Circuit for automatic load sharing in parallel converter modules

Details Circuit for automatic load sharing in parallel converter modules Circuit for automatic load sharing in parallel converter modules

1977-09-15

1979-04-10

Shoop, William M.

Electric power conversion systems

Current conversion

Having plural converters for single conversion

363134, 363 95, H02M 3335, H02P 1318

Patent

active

041492331

ABSTRACT:
A nondissipative circuit for automatic load sharing in parallel converter modules having push-pull power transistors, each transistor having a separate current-sensing transformer and an impedance-adjusting transformer in series with its collector. The impedance-adjusting transformer functions as a current-controlled variable impedance that is responsive to the difference between the peak collector current of the transistor and the average peak current of all collector currents of power transistors in all modules, thereby to control the collector currents of all power transistors with reference to the average peak collector current.

REFERENCES:
patent: 2824274 (1958-02-01), Holt, Jr.
patent: 3254302 (1966-05-01), Boykin et al.
patent: 3621365 (1971-11-01), Beck
patent: 3806792 (1974-04-01), Untamo
patent: 4002963 (1977-01-01), Hunter

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