TY - GEN
T1 - A New Kalman-Filter-Based Harmonic Current Suppression Method for the Virtual Oscillator Controlled Voltage Source Converters with LCL Filter
AU - Luo, Siyi
AU - Wu, Weimin
AU - Eftychios, Koutroulis
AU - Blaabjerg, Frede
AU - Chung, Henry Shu-Hung
PY - 2021
Y1 - 2021
N2 - 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.
AB - 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.
KW - harmonic suppression
KW - Kalman filter
KW - microgrids
KW - virtual oscillator control
UR - https://www.scopus.com/pages/publications/85123359684
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85123359684&origin=recordpage
U2 - 10.1109/ECCE47101.2021.9594965
DO - 10.1109/ECCE47101.2021.9594965
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 9781728161280
T3 - IEEE Energy Conversion Congress and Exposition, ECCE - Proceedings
SP - 316
EP - 322
BT - 2021 IEEE Energy Conversion Congress and Exposition (ECCE 2021) - PROCEEDINGS
PB - IEEE
T2 - 13th IEEE Energy Conversion Congress and Exposition (ECCE 2021)
Y2 - 10 October 2021 through 14 October 2021
ER -