Design, analysis and implementation of a generalised topology for multilevel inverters with reduced circuit devices

Majareh, Seyed Hadi Latifi; Sedaghati, Farzad; Hosseinpour, Majid; Mousavi‐Aghdam, Seyed Reza

doi:10.1049/iet-pel.2019.0405

Cited by 27 publications

(11 citation statements)

References 24 publications

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“…The FPGA controller is used in model SIM 6.3 software to generate the switching pulses for the MOSFET switches based on APOD, POD and PD schemes (Siddique et al , 2019b; Majareh et al , 2019; Chandrasekaran et al , 2019). In this topology, LS-PWM can produce a higher quality output voltage waveform than the phase shift PWM strategy.…”

Section: Resultsmentioning

confidence: 99%

Review and design of modular multilevel inverter with modified multicarrier PWM techniques for solar PV applications

Chinnaraj

Vanchinathan²

2022

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Purpose These implementations not only generate excessive voltage levels to enhance the quality of power but also include a detailed investigating of the various modulation methods and control schemes for multilevel inverter (MLI) topologies. Reduced harmonic modulation technology is used to produce 11-level output voltage with the production of renewable energy applications. The simulation is done in the MATLAB/Simulink for 11-level symmetric MLI and is correlated with the conventional inverter design. Design/methodology/approach This paper is focused on investigating the different types of asymmetric, symmetric and hybrid topologies and control methods used for the modular multilevel inverter (MMI) operation. Classical MLI configurations are affected by performance issues such as poor power quality, uneconomic structure and low efficiency. Findings The variations in both carrier and reference signals and their performance are analyzed for the proposed inverter topologies. The simulation result compares unipolar and bipolar pulse-width modulation (PWM) techniques with total harmonic distortion (THD) results. The solar-fed 11-level MMI is controlled using various modulation strategies, which are connected to marine emergency lighting loads. Various modulation techniques are used to control the solar-fed 11-level MMI, which is connected to marine emergency lighting loads. The entire hardware system is controlled by using SPARTAN 3A field programmable gate array (FPGA) board and the least harmonics are obtained by improving the power quality. Originality/value The simulation result compares unipolar and bipolar PWM techniques with THD results. Various modulation techniques are used to control the solar-fed 11-level MMI, which is connected to marine emergency lighting loads. The entire hardware system is controlled by a SPARTAN 3A field programmable gate array (FPGA) board, and the power quality is improved to achieve the lowest harmonics possible.

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Section: Resultsmentioning

confidence: 99%

Review and design of modular multilevel inverter with modified multicarrier PWM techniques for solar PV applications

Chinnaraj

Vanchinathan²

2022

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“…A new structure of high-level multilevel converter is presented in [18]. The problem focuses on minimizing the number of power MOSFETs for a given number of levels.…”

Section: Introductionmentioning

confidence: 99%

“…Finally, in section 3, according to the described process, a MATLAB code was introduced. This code can calculate the best values for DC sources, and its most important feature is that it can be used for any other CHB-based topology [18], [28]. A method for removing the DC component of the output current of transformerless inverters is proposed [19].…”

Section: Introductionmentioning

confidence: 99%

Proposing a new method for calculating DC sources in an extended multilevel converter

Shahrestanaki,

Ildarabadi,

Zadehbagheri

et al. 2023

TELKOMNIKA

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In this paper, we propose a method for calculating the DC source amplitude in an extended multilevel inverter (MLI) structure so that the maximum number of levels and the output voltage waveform are as close as possible to the sinusoidal wave with minimum total harmonic distortion (THD). For the developed structure, three algorithms are suggested to determine the amounts of DC voltage resources. The first important point about choosing the right amounts for the DC resources is that the number of levels should be as large as possible, and the second important point is that the intervals between the levels should be the same throughout the waveform. By observing these two points, the output voltage waveform can be as near as possible to the sinusoidal wave that we want. In this study, we used iteration-based methods to find suitable values for DC sources. Simulation results are offered to confirm the capability of the extended multilevel converter. After we solved the problem through calculation and analysis, a code was written in MATLAB with the aim that this time the code will tell us for what values of DC sources we will have the largest number of levels and as we expected, the output of the MATLAB code confirmed the correctness of the calculations.

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“…ey are primarily focused on reducing the number of switches, driver circuits, voltage balancing, and complexity requirements [6]. MLI topologies are designed using a diversity of features, including DC sources, capacitors, semiconductor switches, modularity, output levels, peak inverse voltage (PIV), and total standing voltage (TSV) [7].…”

Section: Introductionmentioning

confidence: 99%

Switched Capacitor Based High Step-Up Multilevel Inverter with Self-Balancing Ability and Low Switching Stress

Mani

Basha

Ramkumar

et al. 2022

International Transactions on Electrical Energy Systems

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In this article, the switched capacitor (SC) based high step-up multilevel inverter is proposed with self-balancing capability. The proposed SC inverter topology is to step up the high output voltage from the very low input voltage without any bulky transformer. This proposed inverter generates single-phase AC voltage with a frequency of 50 Hz from a very low DC input voltage of 50 V with any intermediate DC-DC conversion stage. Hence, the proposed SC inverter is highly suitable for fuel cell, photovoltaic (PV) applications, and shunt active power filter (SAPF). To control the SC inverter, a multicarrier pulse width modulation (PWM) technique is engaged in the inverter. The high step-up voltage level can be achieved by the charging and discharging process of the SC. Furthermore, the stress voltage of the switches does not exceed the applied voltage and the total standing voltage of the inverter is greatly reduced without H-bridges. The comparative analysis of the proposed SC inverter is made for the components, peak inverse voltage (PIV), total standing voltage (TSV), boosting ability, and voltage balancing of capacitors. The main theme of the paper is producing a thirteen-level sinusoidal current with acceptable total harmonic distortion (THD) at different loads, low PIV, TSV, high boosting ability, and self-balancing of capacitors with fewer passive components. The whole system is examined by using MATLAB/Simulink.

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Design, analysis and implementation of a generalised topology for multilevel inverters with reduced circuit devices

Cited by 27 publications

References 24 publications

Review and design of modular multilevel inverter with modified multicarrier PWM techniques for solar PV applications

Review and design of modular multilevel inverter with modified multicarrier PWM techniques for solar PV applications

Proposing a new method for calculating DC sources in an extended multilevel converter

Switched Capacitor Based High Step-Up Multilevel Inverter with Self-Balancing Ability and Low Switching Stress

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