INFORMATION PROCESSING DEVICE, INFORMATION STORAGE DEVICE, AND CONTROL DEVICE OF ROTARY ELECTRIC MACHINE

• US 20170126161A1
• Filed: 03/18/2015
• Published: 05/04/2017
• Est. Priority Date: 03/27/2014
• Status: Active Grant

• Current Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.), Kabushiki Kaisha Toyota Chuo Kenkyusho (Toyota Motor Corporation), Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Aisin Seiki Co., Ltd. (Aisin Corp.), Kabushiki Kaisha Toyota Chuo Kenkyusho (Toyota Motor Corporation), Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: WATANABE, Takao, TSUCHIYA, Eiji, MATSUMOTO, Shohei, MURAKAMI, Akira, HIJIKATA, Wataru, UEMURA, Masahide, TOHYAMA, Tomoyuki
• Granted Patent: US 9,887,656 B2
• Time in Patent Office: Days
• CPC Class Codes: B60L 15/025 using field orientation; Vector control; Direct Torque Control [DTC]
• CPC Class Codes: B60L 15/20 for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
• CPC Class Codes: B60L 2220/50 Structural details of electrical machines
• CPC Class Codes: B60L 2240/421 Speed
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60L 2240/427 Voltage
• CPC Class Codes: B60L 2240/429 Current
• CPC Class Codes: B60L 2260/42 by adaptive correction
• CPC Class Codes: B60L 2260/44 by parameter estimation
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: G05B 17/02 electric
• CPC Class Codes: H02K 1/148 Sectional cores H02K1/141 takes precedence
• CPC Class Codes: H02K 1/24 Rotor cores with salient poles ; Variable reluctance rotors
• CPC Class Codes: H02K 1/2706 Inner rotors
• CPC Class Codes: H02K 16/02 Machines with one stator and two or more rotors
• CPC Class Codes: H02K 16/04 Machines with one rotor and two stators
• CPC Class Codes: H02K 21/12 with stationary armatures and rotating magnets
• CPC Class Codes: H02K 21/16 having annular armature cores with salient poles with homopolar co-operation H02K21/20
• CPC Class Codes: H02K 21/24 with magnets axially facing the armatures, e.g. hub-type cycle dynamos
• CPC Class Codes: H02K 3/18 Windings for salient poles
• CPC Class Codes: H02K 51/00 : Dynamo-electric gears, i.e. dynamo-electric means for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts
• CPC Class Codes: H02K 7/006 : Structural association of a motor or generator with the drive train of a motor vehicle
• CPC Class Codes: H02P 21/00 : Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
• CPC Class Codes: H02P 21/24 : Vector control not involving the use of rotor position or rotor speed sensors
• CPC Class Codes: H02P 27/06 : using dc to ac converters or inverters H02P27/05 takes precedence
• CPC Class Codes: Y02T 10/64 : Electric machine technologies in electromobility
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/72 : Electric energy management in electromobility

Abstract

A current command value calculating unit (174) calculates current command values for a rotor winding (30) and current command values for a stator winding (20) with respect to a torque command value between a first rotor (28) and a second rotor (18) and a torque command value between a stator (16) and the second rotor (18) based on an evaluation function representing a total copper loss of the rotor winding (30) and the stator winding (20) and using first and second magnetic interference models. The first magnetic interference model represents a relationship of a linkage magnetic flux Φ_in of the rotor winding (30) with respect to a current I_in in the rotor winding (30) and a current I_out in the stator winding (20). The second magnetic interference model represents a relationship of a linkage magnetic flux Φ_out of the stator winding (20) with respect to the current I_in, I_out.

Claims

1. An information processing device that calculates a current command value based on a torque command value of a rotary electric machine, wherein

the rotary electric machine comprises a first rotor in which a rotor winding is provided, a stator in which a stator winding is provided, and a second rotor that opposes the first rotor and the stator and that is rotatable relative to the first rotor,

a torque acts between the first rotor and the second rotor according to a magnetic flux due to a current in the rotor winding acting on the second rotor, and a torque acts between the stator and the second rotor according to a magnetic flux due to a current in the stator winding acting on the second rotor,

a linkage magnetic flux of the stator winding can be adjusted by the current in the rotor winding and a linkage magnetic flux of the rotor winding can be adjusted by the current in the stator winding,

the information processing device comprises a current command value calculating unit that calculates a current command value for the rotor winding and a current command value for the stator winding with respect to a torque command value between the first rotor and the second rotor and a torque command value between the stator and the second rotor, based on an evaluation function representing a total copper loss of the rotor winding and the stator winding and using a first magnetic interference model and a second magnetic interference model,

the first magnetic interference model represents a relationship of the linkage magnetic flux of the rotor winding with respect to the current in the rotor winding and the current in the stator winding, and

the second magnetic interference model represents a relationship of the linkage magnetic flux of the stator winding with respect to the current in the rotor winding and the current in the stator winding.

2. The information processing device according to claim 1, wherein

the first magnetic interference model and the second magnetic interference model include model equations related to a magnetomotive force, in which the current in the rotor winding and the current in the stator winding are combined with a setting ratio.

3. The information processing device according to claim 2, wherein

the setting ratio is 1:

C, where C is a coefficient representing a degree of magnetic interference.

4. The information processing device according to claim 2, wherein

the first magnetic interference model and the second magnetic interference model further include model equations representing a degree of change of the linkage magnetic flux by magnetic saturation.

5. The information processing device according to claim 1, wherein

the first magnetic interference model and the second magnetic interference model have a model related to a d-axis linkage magnetic flux and a model related to a q-axis linkage magnetic flux.

6. The information processing device according to claim 1, wherein

the current command value calculating unit calculates the current command value for the rotor winding and the current command value for the stator winding based on the evaluation function and a constraint condition including a condition that a voltage of the rotor winding is less than or equal to a first limit value and a voltage of the stator winding is less than or equal to a second limit value, and using the first magnetic interference model and the second magnetic interference model.

7. The information processing device according to claim 6, wherein

electric power can be converted between an electricity storage device and the stator winding by a first electric power conversion device,

electric power can be converted between the electricity storage device and the rotor winding by a second electric power conversion device, and

the first limit value and the second limit value are set to values smaller than a voltage of the electricity storage device.

8. The information processing device according to claim 1, wherein

the current command value calculating unit calculates the current command value for the rotor winding and the current command value for the stator winding based on the evaluation function and a constraint condition including a condition that the current in the rotor winding is less than or equal to a third limit value and the current in the stator winding is less than or equal to a fourth limit value, and using the first magnetic interference model and the second magnetic interference model.

9. The information processing device according to claim 8, wherein

electric power can be converted between an electricity storage device and the stator winding by a first electric power conversion device,

electric power can be converted between the electricity storage device and the rotor winding by a second electric power conversion device,

the third limit value is set to a value smaller than a capacity of the second electric power conversion device, and

the fourth limit value is set to a value smaller than a capacity of the first electric power conversion device.

10. The information processing device according to claim 1, wherein

the current command value calculating unit calculates the current command value for the rotor winding and the current command value for the stator winding such that the evaluation function is approximately minimum.

11. An information storage device that stores the current command value for the rotor winding and the current command value for the stator winding calculated by the information processing device according to claim 1 in correspondence to the torque command value between the first rotor and the second rotor and the torque command value between the stator and the second rotor.

12. A control device of a rotary electric machine, that controls the current in the rotor winding and the current in the stator winding based on the current command value for the rotor winding and the current command value for the stator winding calculated by the information processing device according to claim 1.