Electricity: power supply or regulation systems – For reactive power control – Using converter
Reexamination Certificate
2007-01-02
2007-01-02
Riley, Shawn (Department: 2838)
Electricity: power supply or regulation systems
For reactive power control
Using converter
C363S017000
Reexamination Certificate
active
10689863
ABSTRACT:
A single stage, single switch, input-output isolated converter configuration which uses a hybrid combination of forward and flyback converters is disclosed. The converter operates at a high input power factor with a regulated DC output voltage. It makes use of a novel control scheme utilizing duty cycle control at two discrete operating frequencies. Although the invention employs two frequencies, it does not use a continuous frequency variation. This configuration has the advantage of reduced peak current stresses on the components and is specifically suited for ‘buck’ applications where low DC output voltages (e.g. 24V, 48V) are needed. This configuration will be of specific interest to industries associated with battery charging and uninterruptible power supply (UPS) systems. Apart from having several competitive features compared with prior art techniques, the dual frequency operation scheme reduces the amplitude of its noise spectrum by spreading it over a wider frequency range thus making it more electromagnetic compatible.
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Agarwal Vivek
Bontemps Serge
Calmels Alain
Sundarsingh Victor Prince
Marger & Johnson & McCollom, P.C.
Microsemi Corp. —Power Products Group
Riley Shawn
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