Publication

Cascaded H-Bridge Multilevel Converter for a High-Power Medium-Voltage Impedance-Admittance Measurement Unit

Drazen Dujic, Francisco Daniel Freijedo Fernández, Marko Petkovic, Nicolai Hildebrandt
2018
Conference Papers

Abstract

Recent trends in power system design and inclusion of renewable energy sources and smart grids are creating different subsystem interactions that require proper investigation, understanding, describing and estimating global system stabilitythrough impedance-admittance measurement and identification. This paper proposes and presents the cascaded H-bridge multilevel inverter topology for perturbation injection converter and impedance-admittance measurement. The methodology of impedance-admittance measurement is explained together with different measurement. Performance and suitability of this topology for impedance-admittance measurement is evaluated through simulations. As a main result of this study, the feasibility of injecting small-signal perturbations in the medium-voltage level system is shown.

Official source

https://infoscience.epfl.ch/entities/publication/9b43a9b8-fe07-4be2-98f7-90d97fbd59e1

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Drazen Dujic, Francisco Daniel Freijedo Fernández, Marko Petkovic, Nicolai Hildebrandt
2018
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/9b43a9b8-fe07-4be2-98f7-90d97fbd59e1

About this result

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A power inverter, inverter or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). The resulting AC frequency obtained depends on the particular device employed. Inverters do the opposite of rectifiers which were originally large electromechanical devices converting AC to DC. The input voltage, output voltage and frequency, and overall power handling depend on the design of the specific device or circuitry. The inverter does not produce any power; the power is provided by the DC source.

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