General Mathematical Solution for Selective Harmonic Elimination

Ahmed, Mahrous; Orabi, Mohamed; Ghoneim, Sherif S. M.; Alharthi, Mosleh M.; Salem, Farhan A.; Alamri, Basem; Mekhilef, Saad

doi:10.1109/jestpe.2019.2932933

Cited by 40 publications

(26 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…the maximum value of the allowed THD is 5%. On the other hand, the relationship between the inverter power and THD must be considered for full optimization [74] because the THD usually increases when the inverter operates in light load [75].…”

Section: Total Harmonic Distortionmentioning

confidence: 99%

Classification of Three-Phase Grid-Tied Microinverters in Photovoltaic Applications

et al. 2020

Self Cite

View full text Add to dashboard Cite

Microinverters are an essential part of the photovoltaic (PV) industry with significant exponential prevalence in new PV module architectures. However, electrolyte capacitors used to decouple double line frequency make the single-phase microinverters topologies the slightest unit in this promising industry. Three-phase microinverter topologies are the new trend in this industry because they do not have double-line frequency problems and they do not need the use of electrolyte capacitors. Moreover, these topologies can provide additional features such as four-wire operation. This paper presents a detailed discussion of the strong points of three-phase microinverters compared to single-phase counterparts. The developed topologies of three-phase microinverters are presented and evaluated based on a new classification based on the simplest topologies among dozens of existing inverters. Moreover, the paper considers the required standardized features of PV, grid, and the microinverter topology. These features have been classified as mandatory and essential. Examples of the considered features for classifications are Distributed Maximum Power Point Tracking (DMPPT), voltage boosting gain, and four-wire operation. The developed classification is used to identify the merits and demerits of the classified inverter topologies. Finally, a recommendation is given based on the classified features, chosen inverter topologies, and associated features.

show abstract

Section: Total Harmonic Distortionmentioning

confidence: 99%

Classification of Three-Phase Grid-Tied Microinverters in Photovoltaic Applications

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…In order to control the MLIs, different strategies such as selective harmonic elimination, 17 hybrid modulation, 18 types of pulse width modulation like space vector modulation (SVM), 19 phase disposition (PD), phase opposite disposition (POD), and alternative phase opposite disposition (APOD) 20 have been proposed in the literature. Nearest level control (NLC) is a low switching frequency method and therefore offers lower switching losses in compare with typical switching methods.…”

Section: Switching Strategy For Proposed Topologymentioning

confidence: 99%

“…In order to control the MLIs, different strategies such as selective harmonic elimination, hybrid modulation, types of pulse width modulation like space vector modulation (SVM), phase disposition (PD), phase opposite disposition (POD), and alternative phase opposite disposition (APOD) have been proposed in the literature.…”

Section: Switching Strategy For Proposed Topologymentioning

confidence: 99%

New generalized topologies of asymmetric modular multilevel inverter based on six‐switch H‐bridge

Ghodsi

Barakati

2020

Circuit Theory & Apps

View full text Add to dashboard Cite

In this paper, for high and low numbers of voltage levels, two new generalized multilevel converters are introduced, which comprise a six-switch H-bridge and several switched-source units. Switched-source units consist of bidirectional and unidirectional switches along with a dc voltage source. The two proposed topologies are compared with topologies based on the six-switch Hbridge, conventional H-bridge, and some new topologies regarding the number of switches, dc voltage sources, gate drivers, and per-unit voltage block on switches. The comparison results reveal the superiority of the proposed topology with low number of voltage level (LNL) and proposed topology with high number of voltage level (HNL) regarding the per-unit voltage block and number of elements, respectively. Thus, the proposed topologies lead to reduction cost and weight of system. Furthermore, for high number of levels, HNL topology is more appropriate than LNL topology and vice versa. The performances of the proposed 15-level LNL and 61-level topologies are simulated by MATLAB, and proposed 15-level LNL topology in producing all voltage levels is validated by experimental results. K E Y W O R D S asymmetric topology, grid connected, H-bridge, multilevel inverter, prototype

show abstract

“…This method is based on trigonometric formulations, where by fixing the harmonic and the modulation index, it comeback all probable exact results of couple of control angles. In [31], a general mathematical solution for SHE techniques has been proposed. This method eliminates a number of harmonics regardless the output voltage levels by definition a linear system of equations.…”

Section: Introductionmentioning

confidence: 99%

Innovative Computational Approach to Harmonic Mitigation for Seven-level Cascaded H-Bridge Inverters

Schettino

Çolak

Tommaso

et al. 2020

2020 Fifteenth International Conference on Ecological Vehicles and Renewable Energies (EVER)

View full text Add to dashboard Cite

Low frequency modulation strategies are a good solution to increase the energy conversion efficiency in high power applications. The paper is devoted to presents an innovative way to low order harmonics mitigation for seven-level Cascaded H-Bridge Inverters. In particular, this approach is based on the mitigation of selected harmonics without solve non-linear equations for an extended range of the fundamental amplitude. In fact, in real-time operation to evaluate the control angles the polynomial equations have been identified. Through circuit simulation analysis in MatLab/PLECS environment, the effectiveness of the harmonic mitigation method has been tested and compared with theoretical results.

show abstract

General Mathematical Solution for Selective Harmonic Elimination

Cited by 40 publications

References 31 publications

Classification of Three-Phase Grid-Tied Microinverters in Photovoltaic Applications

Classification of Three-Phase Grid-Tied Microinverters in Photovoltaic Applications

New generalized topologies of asymmetric modular multilevel inverter based on six‐switch H‐bridge

Innovative Computational Approach to Harmonic Mitigation for Seven-level Cascaded H-Bridge Inverters

Contact Info

Product

Resources

About