Power Electronic Systems

The increasing use of renewable energy sources, the fragmentation of generating capacity (brought about by privatisation and deregulation), and the rising numbers of non-linear loads are all combining to create new challenges for the manager of power distribution networks. Our research in this area is concerned with active filtering techniques for distribution networks and the application of energy storage devices such as superconducting magnets, in order to control power quality and ensure system stability.

A second area of research concerns power distribution networks for future aircraft. Traditionally aircraft power is distributed at 400Hz through a radial achitecture, however this is likely to change due to the increased use of electrical power for example as electromagnetic actuators replace hydraulic equipment and as "power hungry" passenger comfort systems are installed. In association with Smiths Industries Aerospace and BAE systems, new power architectures are being examined, including the use of variable frequency AC or high voltage DC. The research includes power quality, protection and control issues.