A Comprehensive Review of Compensation Control Techniques Suitable for Cascaded H-Bridge Multilevel Inverter Operation with Unequal DC Sources or Faulty Cells

Pascal M. Lingom, Joseph Song-Manguelle (), Jean Maurice Nyobe-Yome and Mamadou L. Doumbia
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Pascal M. Lingom: Department of Electrical and Computer Engineering, University of Quebec, Trois-Rivieres, QC G8Z 4M3, Canada
Joseph Song-Manguelle: Department of Electrical and Computer Engineering, University of Quebec, Trois-Rivieres, QC G8Z 4M3, Canada
Jean Maurice Nyobe-Yome: Electrical Engineering Department, University of Douala, Douala 3QPW P9M, Cameroon
Mamadou L. Doumbia: Department of Electrical and Computer Engineering, University of Quebec, Trois-Rivieres, QC G8Z 4M3, Canada

Energies, 2024, vol. 17, issue 3, 1-18

Abstract: A cascaded H-bridge multilevel converter topology is the ultimate solution for energy conversion in various industrial applications due to its exceptional features, such as high modularity and fault-tolerant capability. However, two circumstances can lead to unbalanced operation of the inverter, potentially causing a decrease in its reliability and survivability: unequal DC voltage sources and faulty cells. In recent decades, scientists and engineers have conducted intensive research and meaningful studies to propose control solutions capable of maintaining the stable and continuous operation of the inverter under these operational concerns. Typically, each challenge is addressed separately using a distinct compensation control scheme in the existing literature. The paper aims to offer a comprehensive review of the existing compensation control schemes appropriate for CHBMIs operating under unbalanced conditions. It overviews the most popular control schemes and summarizes their usefulness in such scenarios. The theoretical foundations of each control scheme are presented and discussed, including their operating principles, implementation schemes, advantages, and disadvantages. The paper concludes with suggested future trends that require further research for CHBMIs’ continued growth and adoption in various industrial applications.

Keywords: cascaded H-bridge multilevel inverter; failed cells; unequal DC voltage sources; unbalanced operation; neutral-shift method; zero-sequence-injection method (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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