TY - JOUR
T1 - A Cost-Effective and Low-Complexity Predictive Control for Matrix Converters under Unbalanced Grid Voltage Conditions
AU - Xiong, Wenjing
AU - Sun, Yao
AU - Lin, Jianheng
AU - Su, Mei
AU - Dan, Hanbing
AU - Rivera, Marco
AU - Guerrero, Josep M.
PY - 2019/4
Y1 - 2019/4
N2 - Due to no dc-link energy storage element in the matrix converter (MC), its input and output performances are highly sensitive to the unbalanced grid conditions. In order to mitigate the adverse effects of the unbalanced grid voltages, this paper proposes a simple and effective control strategy based on the finite-control set model predictive control (FCS-MPC). In this case, an extended instantaneous power theory is adapted to generate the source current references. As a result, both sinusoidal source currents and balanced output currents are ensured. Besides, complicated positive and negative sequence decomposition is avoided. Furthermore, an extended state observer (ESO) is designed to eliminate the grid voltages sensors, which not only estimates the grid voltages but also provides the delayed grid voltage information required for the source current reference calculation. The effectiveness of the proposed method is verified by the simulation and experimental results.
AB - Due to no dc-link energy storage element in the matrix converter (MC), its input and output performances are highly sensitive to the unbalanced grid conditions. In order to mitigate the adverse effects of the unbalanced grid voltages, this paper proposes a simple and effective control strategy based on the finite-control set model predictive control (FCS-MPC). In this case, an extended instantaneous power theory is adapted to generate the source current references. As a result, both sinusoidal source currents and balanced output currents are ensured. Besides, complicated positive and negative sequence decomposition is avoided. Furthermore, an extended state observer (ESO) is designed to eliminate the grid voltages sensors, which not only estimates the grid voltages but also provides the delayed grid voltage information required for the source current reference calculation. The effectiveness of the proposed method is verified by the simulation and experimental results.
KW - Extended state observer
KW - Finite-control set model predictive control
KW - Matrix converter
KW - Unbalanced gird voltages
UR - http://www.scopus.com/inward/record.url?scp=85064646594&partnerID=8YFLogxK
U2 - 10.1109/ACCESS.2019.2908446
DO - 10.1109/ACCESS.2019.2908446
M3 - Journal article
AN - SCOPUS:85064646594
SN - 2169-3536
VL - 7
SP - 43895
EP - 43905
JO - IEEE Access
JF - IEEE Access
M1 - 8678641
ER -