IEEE_Dallas_Power_Electronics

Although it has long been argued that electronic power converters can help improve system controllability, reliability, size, and efficiency, their penetration in power systems is still quite low. The often-cited barriers of higher cost and lower reliability of the power converters are quite high if power electronics is used as direct, one-to-one, replacement for the existing electromechanical equipment. However, if the whole power distribution system were designed as a system of controllable converters, the overall system cost and reliability could actually improve, as is currently the case at low power levels within computer and telecom equipment.

Future advanced electric power systems will have practically all loads interfaced to energy sources through power electronics equipment. Furthermore, all alternative, sustainable, and distributed energy sources, as well as energy storage systems, can only be connected to electric grid through power electronics converters. This will require new concepts for electronic control of all power flows in order to improve energy availability, power density, and overall energy and power efficiency in all electrical systems, from portable devices to cars, airplanes, ships, homes, data centers, buildings, and the power grid.

Starting from the example of a computer power system, the talk will contemplate possible future ac and dc electronic power system architectures, which fully decouple the dynamics of sources, distribution system, and loads by using separate source-, load-, and distribution-converters. Several ideas and possible methodologies for modeling, analysis, and system-level design of such systems, including power flow control, protection, stability, and subsystem interactions, are presented.

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