TY - JOUR
T1 - Switched capacitors 9-level module (SC9LM) with reduced device count for multilevel DC to AC power conversion
AU - Bhatnagar, Pallavee
AU - Agrawal, Rekha
AU - Dewangan, Niraj Kumar
AU - Jain, Sanjay K.
AU - Gupta, Krishna Kumar
N1 - Publisher Copyright:
© The Institution of Engineering and Technology 2019.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - Switched capacitors (SCs)-based modules are being increasingly used for multilevel DC to AC power conversion, especially for low input voltage applications. Many of these topologies operate in two stages involving H-bridge switches, which endure high-voltage stress. The SC 9-level module (SC9LM) presented here operates in a single stage with one DC source and two capacitors. In addition, the peak inverse voltage of all power switches is confined to the voltage of the input DC source. The proposed 9-level module ensures a reduced number of power switches. In addition, with appropriate utilisation of states, two of the eleven switches in the module operate at fundamental switching frequency, thereby minimising the switching losses. A single SC9LM achieves a voltage gain of two. The proposed module is validated through circuit analysis followed by simulation and experimental results.
AB - Switched capacitors (SCs)-based modules are being increasingly used for multilevel DC to AC power conversion, especially for low input voltage applications. Many of these topologies operate in two stages involving H-bridge switches, which endure high-voltage stress. The SC 9-level module (SC9LM) presented here operates in a single stage with one DC source and two capacitors. In addition, the peak inverse voltage of all power switches is confined to the voltage of the input DC source. The proposed 9-level module ensures a reduced number of power switches. In addition, with appropriate utilisation of states, two of the eleven switches in the module operate at fundamental switching frequency, thereby minimising the switching losses. A single SC9LM achieves a voltage gain of two. The proposed module is validated through circuit analysis followed by simulation and experimental results.
UR - https://www.scopus.com/pages/publications/85072999824
UR - https://www.scopus.com/inward/citedby.url?scp=85072999824&partnerID=8YFLogxK
U2 - 10.1049/iet-epa.2019.0053
DO - 10.1049/iet-epa.2019.0053
M3 - Article
AN - SCOPUS:85072999824
SN - 1751-8660
VL - 13
SP - 1544
EP - 1552
JO - IET Electric Power Applications
JF - IET Electric Power Applications
IS - 10
ER -