Parameter estimation of an LCL filter for control of grid converters

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Abstract

Model-based control techniques are frequently used with grid-connected converters. This paper proposes a method for identifying model parameters of an LCL filter connected to a grid converter for control purposes. In identification, a discrete-time autoregressive moving average with exogenous input (ARMAX) model structure is used and closed-loop current control is considered. The resulting discrete-time model parameters are translated into the continuous-time physical parameters (inductance and capacitance values of the filter) by comparing the estimated discrete-time model with the analytical discrete-time model. Simulation and experimental results show that the proposed method yields good parameter estimates that are suitable for control tuning.

Details

Original languageEnglish
Title of host publication9th International Conference on Power Electronics (ICPE 2015-ECCE Asia)
Publication statusPublished - 1 Jun 2015
MoE publication typeA4 Article in a conference publication

    Research areas

  • identification, LCL filter, physical parameters, self commissioning

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