A Study of Asymmetrical Multilevel Inverter Topologies with Less Number of Devices and Low THD: A Review

Batool, Bibi Asma; Aliya,; Noor, Mahain; Athar, Syed Owais

doi:10.1109/pgsret.2018.8686018

Cited by 5 publications

(1 citation statement)

References 24 publications

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“…In Figure 1 c, the asymmetric type is two different circuits connected together, and the system output comes from their individual terminals. Study [ 18 ] discusses how to reduce the number of components to minimize the total harmonic distortion (THD) by constructing the multilevel inverter asymmetrically. Study [ 19 ] presents a classic totem pole structure with power factor correction (PFC), where a power switch is used instead of a diode to realize the bidirectional operation of the converter.…”

Section: Introductionmentioning

confidence: 99%

High-Performance Multi-Level Inverter with Symmetry and Simplification

Shieh,

Hwu,

Chen

2024

Micromachines

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This paper presents a high-performance, multilevel inverter with symmetry and simplification. This inverter is a single-phase, seven-level symmetric switched-capacitor inverter based on the concept of the double voltage clamping circuit connected to the half-bridge circuit. Above all, only a single DC power supply is used to achieve a single-phase inverter with seven levels and a voltage gain of three. In addition to analyzing the operating principle of the proposed switched-capacitor multilevel inverter in detail, the stability analysis and controller design are carried out by the state-space averaging method. The feasibility and effectiveness of the proposed structure are validated by some simulated results based on the PSIM simulation tool and by some experiments using FPGA as a control kernel, respectively. However, in this study, the switches were implemented by MOSFETs to meet a high switching frequency. These MOSFETs can be replaced by IGBTs in the motor drive applications so that the used switching frequency can be reduced.

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Section: Introductionmentioning

confidence: 99%

High-Performance Multi-Level Inverter with Symmetry and Simplification

Shieh,

Hwu,

Chen

2024

Micromachines

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Improved Harmonic Profile of Multilevel Inverter Topology with Shifted Carrier Modulation Technique

Vivek

Kumar

2021

Lecture Notes in Electrical Engineering

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A new symmetric modular eleven‐level inverter using single and double source unit for low voltage applications with reduced number of switches

Fakhri

Laali

Naderi

et al. 2023

IET Power Electronics

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This study proposes a modular multilevel inverter for low‐voltage applications, including ac‐coupled renewables and energy storage systems. These inverters require many switches and gate drivers in their structures, which complicates the control system, reduces efficiency, and increases costs. This study introduces a new modular multilevel inverter that can produce five levels of positive voltage using only six power switches and five DC voltage sources. The basic unit is composed of a single‐ and double‐source (SDS) unit. SDS reduces the number of power electronic components, such as the insulated gate bipolar transistors, freewheeling diodes, gate driver circuits, dc voltage sources, and blocking voltage by switches. The proposed topology can boost the number of output voltage levels and decrease the number of switching devices and voltage stress using some combinations of basic submodules. The performance of the proposed 11‐level single‐phase inverter is compared with that of the conventional structures and recent symmetric topologies considering the number of switches, cost, and efficiency. The waveform quality and both the voltage and current harmonic characteristics were determined in accordance with IEEE 519–2014. Finally, an 11‐level prototype was constructed to validate the theoretical analysis, feasibility, and effectiveness of the proposed inverter.

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A Study of Asymmetrical Multilevel Inverter Topologies with Less Number of Devices and Low THD: A Review

Cited by 5 publications

References 24 publications

High-Performance Multi-Level Inverter with Symmetry and Simplification

High-Performance Multi-Level Inverter with Symmetry and Simplification

Improved Harmonic Profile of Multilevel Inverter Topology with Shifted Carrier Modulation Technique

A new symmetric modular eleven‐level inverter using single and double source unit for low voltage applications with reduced number of switches

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