TY - JOUR
T1 - Simplified Four-Level Inverter-Based Single-Phase DSTATCOM Using Model Predictive Control
AU - Ye, Jian
AU - Gooi, Hoay Beng
AU - Zhang, Xinan
AU - Iu, Herbert H.C.
PY - 2020/12
Y1 - 2020/12
N2 - The conventional two-level inverter-based distribution static compensator (DSTATCOM) requires high switching frequency and fast digital signal processors (DSPs) to obtain smaller voltage/current ripples and low total harmonic distortion (THD). This increases the switching loss and computational burden. To solve such problems, this article proposes a simplified four-level (S4L) inverter-based DSTATCOM. The proposed inverter has a two-stage structure. The first stage produces three different voltage levels of full, two-Thirds, and one-Third of dc link voltage. These voltage levels are supplied to the second stage two-level inverter. Together with the zero voltage produced by the two-level inverter, the output of the proposed inverter can be four levels. With the same switching frequency and computational time, the S4L inverter-based DSTATCOM achieves much better performance than the conventional ones. Moreover, compared with the existing multilevel inverter-based DSTATCOMs, it is more cost-effective. To further enhance its performance, model predictive control (MPC) is employed. Experimental results are presented to verify the validity of the proposed system.
AB - The conventional two-level inverter-based distribution static compensator (DSTATCOM) requires high switching frequency and fast digital signal processors (DSPs) to obtain smaller voltage/current ripples and low total harmonic distortion (THD). This increases the switching loss and computational burden. To solve such problems, this article proposes a simplified four-level (S4L) inverter-based DSTATCOM. The proposed inverter has a two-stage structure. The first stage produces three different voltage levels of full, two-Thirds, and one-Third of dc link voltage. These voltage levels are supplied to the second stage two-level inverter. Together with the zero voltage produced by the two-level inverter, the output of the proposed inverter can be four levels. With the same switching frequency and computational time, the S4L inverter-based DSTATCOM achieves much better performance than the conventional ones. Moreover, compared with the existing multilevel inverter-based DSTATCOMs, it is more cost-effective. To further enhance its performance, model predictive control (MPC) is employed. Experimental results are presented to verify the validity of the proposed system.
KW - Model predictive control (MPC)
KW - simplified four-level (S4L) inverter
KW - single-phase distribution static compensator (DSTATCOM)
KW - total harmonic distortion (THD)
UR - http://www.scopus.com/inward/record.url?scp=85096033174&partnerID=8YFLogxK
U2 - 10.1109/JESTPE.2020.2964005
DO - 10.1109/JESTPE.2020.2964005
M3 - Article
AN - SCOPUS:85096033174
VL - 8
SP - 3382
EP - 3395
JO - IEEE Journal of Emerging and Selected Topics in Power Electronics
JF - IEEE Journal of Emerging and Selected Topics in Power Electronics
SN - 2168-6777
IS - 4
M1 - 8950101
ER -