueno, Mitsuhide Sasaki, Toshiyuki Innami
Life of this patent
Estimating the term…
Abstract
A motor is controlled to always consume power supplied from a power supply system or not to supply power to the power supply system, by performing control to advance or delay a phase of a 3-phase current flowing in the motor or to reduce a percentage of the generated torque with respect to an effective value of the 3-phase current of the motor, or by applying a d-axis current to the motor.
Claims15
An on-vehicle actuator system comprising:
- a motor that is driven by a 3-phase current, and is operable as an electric generator or a regenerative device;
- an inverter circuit having switching devices to drive the motor;
- a power supply system connected to the inverter circuit to supply electricity to the motor and the inverter circuit;
- and
- a control unit to control a current or voltage applied to the motor by controlling an operation of the switching devices;
- wherein the control unit controls the motor by operating the switching devices in such a manner that the motor never supplies electricity to the power supply system.
3 more elements
An on-vehicle actuator system comprising:
- a motor that is driven by a 3-phase current, and is operable as an electric generator or a regenerative device;
- an inverter circuit having switching devices to drive the motor;
- a power supply system connected to the inverter circuit to supply electricity to the motor and the inverter circuit;
- and
- a control unit to control a current or voltage applied to the motor by controlling an operation of the switching devices;
- wherein the control unit controls the motor by operating the switching devices in such a manner that the motor never generates or regenerates power at all.
3 more elements
An on-vehicle actuator system comprising:
- a motor that is driven by a 3-phase current, and is operable as an electric generator or a regenerative device;
- an inverter circuit having switching devices to drive the motor;
- a power supply system connected to the inverter circuit to supply electricity to the motor and the inverter circuit;
- and
- a control unit to control a current or voltage applied to the motor by controlling an operation of the switching devices;
- wherein the control unit calculates power of the motor and controls the motor by operating the switching devices in such a manner that the motor consumes power at all times in that its power consumption never becomes negative.
3 more elements
Dependencies are inferred from the claim text.