Low-loss control of DC-DC converters in an energy storage...

Details Low-loss control of DC-DC converters in an energy storage... Low-loss control of DC-DC converters in an energy storage...

2011-08-02

2011-08-02

Nguyen, Matthew V (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

Reexamination Certificate

active

07990117

ABSTRACT:
An energy storage system including a buck-boost DC-DC converter operable so as to minimize switching loses. The system includes a first energy storage device, e.g., a bank of ultracapacitors, and a second energy storage device, e.g., a second bank of electrolytic capacitors. Both first and second energy storage devices are connected to the DC-DC converter. The DC-DC converter is operated in a non-standard manner so as to reduce switching and other losses. In particular, the DC-DC converter may be operated in an alternate buck mode so as to force on a switch S2through which energy flows from the first energy storage device to the second energy storage device. The switch S2is forced on for so long as the voltage on the second energy storage device remains within a first operating window.

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