TY - JOUR
T1 - A Novel Multilevel DC/AC Inverter Based on Three-Level Half Bridge with Voltage Vector Selecting Algorithm
AU - Zhang, Chao
AU - Gao, Zhigang
N1 - Publisher Copyright:
© 2013 IEEE.
PY - 2019
Y1 - 2019
N2 - A novel multilevel inverter based on a three-level half bridge is proposed for the DC/AC applications. For each power cell, only one DC power source is needed and five-level output AC voltage is realized. The inverter consists of two parts, the three-level half bridge, and the voltage vector selector, and each part consists of the four MOSFETs. Both positive and negative voltage levels are generated at the output, thus, no extra H bridges are needed. The switches of the three-level half bridge are connected in series, and the output voltages are ( $V-{o}$ , $V-{o}$ /2, and 0). The voltage vector selector is used to output minus voltages ( $-V-{o}$ and $-V-{o}$ /2) by different conducting states. With complementary working models, the voltages of the two input capacitors are balanced. Besides, the power cell is able to be cascaded for more voltage levels and for higher power purpose. The control algorithm and two output strategies adopted in the proposed inverter are introduced, and the effectiveness is verified by simulation and experimental results.
AB - A novel multilevel inverter based on a three-level half bridge is proposed for the DC/AC applications. For each power cell, only one DC power source is needed and five-level output AC voltage is realized. The inverter consists of two parts, the three-level half bridge, and the voltage vector selector, and each part consists of the four MOSFETs. Both positive and negative voltage levels are generated at the output, thus, no extra H bridges are needed. The switches of the three-level half bridge are connected in series, and the output voltages are ( $V-{o}$ , $V-{o}$ /2, and 0). The voltage vector selector is used to output minus voltages ( $-V-{o}$ and $-V-{o}$ /2) by different conducting states. With complementary working models, the voltages of the two input capacitors are balanced. Besides, the power cell is able to be cascaded for more voltage levels and for higher power purpose. The control algorithm and two output strategies adopted in the proposed inverter are introduced, and the effectiveness is verified by simulation and experimental results.
KW - Bridge circuits
KW - DC-AC power converters
KW - modular multilevel converters
KW - pulse width modulation converters
KW - voltage control
UR - http://www.scopus.com/inward/record.url?scp=85069796640&partnerID=8YFLogxK
U2 - 10.1109/ACCESS.2019.2926540
DO - 10.1109/ACCESS.2019.2926540
M3 - Article
AN - SCOPUS:85069796640
SN - 2169-3536
VL - 7
SP - 88733
EP - 88742
JO - IEEE Access
JF - IEEE Access
M1 - 8756242
ER -