Reduction of Common-Mode Voltage in Cascaded H-Bridge Inverter Under Faulty Conditions

Raki, Ashkan; Neyshabouri, Yousef; Iman‐Eini, Hossein; Aslanian, Mahdi

doi:10.1109/icee55646.2022.9827146

Cited by 3 publications

(4 citation statements)

References 16 publications

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“…If the H-bridge module is in normal operation, it is indicated as 1, and if a failure occurs, it is shown as 0.The state transition model shown in Fig. 2(a) can be expressed as a state equation (1). Assuming that Δt is very small, it can be described as a differential equation as in (2).…”

Section: Markov Based Reliability Analysismentioning

confidence: 99%

“…Through this, dv/dt stress is reduced, improving the efficiency and stability of the power conversion system. Multilevel inverters are widely used in medium-voltage and high-power applications [1]- [10]. However, the reliability may decrease as the number of switches increases to secure low total harmonic distortion (THD).…”

Section: Introductionmentioning

confidence: 99%

“…1, the H-bridge module is responsible for only one output voltage level, so the number of switching cycles in one cycle is one. On the other hand, Type 2 generates each output voltage level by combining Vdc, 3Vdc, and 9Vdc, so the number of switching increases compared to Type 1, and the resulting switching loss increases.…”

mentioning

confidence: 99%

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Reliability Analysis Based on Markov Model, Economic Feasibility, and Efficiency Comparison for a Cascaded H-Bridge Multilevel Inverter Capable of Generating 27 Levels

Lim,

Kim,

Kang

et al. 2024

IEEE Access

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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.INDEX TERMS Cascaded H-bridge multilevel inverter (CHBMI), redundancy, reliability, swapping control algorithm, total harmonic distortion (THD), voltage fluctuation rate.

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Section: Markov Based Reliability Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reliability Analysis Based on Markov Model, Economic Feasibility, and Efficiency Comparison for a Cascaded H-Bridge Multilevel Inverter Capable of Generating 27 Levels

Lim,

Kim,

Kang

et al. 2024

IEEE Access

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“…ULTILEVEL INVERTERS find applications in various fields, including renewable energy systems (such as solar and wind energy integration), electric vehicles, high-voltage direct current (HVDC) transmission systems, and mediumvoltage motor drives [1][2][3][4][5][6]. Their ability to generate highquality output waveforms makes them suitable for applications that require solid power quality.…”

Section: Introductionmentioning

confidence: 99%

African Vultures Optimization Algorithm-Based Selective Harmonic Elimination for Multi-level Inverter

BEKTAŞ

2023

Balkan Journal of Electrical and Computer Engineering

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Çok seviyeli inverterler (ÇSİ), iyileştirilmiş çıkış dalga formu ve azaltılmış harmonik distorsiyon gibi avantajlarıyla dikkat çekmektedir. Ancak, ÇSİ sistemlerinde hala harmonik sorunu bulunmaktadır. Araştırmacılar, bu sorunu çözmek için seçici harmonik eliminasyonu-darbe genişliği modülasyonu (SHE-PWM) tekniğini kullanmıştır. Ancak, seçilen harmoniklerin ortadan kaldırılması için gereken SHE denklemleri karmaşık ve yoğun hesaplamalar gerektirir. Bu makalede, ÇSİ'lerde SHE denklemlerini çözmek için nispeten yeni bir Afrika Akbabaları Optimizasyonu (AVO) algoritması sunulmaktadır. AVO tabanlı SHE-PWM tekniği, 7, ve 11 seviyeli kaskad ÇSİ üzerinde test edilmiştir. Önerilen algoritma, 0.1 ile 1.0 modülasyon indeksi aralığında uygun çözümler bulmayı başarmıştır. 0.5 ile 1.0 arasındaki modülasyon indeksi aralığında seçilen harmoniklerin başarılı bir şekilde yok edilebildiği ve temel gerilimin %0.5'ten daha az hata ile kontrol edilebildiği gözlenmiştir.

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A Fault-Tolerant Strategy for Safe Operation of Cascaded H-Bridge Multilevel Inverter Under Faulty Condition

Raki

Neyshabouri

Aslanian

et al. 2023

IEEE Trans. Power Electron.

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Reduction of Common-Mode Voltage in Cascaded H-Bridge Inverter Under Faulty Conditions

Cited by 3 publications

References 16 publications

Reliability Analysis Based on Markov Model, Economic Feasibility, and Efficiency Comparison for a Cascaded H-Bridge Multilevel Inverter Capable of Generating 27 Levels

Reliability Analysis Based on Markov Model, Economic Feasibility, and Efficiency Comparison for a Cascaded H-Bridge Multilevel Inverter Capable of Generating 27 Levels

African Vultures Optimization Algorithm-Based Selective Harmonic Elimination for Multi-level Inverter

A Fault-Tolerant Strategy for Safe Operation of Cascaded H-Bridge Multilevel Inverter Under Faulty Condition

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