Yatindra Gopal, Kaibalya Prasad Panda, Akanksha Kumari, Julio C. Rosas-Caro

A Switched-Capacitor-Based 7-Level Self-Balancing High-Gain Inverter Employing a Single DC Source

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Modeling and Simulation
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This paper discloses a novel switched capacitor (SC)-based 7-level inverter with a single DC source. The proposed inverter has the ability to self-balancing the voltage of the capacitor without using a closed-loop voltage balancing circuit. Two capacitors are equally charged by the input source owing to the series-parallel charging and discharging continuously in a full cycle. The proposed 7-level SC inverter requires less number of switches, driver diodes, and capacitors and a lower number of semiconductor switches than most recently developed topologies. Furthermore, four out of the eight switches operate at the fundamental frequency, which simplifies the control scheme. A fundamental frequency switching scheme is used to control the output of the inverter. The self-balancing and voltage-boosting features of the proposed structure are validated on MATLAB/software platform and verified experimentally.

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