Voltage regulated power supply utilizing phase shift control

Details Voltage regulated power supply utilizing phase shift control Voltage regulated power supply utilizing phase shift control

1997-08-12

2000-01-18

Riley, Shawn

Electric power conversion systems

Current conversion

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

363 98, 363 2, 363149, H02M 3335

Patent

active

060162570

ABSTRACT:
A power supply, including a resonant circuit having an output voltage and a current oscillating therethrough, and a voltage-fed half-bridge inverter producing a source voltage at an output coupled to the resonant circuit. The inverter is responsive to a driving signal. A driving circuit has a first input representing the sensed current oscillating through the resonant circuit, a second input representing the output voltage, and a reference voltage. The driving circuit includes compensation circuitry for maintaining the output voltage at the reference voltage and commanding a phase shift angle, and phase-shifting circuitry producing the driving signal based on a phase-shift of the sensed current. The amount of phase shift is commanded by the compensation circuitry.

REFERENCES:
patent: 4805081 (1989-02-01), Chambers et al.
patent: 4952849 (1990-08-01), Fellows et al.
patent: 5382882 (1995-01-01), Nerone
"A New and Improved Control Technique Greatly Simplifies the Design of ZVS Resonant Inverters and DC/DC Power Supplies", by Nalbant, Proceedings of IEEE Applied Power Electronics Conferences, Mar. 1995, pp. 694-701.
"A Comparison of Half-Bridge Resonant Conveter Topologies", by Steigerwald, IEEE Transactions on Power Electronics, Apr. 1988, pp. 174-181.

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