A robust grid current controller with grid harmonic and filter resonance damping capabilities using a closed-loop admittance shaping
Document typeConference report
Rights accessOpen Access
This paper presents a grid current control of a grid connected Voltage Source Converter (VSC) with an LCL filter. The control method enables to shape the input admittance of the converter in addition to track a given current reference. By specifying a low resistive admittance profile, a suitable controller is obtained by using an H8 synthesis, which will actively damp the filter resonance and the harmonics/inter-harmonics from the grid in a wide frequency range. Additionally, the proposed system presents good robustness with respect to grid uncertainty.
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CitationPerez, J., Cóbreces, S., Wang, X., Blaabjerg, F., Griño, R. A robust grid current controller with grid harmonic and filter resonance damping capabilities using a closed-loop admittance shaping. A: IEEE Applied Power Electronics Conference and Exposition. "Proceedings of the 2017 IEEE Applied Power Electronics Conference and Exposition 2017 (APEC 2017)". IEEE Press, 2017, p. 2625-2632.