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Observer-based state-space current control for a three-phase grid-connected converter equipped with an LCL filter
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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IEEE Transactions on Industry Applications, Volume 50, issue 4, pp. 2700-2709
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This paper presents a state-space current control method for active damping of the resonance frequency of the LCL filter and setting the dominant dynamics of the converter current through direct pole placement. A state observer is used, where upon additional sensors are not needed in comparison with the conventional L filter design. The relationship between the system delay and instability caused by the resonance phenomenon is considered. Nyquist diagrams are used to examine the parameter sensitivity of the proposed method. The method is validated with simulations and experiments.
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Kukkola, J & Hinkkanen, M 2014, 'Observer-based state-space current control for a three-phase grid-connected converter equipped with an LCL filter', IEEE Transactions on Industry Applications, vol. 50, no. 4, pp. 2700-2709. https://doi.org/10.1109/TIA.2013.2295461