Reliability analysis based on Markov model, economic feasibility, and efficiency comparison for a cascaded H-bridge multilevel inverter capable of generating 27 levelsopen access
- Authors
- Lim, Seong jin; Kim, Sun-pil; Kang, Feel-soon; Song, Sung-Geun
- Issue Date
- 2024
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- Cascaded H-bridge multilevel inverter (CHBMI); redundancy; reliability; swapping control algorithm; total harmonic distortion (THD); voltage fluctuation rate
- Citation
- IEEE Access, v.12, pp 1 - 1
- Pages
- 1
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE Access
- Volume
- 12
- Start Page
- 1
- End Page
- 1
- URI
- https://scholarworks.gnu.ac.kr/handle/sw.gnu/69676
- DOI
- 10.1109/ACCESS.2024.3363832
- ISSN
- 2169-3536
- Abstract
- A cascaded H-bridge multilevel inverter (CHBMI) can increase the number of output voltage levels by increasing the number of H-bridge modules, thereby achieving low dv/dt stress and good total harmonic distortion (THD). However, as switching devices increase due to increased H-bridge modules, control becomes complicated, and the failure rate may rise. This paper analyzes the reliability of a CHBMI that can generate 27 levels, including failures in some H-bridge modules. The Markov model of a method with 13 H-bridge modules using a swapping control algorithm (Type 1) and a form with 3 H-bridge modules with input voltage sources of Vdc, 3Vdc, and 9Vdc (Type 2) was obtained, and reliability was calculated. To analyze the effect of redundancy on reliability, a reliability analysis is also performed for the two cases where two H-bridge modules are added to Type 1. Finally, we aim to help select a 27-level inverter method by comparing economic feasibility and switching loss based on the cost model. Authors
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Collections - 융합기술공과대학 > Division of Mechatronics Engineering > Journal Articles
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