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Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/F0AA36C0-4F5F-4F97-8E20-9E847D4C150F | ||
| Year | 2021 | ||
| Type of Item | Conference Full Paper | ||
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| Bibliographic Citation | S. Luo, W. Wu, E. Koutroulis, F. Blaabjerg and H. S. -H. Chung, "A new Kalman-filter-based harmonic current suppression method for the virtual oscillator controlled voltage source converters with LCL filter," in 2021 IEEE Energy Conversion Congress and Exposition (ECCE), Vancouver, BC, Canada, 2021, pp. 316-322, doi: 10.1109/ECCE47101.2021.9594965. https://doi.org/10.1109/ECCE47101.2021.9594965 | ||
| Appears in Collections |
Virtual Oscillator Control (VOC) is a new control strategy applied to grid-connected inverters, which can achieve fast dynamics and low harmonics in island mode. This paper proposes a new harmonic currents elimination strategy for virtual oscillator controller (VOC)-based voltage source converters (VSC) connected to a distorted electrical grid. In order to achieve the control goal, the Kalman filter is used to replace the traditional band-pass filter to extract the harmonic components of the grid voltage at the common coupling point (PCC). From the impedance-based analysis, the equivalent output impedance of the DC/AC inverter has been significantly enhanced at the selected low harmonic frequency. It is worth noting that the system can remain stable within a considerable range of equivalent grid impedance. Simulation results in MATLAB/Simulink have verified the effectiveness of the proposed method.
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