Compact Switched Capacitor Multilevel Inverter (CSCMLI) With Self-Voltage Balancing and Boosting Ability

Authors:
Publisher website
Google Scholar
Abstract
This letter presents a compact switched capacitor multilevel inverter topology with reduced switch count and with self-voltage balancing and boosting ability. The operational mode of proposed CSCMLI is discussed. A comparative analysis in terms of number of switches and blocking voltages is presented against recent switched capacitor multilevel inverter topologies. Further to enhance the quality of the output voltage, a new level shifted multicarrier PWM modulation technique is recommended. This modulation technique produces low THD and high rms voltage. The proposed modulation technique is implemented in the nine-level CSCMLI with single dc source and two capacitors. The simulated and experimental results are verified for a switching frequency of 50Hz and 2.5 kHz using the proposed PWM control.
Funding Information
  • SRM Institute of Science and Technology (SRM/R/AR (A)/2015/126/866)

This publication has 11 references indexed in Scilit: