Parallel Operation of Aerospace Static Inverters

Abstract

Load division was accomplished by locking both static inverters in-phase and automatically controlling the magnitude of each inverter's internal voltage. Mathematical analysis shows (1) that the inverter internal impedance determines design of load division circuit, and (2) any reasonable load division accuracy can be obtained by using sufficient load division circuit gain. This paralleling method can be used with any number of static inverters and offers unique adaptability, reliability, and high power capability for aerospace applications.