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Robust Control Methods in Telecom UPS System Applications

The modern powering systems are extremely complex dynamical processes consisting of regulated high-frequency converters and passive electrical elements connected in series and parallel. It is not easy to design controllers, which will guarantee the stability and performance in all operation conditions. Today ad hoc methods are used to design and tune the controllers and systems. The application of the high-frequency power converters is continuously growing, which sets higher and higher demands on the safe performance of the powering systems both in DC and AC systems.

A system theoretical approach is used to build a suitable formalism needed in the analysis of the interconnected systems. Polynomial algebra is used to consider the structural properties of the system and to build suitable controller synthesis methods. The mathematical treatment is rigorous. Simulations are extensively used to verify the results obtained. A practical test bench is used for final verification of the developed design methods.

Our research partners are University of Oulu and Tampere University of Technology. Our research is financed by The Academy of Finland.

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