What is it about?
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.
Featured Image
Why is it important?
The present study focuses solely on software-based control schemes that modify the modulation stage, and the paper surveys the existing and most popular compensation control schemes suitable for CHBMIs under unbalanced operation. The paper will categorize these control schemes based on their primary compensation purpose. It will provide a comprehensive guide for researchers and field engineers to select appropriate control schemes under the unbalanced operation of CHBMI topologies.
Perspectives
The proposed study has solely focused on the conventional cascaded H-bridge multilevel converters (CHBMICs). However, it is crucial to discuss the suitability and applicability of the compensation control methods presented in the study for other new topologies, such as Packed U-cell inverters (PUC) and Packed E-Cell Inverters
Dr Fils Pascal Mpomboum Lingom
Baylor University
Read the Original
This page is a summary of: A Comprehensive Review of Compensation Control Techniques Suitable for Cascaded H-Bridge Multilevel Inverter Operation with Unequal DC Sources or Faulty Cells, Energies, February 2024, MDPI AG,
DOI: 10.3390/en17030722.
You can read the full text:
Contributors
The following have contributed to this page
