Patent ID: 9018890
Filing Date: 2015-04-28
Classification: H02P

Abstract:
1. An electric motor having a stator and a rotor, and having a control unit which is connected to at least one of the stator and the rotor and is designed to supply current to at least one of the stator and the rotor for the purpose of rotating the rotor, wherein the control unit has a pulse width modulator which is designed to control a power output from the electric motor by producing a predetermined number of different current supply patterns corresponding to current supply pattern intervals, wherein the current supply patterns each represent a power output from the electric motor and have a chronological sequence of current pulses with a respective current pulse duration for a corresponding one of the current supply pattern intervals, wherein the control unit is designed to actuate the electric motor with a different power than represented by a predetermined current supply pattern during a time interval of actuation by supplying current to the electric motor on the basis of at least two different current supply patterns during at least two corresponding current supply pattern intervals such that a predetermined power output from the electric motor on average over time for the time interval of actuation is different than the power outputs represented by the current supply patterns in the time interval of actuation, the time interval of actuation being greater than one of the current supply pattern intervals, and wherein the time interval of actuation has only the current supply pattern intervals.