Load sharing modular power supply system

Details Load sharing modular power supply system Load sharing modular power supply system

1976-03-01

1978-02-14

Scott, James R.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Load current control

307 52, 307 69, H02J 104

Patent

active

040741460

ABSTRACT:
A power supply employing a clock-driven D.C.-A.C.-D.C. converter having a current transformer in the A.C. section to develop a trapezoidal current feedback pulse train which is then converted to a trapezoidal voltage pulse train. A comparator compares the trapezoidal voltage pulse train to a voltage reference level set such that it is normally crossed by the ramp portion of each trapezoidal voltage pulse. Upon occurrence of a ramp crossing, which varies with the level of the output current, a control pulse is produced by the comparator and supplied to gating logic which develops driving pulse trains for the D.C.-A.C.-D.C. converter and cuts off each driving pulse upon occurrence of a control pulse. The resulting power supply constitutes a voltage-controlled constant current power supply which may be connected with an arbitrary number of other such supplies to a power bus and a common feedback-controlled voltage reference source.

REFERENCES:
patent: 3067334 (1962-12-01), Byloff et al.
patent: 3480789 (1969-11-01), Binckley et al.
patent: 3600599 (1971-08-01), Wright et al.
patent: 3602799 (1971-08-01), Guillen
patent: 3704381 (1972-11-01), Nercessian
patent: 3831080 (1974-08-01), Zabert et al.

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