Power-Packet-Switching Converter With Sequenced Connection To Link Inductor

Abstract

Methods and systems for managing link voltages in a power converter, where single phase, three phase or universal systems can be used. Common mode management refers to shifting of voltages in a particular direction to perform transition between input and output ports, in addition to maintaining soft switching property. Voltages in power converters can be freely increasing and decreasing, and thus damage to the circuit can be caused if these voltages change are not controlled.

1 - 9 . (canceled) 
     
     
         10 . A method of operating a power converter, comprising the actions of:
 connecting at least two phase legs to drive first and second rails in a first direction; wherein a parallel inductor plus capacitor combination is connected across said rails;   repeatedly connecting said inductor plus capacitor combination to transfer power out of said inductor plus capacitor combination;   wherein when power is transferred out of said inductor plus capacitor combination, under at least some circumstances, one of said rails is clamped to an input or output terminal, while the voltage of the other of said rails is shifted by the combination of said inductor and capacitor; and thereafter the other of said rails is clamped to a respective input or output connection, while the first one of said rails is driven by said inductor plus capacitor combination.   
     
     
         11 . A solar energy system comprising a power converter which implements the method of  claim 10 . 
     
     
         12 . A power conversion system which implements the method of  claim 10 .