A Single Source Cascaded Multilevel Inverter Based on Switched-capacitor with Series and Parallel Connectivity

Y. C. Fong, K. W.E. Cheng, S. Raghu Raman, Jiefeng Hu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

3 Citations (Scopus)


A cascaded switched-capacitor (SC) multilevel inverter (MLI) achieving voltage step-up and self-balancing is presented. Unlike the conventional cascaded H-bridge (CHB) inverters, only one voltage source is required for the proposed SCMLI to produce multilevel output voltage output with increased magnitude. By employing the proposed bipolar series-parallel conversion operation, each of the SC units can produce positive and negative voltage components. This eliminates the need of high voltage unfolding H-bridge. The voltage stress of individual components in the proposed topology can be restricted to the input voltage level. Therefore, this SCMLI provides modularity for forming high voltage AC output with low voltage components. In this paper, the key features and working principle of the proposed topology are elucidated with the support of simulation and measurements.

Original languageEnglish
Title of host publication2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages6
ISBN (Electronic)9781479973118
Publication statusPublished - 3 Dec 2018
Event10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States
Duration: 23 Sep 201827 Sep 2018

Publication series

Name2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018


Conference10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
Country/TerritoryUnited States


  • Multilevel inverter
  • Switched-capacitor circuit

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Control and Optimization
  • Computer Networks and Communications
  • Hardware and Architecture
  • Information Systems and Management

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