Damped electric motor

Abstract

An electric motor and a method of making the electric motor is disclosed herein. The motor comprises a stator and a rotor being arranged coaxially, with said rotor provided internally of said stator. The stator having one or more stator teeth extending radially inwardly towards said rotor. The rotor has a plurality of magnets forming an outer rotor surface. A first face of the or each stator tooth faces the outer rotor surface. An electrically-conductive non-magnetic damper bar is partially embedded in the or each stator tooth, the or each damper bar having an outer damper bar surface. A groove is formed in the first face of the or each stator tooth to at least partially expose the outer damper bar surface. The groove can improve flux linkage between the rotor and the damper bars and thus improve the damping of the electric motor.

Dependencies are inferred from the claim text.