Power generation unit, and motor generator control method
AssigneeHonda Motor Co., Ltd.
InventorsKatsuhiro Ouchi, Takeshi Yanagisawa, Yutaka Sonoda, Tatsuya Shiozawa, Atsushi Katayama, Hitoshi Kurosaka
Life of this patent
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Abstract
A power generation unit includes a motor generator having a rotor with magnet, and a stator with coils driven in a plurality of phases, the coils of the respective phases not being connected to each other; and a driving control part that performs control so that a coil of each phase of the stator is brought into any one of a first state in which torque is generated by the rotor, a second state in which both ends of the coil are electrically released, and a third state in which both ends of the coil are short-circuited.
Claims12
A power generation unit that is mounted on a vehicle together with an internal combustion engine that outputs a driving force for traveling and that has a rotor connected with a rotation output shaft of the internal combustion engine, the power generation unit comprising:
- a motor generator having the rotor with a magnet, and a stator with coils driven in three or more phases, the coils of each phase not being connected to each other;
- and
- a driving control part that performs control so that a coil of each phase of the stator is brought into any one of a first state in which torque is generated by the rotor, a second state in which both ends of the coil are disconnected from a vehicle-mounted battery, and a third state in which both ends of the coil are short-circuited,
- wherein the driving control part performs powering control of the motor generator by making a second phase among the three or more phases into the first state when a number of rotations of the rotor is lower than a predetermined number of rotations, makes other coils into the second state or the third state, and reduces a torque applied to the rotation output shaft by the rotor as a number of rotations of the rotation output shaft of the internal combustion engine increases.
A method for controlling a motor generator that is mounted on a vehicle together with an internal combustion engine that outputs a driving force for traveling and that has a rotor connected with a rotation output shaft of the internal combustion engine, the motor generator having the rotor with a magnet, and a stator with coils driven in three or more phases, the coils of each phase not being connected to each other,
- wherein when a number of rotations of the rotor is in a low rotation range below a predetermined number of rotations, some coils among the three or more phases are brought into a state in which both ends are disconnected from a vehicle-mounted battery,
- wherein when the number of rotations of the rotor is in a high rotation range above the predetermined number of rotations, some coils among the three or more phases are brought into a state in which both ends of a coil are short-circuited, and
- wherein when the number of rotations of the rotor is lower than the predetermined number of rotations, making a second phase among the three or more phases into a state in which torque is generated by the rotor, and making the other coils into the state in which both ends are electrically disconnected from the vehicle-mounted battery or the state in which both ends of the coil are short-circuited, and reducing a torque applied to the rotation output shaft by the rotor as a number of rotations of the rotation output shaft of the internal combustion engine increases.
Dependencies are inferred from the claim text.