Current balancing structure for semiconductor switching devices

Details Current balancing structure for semiconductor switching devices Current balancing structure for semiconductor switching devices

1990-03-20

1991-04-23

Beha, Jr., William H.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

307254, 323272, H02M 75387

Patent

active

050104705

ABSTRACT:
A current balancing structure in which an alternating current output is produced by alternately connecting a DC potential to an output voltage bus through the switching action of a paralleled array of semiconductor devices forces equal current to flow through each device. During switching intervals, some semiconductor devices may "turn-on" or "turn-off" faster than others thus possibly forcing any conductive devices to carry a much higher current than when all the devices are conducting. Diodes protect the conductive devices by providing alternative circuit path to a DC reference potential voltage bus when one device becomes non-conductive before another paralleled device.

REFERENCES:
patent: 3699358 (1972-10-01), Wilkinson
patent: 4201957 (1980-05-01), Cathell
patent: 4567379 (1986-01-01), Corey et al.

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