duffy,
Do you have a schematic of the inverter described in your previous post?

Another example of HVDC is the 3100 megawatt capacity, 1,362 kilometer (846 mile) Pacific DC Intertie from the Washington-Oregon border to the Los Angeles, California area in the US.

EDIT: It is included in the Wikipedia HVDC article Projects List.

Originally Posted by Hero999

duffy,
Do you have a schematic of the inverter described in your previous post?

Yes, and you probably did too if you searched - but you might not have realized the thing you were looking at was bidirectional. They usually show it from left-to-right as the rectifier:

The ABB Group: HVDC technology

- but it works both ways. The operation is similar to a regenerative brake in motor control systems that use brushless multipole AC motors running off batteries.