Patent ID: 7034500

Claim:
An electric drive assembly for driving a driven unit, comprising: a controller configured to supply a first power and a second power, wherein the first power is from a power electronics converter and the second power is line power; an electric drive electrically connected to the controller and including, a housing, a shaft connected to the driven unit and rotatable with respect to the housing, a first drive member including a first stator fixed relative to the housing and a first rotor member that is connected to the shaft and rotatable therewith, wherein the first drive member receives the first power, a second drive member including a second stator fixed relative to the housing and a second rotor member that is connected to the shaft and rotatable therewith, wherein the second drive member receives the second power; and wherein when the controller supplies power to the first drive member but not to the second drive member, the electric drive produces a first shaft speed and a first output torque, when the controller supplies power to the second drive member but not to the first drive member, the electric drive produces a second shaft speed and a second output torque, and when the controller supplies power to the first drive member at the same time that it supplies power to the second drive member, the electric drive produces a third shaft speed and a third output torque.