When the control functions of various types of power electronics systems are examined, a significant degree of common functionality emerges, irrespective of the target application. It is possible to define hierarchical control architectures for these systems using common interface definitions between control system divisions or layers. Such definitions enable the use of common designs for multiple applications and the use of commercially available electronics and communications modules allowing cost reduction in power electronics applications. This paper presents various partitioning strategies of a hierarchical control architecture for use in high power electronics control systems and defines various parameters/functions that need to be handled within each layer, and those that need to be communicated between the layers. Each layer has characteristic processing and communication speed requirements, irrespective of the final applications.

The National Power Semiconductor Interagency/Utility Consortium has been formed to coordinate US research activities for development of materials and technologies related to high-power semiconductors. The history, activities, and investment strategy of this consortium are described briefly. The most promising power electronics devices considered by the consortium are discussed, leading to the conclusion that field-effect transistors and metal-oxide semiconductor (MOS) controlled thyristors (MCTs) will eventually dominate power-switching applications. New packaging techniques are also presented, in which silicon is used to replace bulky ceramic insulators and copper contacts, an arrangement that promises to lower costs and weight while improving device performance and life. Finally, the authors review policy issues related to power semiconductor research and recommend that R&D in this field be treated as a leading national priority.>

The role of power electronics in future power systems is considered. The improvement of power semiconductors is held up as a major factor to the increased importance of this role. Power electronics applications for HVDC transmission are discussed.>