Grid connected inverter control by two-degree-of-freedom robust H ∞ repetitive

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Author list: Sriart W., Boonto S., Lenwari W., Naetiladdanon S.

Publisher: Hindawi

Publication year: 2014

ISBN: 9781479929924

ISSN: 0146-9428

eISSN: 1745-4557

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905399964&doi=10.1109%2fECTICon.2014.6839880&partnerID=40&md5=63c85f0c50b21eb10b50df8c0d7b1097

Languages: English-Great Britain (EN-GB)

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Abstract

This paper presents a robust control strategy for voltage controller of grid-connected inverter. The combining of feedforward control and H ∞ repetitive control is introduced to improve tracking performance and reduce periodic disturbance. The feedforward part of 2DOF controller extends gain and tracking bandwidth of the feedback controller when comparing to 1DOF controller. The proposed controller achieves the robust regulate voltage and tracking performance in dynamic responses. The controller is tested by simulation in MATLAB/SIMULINK. The results show the proposed controller obtains better performance under different scenarios (grid-connected mode and grid frequency variation). © 2014 IEEE.

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