Using thevenin equivalents to improve electricity delivery efficiency in AC and DC systems

Abstract

A recent South African invention and internationally provisionally registered patent consists of multi-port electrical converters. The converter will inject or tap electric power at a point of common coupling (PCC) in such a way that the total power injected or drawn is transmitted from source to destination throughout an electrical network so that the losses associated with the transmission will be minimum. This applies to any m-number of wires. The wires voltages and currents can be DC, AC or a combination. The device does this by first determining in a novel way the dynamically changing Thévenin equivalent circuit at the point of common coupling (PCC). Some of the applications of the approach are: dispatching power from conventional, renewable sources, storage, as well as receiving power into a storage device or at a consumer point.