Architecture for achieving resonant circuit synchronization...

Details Architecture for achieving resonant circuit synchronization... Architecture for achieving resonant circuit synchronization...

2006-05-30

2006-05-30

Laxton, Gary L (Department: 2838)

Electric power conversion systems

Current conversion

Having plural converters for single conversion

C363S025000, C363S134000

Reexamination Certificate

active

07054176

ABSTRACT:
A multi-stage, push-pull driven, resonant DC-AC converter ties the center-taps of primary windings of respective push-pull stages together, and drives each center-tap with a current source. Tying the center-taps of the primary windings of the respective DC-AC converters' transformers together forces the voltages at these locations to be the same, so as to achieve mutual resonant synchronization between the two stages. Connecting the center-taps to a current source provides the necessary power for each stage and allows for a variation in current between stages, as the center-tap voltages track one another. The tied-together center-tap voltage is monitored to obtain the zero voltage switching required for efficient operation of switching devices of each DC-AC converter stage.

REFERENCES:
patent: 4222098 (1980-09-01), Frosch et al.
patent: 5852555 (1998-12-01), Martin
patent: 6169668 (2001-01-01), Clayton
patent: 6754090 (2004-06-01), Arai et al.

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