Design and Implementation of Transformer-Based Multilevel Inverter Topology With Reduced Components

Behara, Siva; Sandeep, N.; Yaragatti, Udaykumar R.

doi:10.1109/tia.2018.2836911

Cited by 55 publications

(27 citation statements)

References 21 publications

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“…Loss of a power electronic device consists of two parts: conduction loss and switching loss. According to (14), total loss of a power electronic converter is the sum of total conduction loss of all switches and diodes (9) and total switching loss of all switches and diodes (13) P losses = P c, avg + P s (14) Input power and efficiency of the converter can be calculated by (15), (16).…”

Section: Switching Lossmentioning

confidence: 99%

“…Also, it causes to the complexity of the system, high cost, reliability and efficiency reduction. Therefore, improving waveform quality should be together minimising switches count and gate starter circuits [13, 14]. Novel structures, which have been proposed to reduce switch numbers, can be divided into two major clusters as first which change the topology of the existent converters, and second which utilise unsymmetrical sources.…”

Section: Introductionmentioning

confidence: 99%

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Switch count reduced structure for symmetric bi‐directional multilevel inverter based on switch‐diode‐source cells

Hosseinpour

Seifi

Dejamkhooy

et al. 2020

IET Power Electronics

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Inverters as one of the most important elements of power systems have been profoundly developed in recent decades and their performance has attracted researches in control and structure point of view. In this study, a novel structure based on the switch-diode-source cell is proposed for a multilevel converter that is capable of bidirectional feeding. The proposed structure is presented for symmetrical mode and the number of power electronic devices is decreased in comparison with similar works. Considering recent proposed symmetrical structures, the proposed structure has the superior condition in terms of semiconductor switches and drivers count as well as switching loss. Also, total blocked voltage (TBV) of the proposed converter is compared with conventional and novel symmetrical converters. Then, switch costs of the proposed converter are compared with the structure that its TBV is the lowest. The performance of the proposed symmetrical seven-level converter is analysed and simulated in MATLAB/Simulink for both PWM and selective harmonic elimination switching methods. Not only the results are desirable, but also the experimental results of laboratory prototype validate the simulation results.

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Section: Switching Lossmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Switch count reduced structure for symmetric bi‐directional multilevel inverter based on switch‐diode‐source cells

Hosseinpour

Seifi

Dejamkhooy

et al. 2020

IET Power Electronics

View full text Add to dashboard Cite

show abstract

“…The control architecture shown in Fig.2 has two external control loops to process the error between the reference and the measured dc voltages. Afterwards, the total and the difference active powers are multiplied by variables K T and K inferred from equations (11) and 12 (14) represent the dq components of v s and v c respectively. Then, a decoupling stage based on (4) is used to obtain the average modulated voltages v u and v l .…”

Section: B Central Control Descriptionmentioning

confidence: 99%

Energy Balancing With Wide Range of Operation in the Isolated Multi-Modular Converter

2020

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The series-connection of modules in multilevel converters are prone to energy imbalances in the dc capacitor due to the differences between the power absorbed and consumed. In renewable energy applications where the primary source is directly connected to each module, energy imbalances can be even worse if the primary sources are affected by unpredictable weather conditions. Therefore, control strategies are required to compensate such energy imbalances, while maintaining the correct converter operation. Focusing our attention on a cascaded transformer multilevel inverter called Isolated Multi-Modular Converter, this paper introduces the combination of two control strategies aimed at providing a wide range of operation under imbalanced energy states. A general analytical model, including the regulation capability and differences with an existing strategy are presented to demonstrate the performance of the control proposed. The effectiveness of the proposal is validated through experimental results based on a three-phase multilevel prototype. INDEX TERMS Cascaded transformer multilevel inverter, dc energy balancing, isolated multi-modular converter, multilevel converters.

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“…To overcome the limitations of conventionally available multilevel inverters various novel topologies, for example, topologies implemented with transformers, 10,11 quasi Z‐source technique, 12,13 have being proposed in recent years. It is worth noting that switched‐capacitor multilevel inverters have gained more popularity; specifically, the series–parallel configuration is used in MLIs 14 .…”

Section: Introductionmentioning

confidence: 99%

Recent trends and review onswitched‐capacitor‐basedsingle‐stageboost multilevel inverter

Kumari

Siddique

Sarwar

et al. 2021

Int Trans Electr Energ Syst

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Summary Multilevel inverters are very popular in renewable energy applications. These inverters produce output voltages close to sinusoidal and have lower harmonics as compared to the conventional two‐level inverters as it also helps in reducing the size of the filter, thus makes the circuitry less complicated. In conventional multilevel inverter topologies, the number of devices increases with the increase of the number of output voltage levels, which in turn makes circuitry bulky and costly. Further, the boosting feature of the input voltage is also necessary for the application of multilevel inverters with renewable energy. Therefore, to reduce the count of devices, losses, and rating of devices, various switched‐capacitor multilevel inverter topologies are proposed. Switched‐capacitor multilevel inverter topologies (SCMLIs) can generate multiple voltage levels along with high voltage gain with a minimum number of devices. This paper gives a detailed overview of the recently introduced SCMLIs. The different SCMLIs have been categorized based on the number of levels and voltage gains. A detailed comparison has been introduced in this paper. Finally, few SCMLI topologies have been experimentally validated using the experimental results.

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Design and Implementation of Transformer-Based Multilevel Inverter Topology With Reduced Components

Cited by 55 publications

References 21 publications

Switch count reduced structure for symmetric bi‐directional multilevel inverter based on switch‐diode‐source cells

Switch count reduced structure for symmetric bi‐directional multilevel inverter based on switch‐diode‐source cells

Energy Balancing With Wide Range of Operation in the Isolated Multi-Modular Converter

Recent trends and review onswitched‐capacitor‐basedsingle‐stageboost multilevel inverter

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