6 phase motor torque measurement and control system
AssigneeBorgWarner Luxembourg Automotive Systems SA
InventorFelix MANDOUX
Life of this patent
Estimating the term…
Abstract
A method of measuring torque is provided in a six phase electrical motor which includes a motor-stator including two electrically independent stator winding arrangements which each have three combined windings such that the winding arrangements are symmetrical and offset by an angle to each other and such that each combined winding of the second stator arrangement has a corresponding combined winding in the first stator arrangement and offset thereto by an angle. The method includes a) determining the current in the three combined windings of the first stator arrangement and/or the current in the three combined windings of the second stator arrangement and b) determining the torque from the currents.
Claims19
1-19. (canceled)
A method of measuring torque in a six phase electrical motor, said six phase electrical motor including a motor stator including a first stator winding arrangement and a second stator winding arrangement which is electrically independent of the first stator winding arrangement, the first stator winding arrangement and the second stator winding arrangement each comprising three combined windings;
- the first stator winding arrangement and the second stator winding arrangement being symmetrical and offset by an angle to each other, such that the combined windings of the second stator winding arrangement has a corresponding combined winding in the first stator winding arrangement and offset thereto by an angle, said method comprising:
- a) determining currents in the three combined windings of the first stator winding arrangement and/or currents in the three combined windings of the second stator winding arrangement;
- and
- b) determining a torque from the currents determined from a).
A controller for a six phase electrical motor and controller therefor, said six phase electrical motor including a motor stator including a first stator winding arrangement and a second stator winding arrangement which is electrically independent of the first stator winding arrangement, the first stator winding arrangement and the second stator winding arrangement each comprising three combined windings;
- the first stator winding arrangement and the second stator winding arrangement being symmetrical and offset by an angle to each other, such that the combined windings of the second stator winding arrangement has a corresponding combined winding in the first stator winding arrangement and offset thereto by an angle, wherein said controller is configured to:
- a) determining currents in the three combined windings of the first stator winding arrangement and/or currents in the three combined windings of the second stator winding arrangement;
- and
- b) determining a torque from the currents determined from a).
Dependencies are inferred from the claim text.