Grid integration of modular multilevel inverter with improved performance parameters

Vanaja, Dishore Shunmugham; Stonier, Albert Alexander

doi:10.1002/2050-7038.12667

Cited by 21 publications

(12 citation statements)

References 39 publications

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“…The average voltage obtained at the output of the proposed inverter is 330 V.To integrate a PV system into the grid, the output voltage obtained from the PV system should satisfy the condition. where V G value is taken as 230 V: 44 As the obtained peak value for the proposed system is 330 V, which is greater than the calculated value 325:26 V ð Þ . Hence the proposed system is suitable for grid integration.…”

Section: Design Of Pv Systemmentioning

confidence: 75%

“…The average voltage obtained at the output of the proposed inverter is

330 normalV

.To integrate a PV system into the grid, the output voltage obtained from the PV system should satisfy the condition.

V_{pv} goodbreak= \sqrt{2} V_{G}

V_{pv} goodbreak= \sqrt 2 * 230 goodbreak= 325.26 normalV

where

V_{G}

value is taken as

230 normalV .

44 …”

Section: Design Of Solar Photovoltaic System and Three Level Boost Co...mentioning

confidence: 99%

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A novel control topology for grid‐integration with modular multilevel inverter

Vanaja¹,

Stonier²,

Moghassemi

2021

Int Trans Electr Energ Syst

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Summary This paper presents a novel control topology for a multilevel inverter with reduced number of power switches for achieving an increased number of levels in output voltage along with improved power quality. The diode clamped multilevel inverter configuration is modified and the gating signals are generated using selective harmonic optimization technique at fundamental frequency using Satin Bower Bird optimization (SBO). It enhances the quality of output voltage waveform with the reduction in total harmonic distortion (THD), less switching power losses, and better efficiency. The inverter is investigated for its competent operation capability on grid‐tied applications. Detailed simulation is conducted and results are presented for various load conditions. To validate the inverter operation, an experimental setup of the modified diode clamped modular inverter (MDCMI) interfacing the grid is presented. The loss analysis is carried out at the inverter and converter segments. Based on the analysis, the proposed control topology demonstrates the reliable and efficient operation of the modular inverter. From the results obtained it is evident that the proposed inverter design suits superlative for the grid applications.

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Section: Design Of Pv Systemmentioning

confidence: 75%

“…The average voltage obtained at the output of the proposed inverter is

330 normalV

.To integrate a PV system into the grid, the output voltage obtained from the PV system should satisfy the condition.

V_{pv} goodbreak= \sqrt{2} V_{G}

V_{pv} goodbreak= \sqrt 2 * 230 goodbreak= 325.26 normalV

where

V_{G}

value is taken as

230 normalV .

44 …”

Section: Design Of Solar Photovoltaic System and Three Level Boost Co...mentioning

confidence: 99%

A novel control topology for grid‐integration with modular multilevel inverter

Vanaja¹,

Stonier²,

Moghassemi

2021

Int Trans Electr Energ Syst

Self Cite

View full text Add to dashboard Cite

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“…MLIs are a viable solution for meeting the demand for higher power quality, higher voltage gain with less stress, and low power loss requirement. It has low dv/dt characteristics, superior efficiency, better EMC, modularity, and fault tolerance capabilities, 1 making them a better alternative for medium voltage (MV) and high voltage (HV) applications such as Static Var Compensator and large electrical drives 2,3 as well as in applications like renewable energy, 4,5 electric vehicles, 6 PV Grid 7,8 HVDC systems, the smart grid paradigm, and onboard power systems 9,10 . An extensive review of the multi‐level inverter has been presented by Kumari et al 11 …”

Section: Introductionmentioning

confidence: 99%

A triple boost 13‐level switched‐capacitor based multi‐level inverter topology for solar PV applications

Wasiq

Siddique

Sarwar

et al. 2022

Circuit Theory & Apps

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A High Gain High‐Level switched‐capacitor multilevel inverter with low voltage stress requires a lower number of devices at peak output voltage and a reduced number of circuit components along with an increase in voltage boosting capability. The features of the proposed topology include inherent boosting (Gain: 3) and self‐voltage balancing properties. To avoid complex algorithms, calculations and obtain superior quality output voltage the nearest level control (NLC) modulation technique is used. The extension of the topology has also been derived for the higher voltage gain and levels by adding four switches and one capacitor. The proposed topology has been compared with the recently developed topologies. The power loss analysis and simulation analysis has been done with different loading conditions under the environment of PLECS 4.2.18 and MATLAB® 2018a, respectively. A hardware bench has been set up to show the verification of the simulation results with hardware results.

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“…The inverters are classified as square‐wave inverter and multilevel inverter (MLI). The MLIs have gained more popularity because of the improved quality of the output AC waveform, reduced voltage stress on switches, and low electromagnetic interference 7,8,12‐18 . The output of MLI is a staircase waveform, which approximates the sinusoidal wave.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of switching angle calculation methods for multilevel inverters

Muthyala

Dhabale

2021

Int Trans Electr Energ Syst

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Summary A multilevel inverter produces an output to approximate a desired sine wave. The closeness of the output waveform to the sine wave depends on the logic applied for switching angle calculation, resulting in different switching angle calculation methods. In this paper, various switching angle calculation methods are compared based on of the parameters quantifying the quality of the output waveform. The main focus of this work is on the study of convergence of the output waveform to a smooth waveform as number of levels increases theoretically. The convergence is analytically proved and validated numerically by computing up to 201 levels. Also, a parameter quantifying the deviation of the output waveform from the sine wave is defined, and its closed form expression is derived. This parameter is strongly correlated to and computationally less expensive than the total harmonic distortion. Hence, the deviation is proposed as a better measure of the quality of the output wave form. The convergence and the deviation of the output waveform are also used as the basis of the comparison of different switching angle calculation methods. These two give a better insight into the switching angle calculation methods. The analysis presented in this paper provides a good understanding of various switching angle computation methods and helps in choosing an appropriate method for a given application.

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Grid integration of modular multilevel inverter with improved performance parameters

Cited by 21 publications

References 39 publications

A novel control topology for grid‐integration with modular multilevel inverter

A novel control topology for grid‐integration with modular multilevel inverter

A triple boost 13‐level switched‐capacitor based multi‐level inverter topology for solar PV applications

Comparative analysis of switching angle calculation methods for multilevel inverters

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