Patent ID: 8391033
Filing Date: 2013-03-05
Classification: H02M,Y02B

Abstract:
1. A Buck-Boost Converter, comprising: an energy-transfer reactance comprising a parallel combination of an inductor with a capacitor; first and second power portals, each with two or more ports by which electrical power is input from or output to said portals; first and second bridge switch arrays interposed between said reactance and respective ones of said portals, and each comprising one bidirectional switching device for each said port of each said power portal, wherein said bridge arrays are full bridge arrays and are symmetrically connected to said energy-transfer reactance; and a link switch, connected across said reactance in a crowbar configuration which includes a resistor, to dissipate energy stored in said reactance when said link switch is on, and when said parallel combination of said inductor and said capacitor is isolated from said first and second power portals when all of said bidirectional switching devices in the first and second bridge switch arrays are turned off.