Analysis of Switching Sequence Operation for Reduced Switch Multilevel Inverter With Various Pulse Width Modulation Methods

High power capacity and reliability are characteristics of multilevel inverters. The using a collection of DC sources can produce a terminal voltage that is very close to sinusoidal. The power quality can be improved by adding more levels, but this makes the control system more complicated and expensive. The number of power components in a multilevel inverter has been studied for decades. So, research needs to be done on multilevel inverter configurations to find ways to add levels with fewer power switches than with traditional topologies and those that have already been proposed. In this research, a new power-efficient arrangement of a flying-capacitor inverter is introduced. In order to illustrate the suggested topology, a seven-level multilevel inverter is constructed and demonstrated in a simplified form. Fewer power components, including power switches, capacitors, and gate driver circuits, are required in this topology than in other topologies described in the recent literature, which is one of its main advantages. The improvement mentioned above can be seen in the way this topology works, which is shown by the characteristics of the circuit. MATLAB/Simulink R2021a is used to simulate and verify the circuit to ensure the proposed topology is correct.

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“…For three or so more levels, a MCPWM is used. They may be divided into two categories: level shift and phase shift [28], [29].…”

Section: Modulation Techniquementioning

confidence: 99%

A new flying capacitor multilevel converter topology with reduction of power electronic components

Ahmed

Hassan

Saleh

2023

IJPEDS

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“…In POD, carrier waves on positive half side are in phase and carrier waves on negative half are in opposition displacement of 180 0 with positive half carrier waves. In PD, all carrier waves are in phase without any phase opposition [27]. Variations of carrier arrangement in APOD, POD and PD are shown in Figure 1.…”

Section: Pwm Strategy For Hexa MLImentioning

confidence: 99%

Real time simulation of reduced switch multilevel inverter with PWM switching sequence control

Kumar

2021

IJPEDS

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<span lang="EN-US">Reduction of switch count in symmetrical and asymmetrical reduced switch multilevel inverter designs has been proposed regularly with operation of conventional carrier-based pulse width modulation technique. In this study, a novel structure of symmetrical Hexa shaped model reduced switch seven level output inverter is proposed without any auxiliary switch and H-bridge. Proposed structure offers a smaller number of switch count and voltage sources which results in the cost and complexity reduction of its implementation. To operate the switching sequence of inverter from carrier based APOD, POD and PD methods, suitable logical expression to be realize which gained more prominence. Active utilization of two voltage sources in each mode of operation results in significant reduction of voltage stress across each switch is achieved. A comparative study of proposed MLI with various reduced switch MLIs has been presented. Initially, simulation model implementation has been carried out with MATLAB/Simulink and observed the performance parameters and THD. Simulation results are carried for the comparison of the results obtained in the real time work performed on OPAL-RT 5700 simulator</span><span lang="EN-US">.</span>

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“…The conventional cascaded n level MLI is depicted in Figure 1 with voltage sources, switches, and the inverters connected in cascading method. This cascaded inverter has 2(m-1) main switching devices, 2(m-1) main diodes, no clamping diodes, (m-1) (m-2)/2 number of DC bus capacitors and zero balancing capacitors [18].…”

Section: Conventional Systemsmentioning

confidence: 99%

A new multilevel inverter with reduced switch count for renewable power applications

Kim

Narasimha²,

Salkuti

2020

IJPEDS

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This paper proposes a new technique for a voltage source multilevel inverter (MLI) with reduced switch count, and it creates a smoother sinusoidal output waveform with reduced total harmonic distortion (THD). Therefore, the proposed technique identifies a better position in the list of multilevel converters used for power quality conditioners. Semiconducting devices are added to it if the number of levels increases. In this work, the topology of MLI with reduced number of switches is presented. A new MLI is proposed with lower number of switches and sources in order to achieve higher level. The proposed topology is framed out with the combination of three half bridge and a single H-bridge configuration. Detailed simulation results for 15-level inverter of single and three phase inverters are presented in this paper. Three phase 15-level inverter is developed by employing three isolated different renewable sources and 21 switches.

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Analysis of Switching Sequence Operation for Reduced Switch Multilevel Inverter With Various Pulse Width Modulation Methods

Cited by 7 publications

References 29 publications

A new flying capacitor multilevel converter topology with reduction of power electronic components

A new flying capacitor multilevel converter topology with reduction of power electronic components

Real time simulation of reduced switch multilevel inverter with PWM switching sequence control

A new multilevel inverter with reduced switch count for renewable power applications

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