Service to and for electrical needs is a requirement that business must have in order to operate under present day practices in order to prosper. A fair return on investment is not only useful but necessary. A ``fair return'' is an economic consideration for extension or removal of power distribution systems. Should the ``fair return'' not be viable and electricity requirements still be a necessity, then alternate electricity production methods will be reviewed for acceptance. Electric power availability, revisions (additions or reductions) along with procurement, including alternate generation will be reviewed and summarized.

Power Line Extensions and Revisions

The leading commutating circuit options for an advanced self-commutated-type power converter were tested and analyzed by computer simulation. An analytical and experimental evaluation of advanced commutation circuits, an evaluation of alternative advanced bridge designs, selection of the most desirable conceptual design, and the development of a mathematical model of converter response are described. Experimental data and preliminary converter specifications are contained in the appendixes.

J.R. Vivirito

Papers

Ac/dc power converter for batteries and fuel cells. Annual report