This was a blow. I think my proposal to study Ballistic Breakers for HVDC was strong. I know I was stepping into an area with many unknowns, but also one that is very important. Multi-terminal HVDC systems require HVDC circuit breakers, and I doubt the economics of IGBT-based approaches.
Thank God I am clear that the Ballistic Breaker is important, and that it has introductory markets that do not depend on HVDC.
Note added September 14, 2011:
I recently found out that General Atomics and Professor Mike Mazzola (http://www.ece.msstate.edu/people/profile.php?mazzola) of Mississippi State University were encouraged in the same Round #4 ARPA-E solicitation where I was discouraged. Fair enough, and good luck on solving this important problem. Watch out for those on-state losses and switching transients.
Electric Pipeline Corporation has invented and is developing polymer insulated electric pipelines "elpipes" for transmission of 3-30 GW through a pair of underground HVDC lines. Elpipes fit inside a pipeline that is similar to a gas pipeline, or they may be installed at the surface on conventional or narrow gauge railroad tracks. The train like features of elpipes make them convenient to install and convenient to repair.
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