Current sharing modular power system

Electric power conversion systems – Current conversion – Having plural converters for single conversion

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Details

307 82, H02M 723

Patent

active

042765900

ABSTRACT:
A current sharing modular power system including, in each module, an inverter circuit and means to determine the current to a common load from the module. A difference circuit is provided to determine the difference between the module supplied current and the average of the current supplied by the other modules. The difference is then utilized to vary the pulse width of the inverter output so that the pulses are wider if the current from the module is smaller than the current supplied by the other modules and the pulses are thinner if the current from the module is larger than the average current supplied by the other modules. The system also includes a voltage sense circuit to adjust the module operation to maintain a constant voltage output.

REFERENCES:
patent: 3217171 (1965-11-01), Corey
patent: 3303349 (1967-02-01), Sinclair et al.
patent: 3621365 (1971-11-01), Beck et al.
patent: 3675037 (1972-07-01), Hamilton
patent: 4074182 (1978-02-01), Weischedel
patent: 4150425 (1979-04-01), Nagano et al.
patent: 4222098 (1980-09-01), Nagano

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