Power supply system

Details Power supply system Power supply system

2005-07-12

2005-07-12

Laxton, Gary L (Department: 2838)

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

C363S021020, C363S071000

Reexamination Certificate

active

06917531

ABSTRACT:
Two proposals are made for power supply systems comprising at least one resonant inverter and one control unit. According to the first proposal the power supply system comprises two inverters and produces two output voltages, the control circuit processing as an actual value on the one hand the sum of and on the other hand the difference between the two output voltages. According to the second proposal a control circuit does not directly process the controlled variables for a power supply system comprising at least one inverter, but difference units for controlled variables determine the deviations from a preceding sampling instant and these difference values are processed. Also the correcting variable calculated in this way is a difference value which is converted into a correcting variable value by a correcting variable summing unit. The two proposals can be advantageously combined. As an important improvement is proposed the use of a limiting controller which generally becomes active in case of imminent transgression of a maximum value and which limits the actuation. The control circuit is preferably used as a digital control circuit for a state space control.

REFERENCES:
patent: 5272612 (1993-12-01), Harada et al.
patent: 5731968 (1998-03-01), Van Der Broeck et al.
patent: 6072856 (2000-06-01), Van Der Broeck et al.
patent: 6351401 (2002-02-01), Scheel et al.
patent: 6738275 (2004-05-01), Beland
Nakaoka, M., et al.; The state of the art phase-shifted ZVS-PWM series and parallel resonant DC-DC power converters . . . ; IEEE Proceedings, Toledo, Jun., 1992; pp. 62-70.

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