Regulated power supply system including saturable reactor means

Details Regulated power supply system including saturable reactor means Regulated power supply system including saturable reactor means

1978-07-10

1980-08-12

Pellinen, A. D.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

323 7, 323DIG1, 363 91, H02M 3335

Patent

active

042176328

ABSTRACT:
A regulated power supply system is disclosed including a source of unidirectional electric current, and at least one switch device including a saturable reactor controlled between a saturated condition and an unsaturated condition in a duty cycle such that the load voltage tends to remain constant with varying load current. In one embodiment, a pair of switch devices are coupled, respectively, between the ends of a center-tapped secondary winding of a transformer having a primary winding fed from an inverter, and a pair of rectifier devices coupled to provide the unidirectional current to the load. Control of the switch devices is effected by applying an appropriately varying control voltage to like electrodes of respective inverted control diodes each coupled to the junction between a respective switch device and its associated rectifier device. The control diodes are driven from the output of a comparator amplifier responsive to the difference between the load voltage and a reference voltage. A pulse modulator fed by the amplifier output provides the control diodes with pulses of appropriate varying duty cycle.

REFERENCES:
patent: 2843818 (1958-07-01), Mintz et al.
patent: 3048767 (1962-08-01), Smeltzer
patent: 3324380 (1967-06-01), Schaefer
patent: 3344255 (1967-09-01), Ferguson
patent: 3976931 (1976-08-01), Sterling
patent: 4122514 (1978-10-01), Amin
Ramsay et al., "British Magnetic Amplifier Developments," Reprint from Electrical Manufacturing, Jul. 1958, pp. 1-4, 363-391.

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