Abstract:Multilevel inverters play a vital role in the industrial and renewable energy sectors due to their flexibility in synthesizing sinusoidal waveforms using a low-pass filter with a medium voltage range. It has several drawbacks, such as a higher number of power component requirements and voltage balancing problems. In this study, a new structure for multilevel inverters has been developed to offer good power quality with minimum number of switching devices and gate driver circuits. The proposed structure is conf… Show more
“…It is proven that the proposed structure has the least device count in the current conduction path than other recent MLIs. Figure 4 Comparison chart for switching devices requirement of proposed topology against recent MLIs 34 – 41 for 33-level inverter. Figure 5 Comparison chart for gate drivers requirement of proposed topology against recent MLIs for 33-level inverter.…”
Section: Specifications Of Driver Circuitmentioning
confidence: 99%
“… Comparison chart for switching devices requirement of proposed topology against recent MLIs 34 – 41 for 33-level inverter. …”
Section: Specifications Of Driver Circuitmentioning
The concept of an isolated DC source cascaded multilevel inverter finds good solutions for generating quality output voltage for low-medium power applications. It shapes the output voltage from three levels into a number of steps closer to a sinusoidal shape using small DC sources or batteries. Several advantages have been sighted like lower voltage stress and bearing noise, and lesser THD. However, a common issue in the MLIs is the total components required which increase with the rise in voltage levels. This paper proposes a three-phase MLI design having several isolated quad voltage source modules including an H-Bridge inverter. The design suggested claims reduced switching components for current conduction paths showing improved output quality. The operational features of the suggested MLI have been analyzed using Matlab/Simulink software, furthermore, an experimental module is constructed for demonstrating the effectiveness of the simulated results.
“…It is proven that the proposed structure has the least device count in the current conduction path than other recent MLIs. Figure 4 Comparison chart for switching devices requirement of proposed topology against recent MLIs 34 – 41 for 33-level inverter. Figure 5 Comparison chart for gate drivers requirement of proposed topology against recent MLIs for 33-level inverter.…”
Section: Specifications Of Driver Circuitmentioning
confidence: 99%
“… Comparison chart for switching devices requirement of proposed topology against recent MLIs 34 – 41 for 33-level inverter. …”
Section: Specifications Of Driver Circuitmentioning
The concept of an isolated DC source cascaded multilevel inverter finds good solutions for generating quality output voltage for low-medium power applications. It shapes the output voltage from three levels into a number of steps closer to a sinusoidal shape using small DC sources or batteries. Several advantages have been sighted like lower voltage stress and bearing noise, and lesser THD. However, a common issue in the MLIs is the total components required which increase with the rise in voltage levels. This paper proposes a three-phase MLI design having several isolated quad voltage source modules including an H-Bridge inverter. The design suggested claims reduced switching components for current conduction paths showing improved output quality. The operational features of the suggested MLI have been analyzed using Matlab/Simulink software, furthermore, an experimental module is constructed for demonstrating the effectiveness of the simulated results.
“…THD determines the output voltage quality of an inverter. Usually, the organizations have fixed some limiting values for THD Sivamani and Mohan (2022). Different methods have been implemented for improving the quality of an output voltage.…”
Considering present shortage of fossil fuels and discharges of ozone harming substances, power developed from Renewable Energy Sources (RES) is identified as the excellent choice for producing the electricity. The characteristic of an inverter is to transform the dc power into ac power to fulfill out the requirements of load. Despite its advantage, the presence of harmonics in the output voltage reduces both the efficiency and the performance of the inverter. Several researches have been carried out since last three decades for eliminating the harmonics. Based upon several researches, it reveals that the Selective Harmonic Elimination Pulse-width Elimination technique (SHEPWM) has proven to be the best in eliminating lower order harmonics. But when calculus based methods are used for solving the non-linear transcendental equations, this technique has shown some complications. Artificial Intelligence (AI) techniques appear to be better in solving the above said equations. This review paper provides the performance of some AI techniques used for eliminating the harmonics in inverters. Based upon the information collected from various literatures and its results, conclusion has been made.
“…An ANN algorithm with three layer network to track maximum voltage from solar PV panel is suggested Ocran et al (2005), Sedaghati et al (2012), Suganya et al (2014) without voltage sensors, current sensors, and complex mathematical calculations and got higher efficiency. A cascading two layer ANN is proposed Sherif and Seshadri (2018) to track MPP from solar PV with an assumption of 10 neurons per layer and duty cycle generated from binary outputs are responsible for switching operations of inverter Chitrakala et al (2017), Mohan et al (2017), Krithiga and Mohan (2022), Sivamani and Mohan (2022), Chitrakala et al (2017).…”
In past few decades, solar energy plays a vital role in energy production among the different renewable energy resources. In shaded/unshaded photovoltaic (PV) systems, tracking of maximum power under different environmental conditions is provided by maximum power point tracking (MPPT). In recent years many works available on different types of MPPT techniques to track maximum power from PV systems with own pros and cons. This article comprehensively reviews the different traditional methods like perturb and observation (P&O), open circuit voltage (OCV), short circuit current (SCC), hill climbing (HC), incremental conductance (IC). Also recall the advanced MPPT techniques like particle swarm optimization (PSO), grey wolf optimization (GWO), cuckoo search (CS), artificial neural networks (ANN), fuzzy logic controller (FLC) available in literature. This review is conducted based on implementation, accuracy, tracking speed, cost, merits, and demerits of each technique. Traditional MPPT methods can’t able to track global maximum power point under partial shaded conditions and exhibits less efficiency when compared with advanced soft computing methods. Hybrid methods provide good efficiency and performance than traditional and advanced methods. Authors powerfully confirm that this article offers convenient information’s to enthusiastic engineers and new researchers those who are all working in solar PV systems.
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