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Model predictive current control for high-power grid-connected converters with output LCL filter

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4 Author(s)
Hernan Miranda ; Department of Energy Technology Aalborg University Aalborg, Denmark ; Remus Teodorescu ; Pedro Rodriguez ; Lars Helle

A model predictive control strategy for a high-power, grid connected 3-level neutral clamped point converter is presented. Power losses constraints set a limit on commutation losses so reduced switching frequency is required, thus producing low frequency current harmonics. To reduce these harmonics an LCL filter is used. The proposed control strategy allows control of the active and reactive power fed into the grid, reduce the switching frequency within acceptable operational margins and keep balance of the DC-link capacitor voltages while avoiding excitation of the filter resonance frequencies.

Published in:

Industrial Electronics, 2009. IECON '09. 35th Annual Conference of IEEE

Date of Conference:

3-5 Nov. 2009