MACHINE REACTIVE POWER OPTIMIZATION BY PULSING VOLTAGE APPLIED TO MOTOR
Original Publication Date: 1981-Feb-28
Included in the Prior Art Database: 2004-Apr-02
Xerox Disclosure Journal
In order to optimize the reactive power consumed by an electromechanical device such as, for example, a xerographic copier or duplicator, a control circuit is disclosed which detects the electrical impedance, phase relations, and current drain of the complete device. This information is used for temporal adjustment of gate signals applied to a triac or similar switch for control of machine operation in order to satisfy conditions imposed on its operation. The disclosure also includes the concept of a programmed digital control circuit such as, for example, a microprocessor, which can use a predictive status, phase relations and current drain in order to effect temporal adjustment of gate signals applied to the switch as above. The combination of both detection and predictive control approaches is also included in this disclosure.