A Symbiotic Organism Search-Based Selective Harmonic Elimination in a Switched Capacitor Multilevel Inverter

Kumari, Manita; Sarwar, Adil; Tariq, Mohd; Ahmad, Shafiq; Mohamed, Adamali Shah Noor; Rodrigues, Eduardo M. G.

doi:10.3390/en15010089

Cited by 4 publications

(3 citation statements)

References 28 publications

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“…The proposed circuit genera voltage levels (0, 0.5 Vdc, Vdc, 1.5 Vdc, and 2 Vdc). Figure 14 depicts a nine-level switching capacitor MLI in single-phase mode proposed in [63]. The suggested topology involved boosted voltage and self-balanced capacitor voltage to control the switch states and generate various voltage levels [64].…”

Section: Other Topologiesmentioning

confidence: 99%

“…Figure 14 depicts a nine-level switching capacitor MLI in single-p posed in [63]. The suggested topology involved boosted voltage and s pacitor voltage to control the switch states and generate various voltage l capacitors (C1, C2, and C3), ten switches (S1 to S10), and a single input make up each phase.…”

Section: Other Topologiesmentioning

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%

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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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Section: Other Topologiesmentioning

confidence: 99%

Section: Other Topologiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Al-Samawi

Trabelsi

2022

Energies

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Selective harmonic elimination in PUC‐5 multilevel inverter using hybrid IGWO‐DE algorithm

Sifat,

Hussain,

Khan

et al. 2024

Engineering Reports

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The use of a multilevel inverter has received significant attention in recent years due to its numerous advantages. Because of the widespread use of multilevel inverters in industries and applications that require a wide range of voltages, achieving high‐quality voltage has presented a number of challenges. Many studies have been carried out to address the problem of unwanted harmonics in multilevel inverters. The inverter switching can be done at a low frequency using the Selective Harmonic Elimination (SHE) technique, and the unwanted harmonics can be significantly reduced; however, the issue with SHE is solving the transcendental equations and determining the optimum switching angle. To address this problem, a new and improved hybrid algorithm is proposed that combines two evolutionary algorithms, gray wolf optimization (GWO) with an improved and new convergence factor and Differential evolution (DE) with a dynamic scaling factor using a crossover operator. In this paper, the optimum switching angles for a packed U cell 5‐level inverter are estimated using the proposed algorithm for distinct modulation index values, and simulation results are compared with different algorithms. The simulation result of the proposed algorithm, IGWO‐DE is confirmed through experiment.

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Quasi-modified-Newton method-based selective harmonic elimination in cascaded H bridge inverters

Saif,

Masood,

Sarwar

et al. 2024

Sci Rep

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Multilevel converters have gained significant popularity in medium-voltage and high-power applications due to their numerous advantages over traditional two-level converters. These advantages include reduced harmonic distortion, improved efficiency, and lower stress on power semiconductors. Selective harmonic elimination (SHE) is a modulation method that can be employed with multilevel converters to achieve high-quality output voltage waveforms. In this work, an extension of Broyden’s method, known as the Quasi-Modified Newton Method, is implemented for selective harmonic elimination and accurate calculation of switching angles for a wide range of modulation indices. The proposed method is applied to cascaded H bridge inverters operating at levels 5, 7, and 9. The method offers simplicity, reduced computational burden, and faster convergence, making it easily implementable, reducing total harmonic distortion (THD), and reducing RMSE and MAD errors. The paper includes simulation and experimental results that validate the accuracy and effectiveness of the proposed approach.

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A Symbiotic Organism Search-Based Selective Harmonic Elimination in a Switched Capacitor Multilevel Inverter

Cited by 4 publications

References 28 publications

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

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

Selective harmonic elimination in PUC‐5 multilevel inverter using hybrid IGWO‐DE algorithm

Quasi-modified-Newton method-based selective harmonic elimination in cascaded H bridge inverters

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