A novel third-harmonic elimination method for VOC-based three-phase DC/AC inverterA novel third-harmonic elimination method for VOC-based three-phase DC/AC inverter Δημοσίευση σε Συνέδριο Conference Publication 2022-01-072020enThis project was funded by the Operational Program “Competitiveness, Entrepreneurship and Innovation 2014-2020” (co-funded by the European Regional Development Fund) and managed by the General Secretariat of Research and Technology, Ministry of Education, Research, and Religious Affairs under the project eSOLAR/T7ΔKI-00066.Virtual oscillator control (VOC) has been proposed for Microgrids, since compared to the droop control method, VOC has a faster transient response. However, the output voltage of the conventional VOC always contains the third-harmonic. Thus, in the grid-connected mode, the third-harmonic voltage causes the generation of significant third-harmonic current which is injected into the power grid. In this paper, by analyzing the nonlinear oscillator and simplifying the nonlinear current source in the oscillator, a novel VOC for three-phase DC/AC inverter is proposed, where the third-harmonic of the oscillator output voltage can be successfully eliminated, whether in the islanded or grid-connected mode of operation. In addition, compared with the traditional VOC, the dynamic response of the proposed VOC-based inverter can be significantly improved, especially in the islanded mode. Experimental device designed on the DSPACE DS1202 is developed to verify the feasibility of the proposed strategy.http://creativecommons.org/licenses/by/4.0/3170-3175The 46th Annual Conference of the IEEE Industrial Electronics Society Luo Siyi Wu Weimin Chung Henry Blaabjerg, Frede, 1963- Koutroulis Eftychios Κουτρουλης Ευτυχιος Institute of Electrical and Electronics Engineers Microgrids Virtual oscillator control Harmonic elimination Grid synchronization