Implementation and Comparison of Symmetric and Asymmetric Multilevel Inverters for Dynamic Loads

Dhanamjayulu, C.; Meikandasivam, S.

doi:10.1109/access.2017.2775203

Cited by 97 publications

(65 citation statements)

References 21 publications

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“…The proposed topology in comparison with classic and recently introduced topologies has a lower number of switches for the same number of output voltage levels. The comparison of the proposed topology and other symmetric topologies [16][17][18][19][20][21][22][23][24][25][26][27] in terms of switch and driver count for different voltage levels are shown in Figures 10 and 11, respectively. In Figure 10, the slope of every line is proportional to the cost and volume of the converter.…”

Section: Comparisons With Other Structuresmentioning

confidence: 99%

A bidirectional diode containing multilevel inverter topology with reduced switch count and driver

Hosseinpour

Seifi

Rahimian

2020

Circuit Theory & Apps

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In this paper, a bidirectional diode containing multilevel inverter is introduced to reduce the number of switching elements especially in the case of a high number of output voltage levels. In comparison with classic and recently introduced symmetrical topologies, which are trying to reduce the switch count, this topology has a lower number of semiconductor switches in the same number of output voltage levels. This makes the proposed inverter to be a suitable choice for medium voltage applications like renewable energy applications as well as medium voltage electric drives. Moreover, it can be used in a cascaded configuration for high voltage levels. To depict the performance of the proposed structure, a comprehensive comparison is made between this topology and classic and recently proposed symmetric topologies in terms of switch and gate driver count, power losses, and cost. The performance of the proposed symmetrical 11-level converter is analyzed 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: Comparisons With Other Structuresmentioning

confidence: 99%

A bidirectional diode containing multilevel inverter topology with reduced switch count and driver

Hosseinpour

Seifi

Rahimian

2020

Circuit Theory & Apps

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“…Then, the recommended asymmetrical topology compared with existing topologies; every component calculated for a similar number of voltage levels. While all the existing topologies would require 10 to 16 switches and 4 to 6 DC sources to deliver a 31‐level output voltage, the proposed topology requires only 12 switches and 4 sources with low THD. The drastically reduced requirement of switches in the proposed topology compared with the conventional topology to produce better results makes it more desirable for a future renewable application.…”

Section: Comparisonmentioning

confidence: 99%

“…Every functional units likewise considered, as a MLI. Initially, the fundamental block topology projected into the proposed higher‐level topology tested with resistive, inductive loads and dynamic load changes . Finally, numerical simulation modeling is carried out using MATLAB/Simulink software and a laboratory scale hardware is implemented to verify the practicability of the system.…”

Section: Introductionmentioning

confidence: 99%

Design and implementation of a novel asymmetrical multilevel inverter optimal hardware components

Dhanamjayulu

Arunkumar

Pandian

et al. 2019

Int Trans Electr Energ Syst

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Summary The paper developed a new topology for the single‐phase asymmetrical cascaded multilevel inverter and realized with optimal hardware components. This solution aids to substantially reducing the number of semiconductor switches and DC sources, henceforth reduces the gate drivers requirement. The proposed multilevel inverter creates a waveform with a high number of staircase voltage levels compromising with low total harmonic distortion at the outputs. The configuration is asymmetric and generates thirty‐one level different output voltages. MATLAB/Simulink numerical software used to verify the modeling and validated experimentally in laboratory scale prototype. The testing of the inverter executed under both steady state and dynamic load changing conditions. A set of numerical and experimental results are provided and shown clear evidence of satisfying the expectation with theoretical development. The proposed converter is well suitable for renewable energy applications. KEYWORDS asymmetrical invertermultilevel inverterrenewable energystaircase modulation techniquetotal harmonic distortionvoltage source inverter.

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“…Research focus has turned towards the improvement on inverter side and few results from various research paper have focused on the improvement of number of levels. As the number of levels in the inverter increases, the combined output waveform has a greater number of output steps [14]- [17].…”

Section: Introductionmentioning

confidence: 99%

Symmetrically Modified Laddered H Bridge Multilevel Inverter with Reduced Configurational Parameters

D*¹,

Premkumar²,

Thamizhselvan³

et al. 2019

IJEAT

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Multilevel Inverters are incorporated in this modern world for medium and high-level applications for its adaptability to improve power quality problems. Its necessity is growing big in developing newer techniques and topologies for efficient implementation of DC to AC conversion system. Developing the MLI using less active switching components, less switching losses on active devices and improvement of number of voltage levels is always a tough task. A step forward to solve this problem is to modify the existing H-bridge multilevel inverter to produce Symmetrically Modified Laddered H-Bridge Multi-level Inverter (SMLHB -MLI). Comparative analysis has been carried out with other reputed existing MLI topologies to find out the performance and reduces complexity problem in inverter based on reduced switching methods in inverter side, reduction of active switching components and power diodes

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Implementation and Comparison of Symmetric and Asymmetric Multilevel Inverters for Dynamic Loads

Cited by 97 publications

References 21 publications

A bidirectional diode containing multilevel inverter topology with reduced switch count and driver

A bidirectional diode containing multilevel inverter topology with reduced switch count and driver

Design and implementation of a novel asymmetrical multilevel inverter optimal hardware components

Symmetrically Modified Laddered H Bridge Multilevel Inverter with Reduced Configurational Parameters

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