TY - JOUR
T1 - Analysis and control of the modular multilevel matrix converter under unbalanced grid conditions
AU - Liu, Shenquan
AU - Saeedifard, Maryam
AU - Wang, Xifan
N1 - Publisher Copyright:
© 2013 IEEE.
PY - 2018/12
Y1 - 2018/12
N2 - The modular multilevel matrix converter (M3C) is a promising candidate for direct ac-to-ac conversion systems, particularly for low-frequency ac transmission. This paper is focused on the control of the M3C under unbalanced grid conditions. First, the current control structure of the M3C is improved, which not only enables independent control of common mode and circulating currents with a reduced number of controllers, but also enables a pure dc control system. Then, the arm imbalanced power caused by negative-sequence voltage and current is calculated, based on which a feedforward compensation strategy through circulating current is proposed. Performance and effectiveness of the proposed control and modulation strategies are verified by simulation studies conducted in the MATLAB/Simulink software environment.
AB - The modular multilevel matrix converter (M3C) is a promising candidate for direct ac-to-ac conversion systems, particularly for low-frequency ac transmission. This paper is focused on the control of the M3C under unbalanced grid conditions. First, the current control structure of the M3C is improved, which not only enables independent control of common mode and circulating currents with a reduced number of controllers, but also enables a pure dc control system. Then, the arm imbalanced power caused by negative-sequence voltage and current is calculated, based on which a feedforward compensation strategy through circulating current is proposed. Performance and effectiveness of the proposed control and modulation strategies are verified by simulation studies conducted in the MATLAB/Simulink software environment.
KW - Control strategy
KW - modular multilevel matrix converter (MC)
KW - unbalanced grid conditions
UR - https://www.scopus.com/pages/publications/85043354968
U2 - 10.1109/JESTPE.2018.2812723
DO - 10.1109/JESTPE.2018.2812723
M3 - 文章
AN - SCOPUS:85043354968
SN - 2168-6777
VL - 6
SP - 1979
EP - 1989
JO - IEEE Journal of Emerging and Selected Topics in Power Electronics
JF - IEEE Journal of Emerging and Selected Topics in Power Electronics
IS - 4
M1 - 8307184
ER -