A suitable to the microgrid analysis approach for nonlinear modeling and control of an inverter interface | IEEE Conference Publication | IEEE Xplore

A suitable to the microgrid analysis approach for nonlinear modeling and control of an inverter interface


Abstract:

Distributed generation and smart grids in modern power systems have as basic building block a microgrid structure which is naturally an electric network with nodes and li...Show More

Abstract:

Distributed generation and smart grids in modern power systems have as basic building block a microgrid structure which is naturally an electric network with nodes and links. However, since a microgrid is an active network, in most of its nodes, different distributed generation units are usually connected through a power inverter interface. Thus, for the entire analysis and control of a microgrid, the deployment of a suitable model is needed that can certainly take into account the dynamic behavior of the power inverter devices. In the paper, it is shown that such a modeling for the inverter interface can be implemented by using a systematic impedance-admittance description. It is also shown that this formulation results in a nonlinear modeling, absolutely compatible with the rest microgrid description. Also, it is further proven that suitable model-based local current-loop control schemes, such as proportional-integral (PI) or simply proportional (P), can be effectively applied to stabilize the power electronic devices at their equilibrium. For the analysis purposes, a rigorous nonlinear Lyapunov-based method, with the control schemes included, is deployed to guarantee stability, firstly as input-to-state stability (ISS) and in a second stage as convergence to the equilibrium.
Date of Conference: 03-06 July 2017
Date Added to IEEE Xplore: 20 July 2017
ISBN Information:
Electronic ISSN: 2473-3504
Conference Location: Valletta, Malta

References

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