Patent ID: 7279858

Claim:
A drive regenerative control system, comprising: a drive system for driving a driven body in which an electric motor is combined with another drive source as necessary; a mechanism for transmitting the driving force from the drive system to the driven body; an electric motor operation control circuit for controlling the drive and regeneration of the electric motor; a storage mechanism for storing regenerative energy; a storage control circuit; a sensor for detecting the motion of the driven body; and an operation control device for outputting a drive control signal to the electromotive drive system based on the sensor output; wherein the electric motor has a movable body constituted from a magnetic body, and a plurality of phase coils, and the operation control device controls one or a plurality of the phase coils for driving and/or regeneration according to the operation status of the driven body; and wherein, when the driven body is running on a low load, said operation control device performs control so as to simultaneously use a part of the a plurality of phase coils for driving and the other phase coils for regeneration.