Forced load sharing circuit for inverter power supply

Details Forced load sharing circuit for inverter power supply Forced load sharing circuit for inverter power supply

1981-05-26

1984-01-10

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 71, H02P 1322

Patent

active

044256132

ABSTRACT:
A power supply system that utilizes a plurality of inverter power supplies connect in common to drive a common load with control circuitry for forcing the power supplies to share the load equally is described. Control circuitry associated with each inverter power supply senses the current level provided to the load and compares to the average current provided by all other power supplies in the system. The control circuitry includes circuitry for controlling the pulse width modulator circuitry in response to the sensed condition that the power supply is supplying more than its equal share of the load and causes it to adjust the duty cycle of power switches in the power supply downward to reduce the output current level.

REFERENCES:
patent: 2775733 (1956-12-01), Winograd
patent: 3621365 (1971-11-01), Beck
patent: 4149233 (1979-04-01), Frosh et al.
patent: 4276590 (1981-06-01), Hansel et al.
patent: 4338658 (1982-07-01), Toy
patent: 4359679 (1982-11-01), Regan

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