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Modular multilevel converter passivity-based PI control suited for balanced and unbalanced grid conditions

Abstract : MMC Passivity-based PI Controller: A novel nonlinear global tracking controller was proposed by extending the regulation case. It consists in a linear PI that regulates two constructed signals with respect to which the incremental model of the MMC becomes passive. Estimation of x k : A closed-loop estimator was proposed to estimate the MMC variables in steady state needed as input for the non-linear controller. Such estimator consists on a virtual MMC energy model and both of the differential current reference equations that yielded from mathematical optimization using Lagrange multipliers.
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Gilbert Bergna, Matteo Pirro, Erik Berne, Amir Arzandé, Marta Molinas Cabrera, et al.. Modular multilevel converter passivity-based PI control suited for balanced and unbalanced grid conditions. 2015 IEEE International Conference on Industrial Technology (ICIT), Mar 2015, Séville, Spain. pp.3072-3078, ⟨10.1109/ICIT.2015.7125552⟩. ⟨hal-01262126⟩

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