A New 23 Level Cascaded Multi-Level Inverter with Optimum Structure

Sunitha, T.; Udhayakumar, K.; Annamalai, T.; Gopinath, C.

doi:10.1109/icees.2018.8443220

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…The proposed MLI was compared with conventional MLIs and found to be better in terms of THD levels, however, efficiency is not calculated at different types of loads. The authors in [26] presented the 23-level multi-level inverter with a new control technique named the sinusoidal tracking technique. Analysis was done only for resistive load with different switching angles to produce optimum angles with minimized THD content.…”

Section: Introductionmentioning

confidence: 99%

An Improved Artificial Neural Network-Based Approach for Total Harmonic Distortion Reduction in Cascaded H-Bridge Multilevel Inverters

Ghadi,

Iqbal,

Adnan

et al. 2023

IEEE Access

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The concept of smart grids has enabled the addition of renewable energy resources in the utility grids. This integration is possible after energy conversion and energy conversion causes the degradation in the quality of electric power. The power quality can be enhanced by reducing the total harmonic distortion (THD) in energy conversion. In this paper, we have presented an improved artificial neural network (ANN) based approach that can be useful to reduce the THD levels in a cascaded H-bridge (CHB) multilevel inverter (MLI). The proposed ANN architecture consists of only one hidden layer with ten neurons and can generate accurate results in both overfitting and underfitting conditions. Due to a smaller number of neurons, the proposed architecture is less complex and can produce results relatively faster as compared to other ANN architectures available in the literature. The proposed ANN architecture is tested on an asymmetrical CHB MLI, and the results are compared with the recent state-of-the-art (SOTA) techniques. The CHB MLI under test had three DC voltage sources with 1:2:4 and inductive loads. The simulations are performed in MATLAB and Simulink environment and the switching angles are optimized by using the ANN architecture. The results have shown a 71.95% improvement in current THDs and a 13.91% improvement in voltage THDs as compared to the SOTA technique. The proposed configuration is 89.6% efficient on inductive load and uses a smaller number of switches. Finally, an experimental setup is created, and the simulation results are validated through various experiments.INDEX TERMS Artificial Neural Networks, Cascaded H-bridge, multi-level inverter, Solar PV system, Switching angles, Total harmonic distortion (THD).

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Section: Introductionmentioning

confidence: 99%

An Improved Artificial Neural Network-Based Approach for Total Harmonic Distortion Reduction in Cascaded H-Bridge Multilevel Inverters

Ghadi,

Iqbal,

Adnan

et al. 2023

IEEE Access

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“…However, cascaded multilevel inverters (CMLI) are more suitable for photovoltaic applications because each PV array is a separate DC source [5]. A cascaded MLI arrangement is used for most studies [23][24][25][26][27][28][29][30][31][32][33][34][35]. Maximum power point tracker (MPPT) techniques with a DC/DC converter [36,37] are used to obtain high power and improve the efficiency of the PV system.…”

Section: Introductionmentioning

confidence: 99%

“…PWM control algorithms used with MLIs significantly impact their efficiency, power ratings, and applications [15]. Over the past few decades, several studies have proposed various MLI topologies with a reduced number of switches [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65].…”

Section: Introductionmentioning

confidence: 99%

New Nine-Level Cascade Multilevel Inverter with a Minimum Number of Switches for PV Systems

Al-Samawi

Trabelsi

2022

Energies

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To support the grid system with high power quality from photovoltaics (PVs) and reduce the partial shading condition (PSC) effect of the PV system, as well as the mismatch power issue, in this study, we present a simple single-phase, nine-level cascade inverter architecture for photovoltaic (PV) systems with a minimum number of power components and passive parts. This reduction in the number of switches decreases the switching losses and the number of driving circuits, which causes a reduction in the complexity of the control circuit and hence reduces the cost and size. The suggested inverter shows a lower output voltage total harmonic distortion (THD) and unity power factor. In addition, this inverter’s control and switching techniques are far simpler than those of recently published designs. To evaluate the performance of the proposed inverter, we performed a comparison of the cascaded multilevel inverter (CMLI) topology, which required recent cascade topologies with the same nine voltage levels. The comparison depends on parameters such as the number of components (diode and capacitors) and the number of active switches in the inverter, in addition to total harmonic distortion. MATLAB/Simulink models for a grid-tied solar system PV application driven by the proposed nine-level inverter were built for design and validation.

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A New Asymmetric 23-Level Inverter Topology with Nearest Level and Unipolar Phase Disposition Control Techniques

Sakile¹,

Bhanuchandar²,

Rivera³

et al. 2022

Lecture Notes in Electrical Engineering

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A New 23 Level Cascaded Multi-Level Inverter with Optimum Structure

Cited by 5 publications

References 11 publications

An Improved Artificial Neural Network-Based Approach for Total Harmonic Distortion Reduction in Cascaded H-Bridge Multilevel Inverters

An Improved Artificial Neural Network-Based Approach for Total Harmonic Distortion Reduction in Cascaded H-Bridge Multilevel Inverters

New Nine-Level Cascade Multilevel Inverter with a Minimum Number of Switches for PV Systems

A New Asymmetric 23-Level Inverter Topology with Nearest Level and Unipolar Phase Disposition Control Techniques

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