Multilevel Single-Phase Converter With Two DC Links

Freitas, Nayara B. de; Jacobina, Cursino B.; Cunha, Maxsuel Ferreira

doi:10.1109/tie.2019.2958280

Cited by 8 publications

(5 citation statements)

References 25 publications

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“…A similar transformer based configuration by cascading half-bridges is reported in [131]. A similar concept with two dc sources is reported in [162].…”

Section: Single-phase Transformer Based Reduced Components (Tbrc) Rsc-mlimentioning

confidence: 75%

A Survey on Reduced Switch Count Multilevel Inverters

Vemuganti¹,

Sreenivasarao

Ganjikunta

et al. 2021

IEEE Open J. Ind. Electron. Soc.

123

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An efficient and cost-effective power converter is a pre-requisite for the modern power applications. With the evolvement of matured medium power self-commutated switching devices, multilevel inverters (MLIs) are emerged as a promising solution for high-power medium-voltage applications. Though, MLIs are performing a promising role in industrial applications, their high device count, size, cost and control complexity have restricted their market penetration. To address the disadvantages of MLIs, researchers are continuously contributing to new generation topologies under the name of reduced switch count (RSC) MLIs. From the past decade, numerous RSC-MLIs topologies have been reported for various applications. Therefore, this paper presents a comprehensive review and classification of RSC-MLI topologies, in terms of their structure, features, limitations, suitability and selection for specific applications..

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“…A similar transformer based configuration by cascading half-bridges is reported in [131]. A similar concept with two dc sources is reported in [162].…”

Section: Single-phase Transformer Based Reduced Components (Tbrc) Rsc-mlimentioning

confidence: 75%

A Survey on Reduced Switch Count Multilevel Inverters

Vemuganti¹,

Sreenivasarao

Ganjikunta

et al. 2021

IEEE Open J. Ind. Electron. Soc.

123

View full text Add to dashboard Cite

show abstract

“…The use of a z-source network in the converter not only addresses the shoot-through issue but also helps in the adjustment of the required voltage gain. The existing topologies of the indirect AC-AC converters are reported in [17][18][19][20][21]. The stability analysis and several modulation schemes for a DC-link capacitor are stated in [17,18].…”

Section: Literature Reviewmentioning

confidence: 99%

“…The stability analysis and several modulation schemes for a DC-link capacitor are stated in [17,18]. The power quality-related issues in AC-DC-AC converters are reported in the multilevel converter approach in [19][20][21]. The DC-link capacitors employed in indirect AC-AC converters are electrolytic capacitors that are sizeable and have short operation life.…”

Section: Literature Reviewmentioning

confidence: 99%

A Single-Phase Compact-Sized Matrix Converter with Symmetrical Bipolar Buck and Boost Output Voltage Control

et al. 2022

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The development of single-phase symmetrical bipolar voltage gain matrix converters (MC) is growing rapidly as they find their application in power systems for dynamic restoration of line voltages, high voltage AC–DC converters, and variable frequency controllers for many industrial processes. However, the existing trend in matrix converter technology is a buck–boost operation that has inherently serious issues of high voltage and current surges or stresses. This is a big source of the high voltage and current rating of semiconductor switching devices. There is also a problem of high ripples both for voltage as well for current, requiring large size of filtering capacitors and inductors. The non-symmetrical control of the voltage gain increases the control complication. A large count of operating transistors is critical regarding their cost, size, and power conversion losses, as the space and cost required by their gate control circuits are much larger than the size and cost of the switching transistors. Thus, in this research work, a new single-phase MC is introduced only employing six fully controlled switching devices, ensuring similar operation or outputs as is obtained from the existing topologies that require the use of eight or more fully controlled switching devices, and the reduction by two or more switching transistors helps to compact the overall size and lower the overall cost. The separation in its voltage buck and boost operation enables smooth control of the voltage gain through duty cycle control. The low values of the voltage and current surges reduce the power rating and losses of the switching devices. The flow of the current in the filtering inductor is kept unidirectional to avoid the current interruption and reversal problem once the operation of the converter is abruptly switched from inverting to non-inverting and vice versa. All these factors are comprehensively detailed through the circuit’s description and comparative analysis. Simulation and practical results are presented to confirm the effectiveness of the developed circuit topology.

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“…The important phenomenon of MLI is to convert DC to AC and generate a high‐quality output voltage using many individual DC sources and a set of switching devices. As a result, they are focused in a variety of applications such as electric locomotives, renewable energy generation, and HVDC 3–7 …”

Section: Introductionmentioning

confidence: 99%

“…As a result, they are focused in a variety of applications such as electric locomotives, renewable energy generation, and HVDC. [3][4][5][6][7]…”

mentioning

confidence: 99%

A new single‐phase multilevel inverter with improved modulation technique

Rao

Suresh

Naik

et al. 2023

Circuit Theory & Apps

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SummaryThis article proposes a seventeen‐level (17L) inverter with a common leg configuration and an improved modulation technique. The proposed inverter uses only 10 switches, one toroidal core transformer, and one dc source. Therefore, the proposed design offers less control complexity with reduced cost and volume. Additionally, the suggested modulation technique improves the load voltage quality by minimizing the harmonic content. Simulation and laboratory studies are performed to confirm the proficiency of the suggested inverter with a new modulation technique. Further, a thorough comparison with recent transformer‐based circuits is carried out to highlight the benefits of the proposed structure.

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Multilevel Single-Phase Converter With Two DC Links

Cited by 8 publications

References 25 publications

A Survey on Reduced Switch Count Multilevel Inverters

A Survey on Reduced Switch Count Multilevel Inverters

A Single-Phase Compact-Sized Matrix Converter with Symmetrical Bipolar Buck and Boost Output Voltage Control

A new single‐phase multilevel inverter with improved modulation technique

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