TY - JOUR
T1 - An Improved Phasor Method for Modelling and Analysis of Modular Multilevel Matrix Converter
AU - Liu, Shenquan
AU - Zhao, Boyang
AU - Wang, Gang
AU - Wang, Xifan
N1 - Publisher Copyright:
© 1986-2012 IEEE.
PY - 2021/6
Y1 - 2021/6
N2 - modular multilevel matrix converter (M3C) has considerable application potential in motor driving and power systems, but its phasor model is rarely studied. This paper proposes a novel method for modelling and analysis of the M3C in the phasor domain. Firstly, an improved phasor method in matrix form is proposed for direct AC/AC MMC family. By including the frequency information into the phasor expression, it is capable of analysis towards interaction between AC variable groups with different frequencies. Secondly, based on the proposed phasor matrix method, the concept of two-dimensional phase-sequence is proposed to facilitate description and calculation of the AC variables in the 3-by-3 matrix-resembled circuit structure of M3C. Network of each phase-sequence is also derived. With the proposed methods, calculation burden for modelling and analysis of the M3C is significantly reduced. Then, the phasor model of M3C considering the DC, fundamental frequency and 2nd-order harmonic components is established. Finally, validation results with time-domain simulation is provided.
AB - modular multilevel matrix converter (M3C) has considerable application potential in motor driving and power systems, but its phasor model is rarely studied. This paper proposes a novel method for modelling and analysis of the M3C in the phasor domain. Firstly, an improved phasor method in matrix form is proposed for direct AC/AC MMC family. By including the frequency information into the phasor expression, it is capable of analysis towards interaction between AC variable groups with different frequencies. Secondly, based on the proposed phasor matrix method, the concept of two-dimensional phase-sequence is proposed to facilitate description and calculation of the AC variables in the 3-by-3 matrix-resembled circuit structure of M3C. Network of each phase-sequence is also derived. With the proposed methods, calculation burden for modelling and analysis of the M3C is significantly reduced. Then, the phasor model of M3C considering the DC, fundamental frequency and 2nd-order harmonic components is established. Finally, validation results with time-domain simulation is provided.
KW - AC/AC conversion
KW - Modular multilevel matrix converter
KW - fractional frequency transmission system
KW - phasor model
UR - https://www.scopus.com/pages/publications/85098795426
U2 - 10.1109/TPWRD.2020.3014473
DO - 10.1109/TPWRD.2020.3014473
M3 - 文章
AN - SCOPUS:85098795426
SN - 0885-8977
VL - 36
SP - 1744
EP - 1755
JO - IEEE Transactions on Power Delivery
JF - IEEE Transactions on Power Delivery
IS - 3
M1 - 9159920
ER -