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Fault-tolerant three-level inverter

United States Patent

December 5, 2006
View the Complete Patent at the US Patent & Trademark Office
A method for driving a neutral point clamped three-level inverter is provided. In one exemplary embodiment, DC current is received at a neutral point-clamped three-level inverter. The inverter has a plurality of nodes including first, second and third output nodes. The inverter also has a plurality of switches. Faults are checked for in the inverter and predetermined switches are automatically activated responsive to a detected fault such that three-phase electrical power is provided at the output nodes.
Edwards; John (Kent, WA), Xu; Longya (Columbus, OH), Bhargava; Brij B. (Santa Barbara, CA)
The Boeing Company (Chicago, IL)
10/ 335,683
December 31, 2002
STATEMENT OF GOVERNMENT INTEREST This invention was made with government support under contract number DE-FC36-99-GO-10285 awarded by the Department of Energy. The U.S. Government has certain rights in this invention.