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Project information

Control of active power filters for uninterruptible power supply systems

A. García-Cerrada P. García-González R.R. Pecharromán J.D. Muñoz Frías

October 2006 - September 2009

Funding entity Ministerio de Educación y Ciencia

Participated by Universidad de Castilla la Mancha


This project will develop a pre-industrial prototype for an active power filter (APF) to be used to improve the electromagnetic compatibility of uninterruptible-power supplies (UPS’s). The device should also provide flexible reactive-power control at the point of coupling with the mains. This action intends to consolidate the results of a previous project (DPI2002-03962) by means of one of its possible industrial applications. The project will go along three main lines:

(a) First of all, the research team will consolidate the existing experimental-design platform which has been used for power-electronics-control development. It is based on a microprocessor system compatible with a commercial PC, a simulation, analysis and design environment with code-translation tools for real-time applications and a real-time operating system. The design platform must remain open so that the user can customise it to suit each application.
(b) Secondly, the realistic specifications for the compensating device must be established to cover applications in a wide power range. All the specifications must be investigated experimentally in the prototype.
(c) Thirdly, the addition of the active-filter capabilities to the front-end of the UPS system must be investigated.
(d) Finally, the use of new semiconductor devices (i.e. Silicon Carbide) in the high-power UPS market must also be investigated.


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