Patent ID: 9214837
Filing Date: 2015-12-15
Classification: H02K,H02P

Abstract:
1. An electric motor apparatus comprising: a rotor; and a stator formed of at least two stator components, each of said at least two stator components having a substantially hollow cylindrical form; said rotor being mounted within said at least two stator components on a rotational mounting such that said rotor can rotate about a longitudinal central axis with respect to said stator; each of said at least two stator components comprising at least two protrusions arranged at different circumferential points on an inner surface of said at least two stator components, each of said at least two protrusions having a winding mounted thereon; and control circuitry configured to generate control signals to control power supplied to said windings on each of said at least two stator components, such that power can be controlled to each of said at least two stator components independently of each other; wherein said at least two stator components are mounted adjacent to each other along said longitudinal central axis and rotationally offset with respect to each other, such that said at least two protrusions on one of said at least two stator components are offset with respect to said at least two protrusions on an adjacently mounted one of said at least two stator components, such that a portion of each of said windings that extends beyond a longitudinal end of said protrusions on said one of said at least two stator components fits within a gap between windings mounted on said adjacently mounted stator component.