Patent ID: 9209671
Filing Date: 2015-12-08
Classification: H02K

Abstract:
1. A stator module comprising: a first stator and a second stator disposed coaxially with the first stator with respect to a rotational axis, wherein each of the first stator and the second stator is rotatable in a circumferential direction around the rotational axis and each of the first stator and the second stator comprises a coil wound thereon; and a rotation driving unit which controls a rotation of the first stator and a rotation of the second stator, such that the second stator rotates through a rotational angle equal to a rotational angle through which the first stator rotates, and the second stator rotates in a direction opposite to a direction in which the first stator rotates, thereby controlling a flux linkage of a rotor according to the rotational angle of each of the first stator and the second stator.