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arXiv · 1902.10273

Robust Passivity-Based Control of Boost Converters in DC Microgrids

Michele Cucuzzella·Riccardo Lazzari·Yu Kawano·Krishna C. Kosaraju·Jacquelien M. A. Scherpen
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Abstract

This work deals with the design of a robust and decentralized passivity-based control scheme for regulating the voltage of a DC microgrid through boost converters. A Krasovskii-type storage function is proposed and a (local) passivity property for DC microgrids comprising unknown 'ZIP' (constant impedance 'Z', constant current 'I' and constant power 'P') loads is established. More precisely, the input port-variable of the corresponding passive map is equal to the first-time derivative of the control input. Then, the integrated input port-variable is used to shape the closed loop storage function such that it has a minimum at the desired equilibrium point. Convergence to the desired equilibrium is theoretically analyzed and the proposed control scheme is validated through experiments on a real DC microgrid.

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Michele Cucuzzella, Riccardo Lazzari, Yu Kawano, Krishna C. Kosaraju, Jacquelien M. A. Scherpen. 2019-02-27. Robust Passivity-Based Control of Boost Converters in DC Microgrids. https://arxiv.org/abs/1902.10273

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