Patent ID: 6154013
Filing Date: 2000-11-28
Classification: H02K,Y02E,Y10T

Abstract:
An arrangement for controlling the rotational speed, efficiency, torque, and power of a device selected from the group of devices consisting of an electric motor, an electric generator, and a regenerative electric motor, the device including a rotor supported for rotation along a predetermined rotor path about a given rotor axis and a stator having a plurality of dynamically activatable and deactivatable electromagnets including amorphous metal magnetic cores, the electromagnets being spaced apart from one another adjacent to the predetermined rotor path such that movement of a particular point of the rotor from a given point adjacent one electromagnet to a given point adjacent the next successive electromagnet defines one duty cycle, the arrangement comprising:a) a position detector arrangement for determining the position and rotational speed of the rotor relative to the stator at any given time in a duty cycle and producing corresponding signals; andb) a controller responsive to the signals for controlling the activation and deactivation of the electromagnet of the stator using predetermined device control settings such that, for each duty cycle, the controller is able to control any combination of a plurality of activation and deactivation parameters in order to control the speed, efficiency, torque, and power of the device.