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Power flow control through a multi-level H-bridge based power converter for Universal and Flexible Power Management in future electrical grids

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5 Author(s)
Stefano Bifaretti ; University of Rome Tor Vergata/Department of Electronic Engineering, Italy ; Pericle Zanchetta ; Yue Fan ; Florin Iov
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The paper proposes a novel power conversion system for universal and flexible power management (UNIFLEX-PM) in future electricity network. The structure is based on three AC-DC converters each one connected to a different grid, (representing the main grid and/or various distributed generation systems) on the AC side, and linked together at DC side by suitable DC isolation modules. Each port of the UNIFLEX-PM system employs a conversion structure based on a three-phase 7-level AC-DC cascaded converter. Effective and accurate power flow control is demonstrated through simulation in Matlab and Simulink environment on a simplified model based on a two-port structure and using a stationery reference frame based control solution. Control of different power flow profiles has been successfully tested in numerous network conditions such as voltage unbalance, frequency excursions and harmonic distortion.

Published in:

Power Electronics and Motion Control Conference, 2008. EPE-PEMC 2008. 13th

Date of Conference:

1-3 Sept. 2008