Control in power electronics : selected problems The authors were originally brought together to share research and applications through the international Danfoss Professor Programme at Aalborg University in Denmark. Personal computers would be unwieldy and inefficient without power electronic dc supplies. Portable communication devices and computers would also be impractical. High performance lighting systems motor controls and a wide range of industrial controls depend on power electronics. In the near future we can expect strong growth in automotive applications dc power supplies for communication systems portable applications and high end converters. We are approaching a time when all electrical energy will be processed and controlled through power electronics somewhere in the path from generation to end use. The most up to date information available is presented in the text Written by a world renowned leader in the field