Results 71 to 80 of about 9,565 (257)

Multilevel Converters: An Enabling Technology for High-Power Applications [PDF]

open access: yes, 2009
| Multilevel converters are considered today as the state-of-the-art power-conversion systems for high-power and power-quality demanding applications.
García Franquelo, Leopoldo   +6 more
core  

Single-carrier phase-disposition PWM techniques for multiple interleaved voltage-source converter legs [PDF]

open access: yes, 2017
Interleaved converter legs are typically modulated with individual carriers per leg and phase-shifted PWM (PS-PWM) as it facilitates current balancing amongst the legs.
Capellá Frau, Gabriel José   +3 more
core   +2 more sources

Phase Change Material‐Driven Tunable Metasurface for Adaptive Terahertz Sensing and Communication in 6G Perceptive Networks

open access: yesAdvanced Functional Materials, EarlyView.
This study explores the benefits of metasurfaces made from functional materials, highlighting their ability to be adapted and improved for various high‐frequency applications, including communications and sensing. It first demonstrates the potential of these functional material‐based metasurfaces to advance the field of sub‐THz perceptive networks ...
Yat‐Sing To   +5 more
wiley   +1 more source

A Comprehensive Review on Selective Harmonic Elimination Techniques and Its Permissible Standards in Electrical Systems

open access: yesIEEE Access
Selective harmonic elimination techniques have developed a crucial feature in the domain of power electronics and in innumerable drives control schemes.
N. Subramanian, Albert Alexander Stonier
doaj   +1 more source

Generalized formulation of multilevel selective harmonic elimination PWM: Case I-Non-Equal DC Sources [PDF]

open access: yes, 2006
The paper presents optimal solutions for eliminating harmonics from the output waveform of a multilevel staircase pulse-width modulation (PWM) method with non-equal dc sources.
Agelidis, V.G., Dahidah, M.S.A.
core   +1 more source

Model Predictive Switching Pattern Control for Current-Source Converters with Space-Vector-Based Selective Harmonic Elimination [PDF]

open access: yes, 2017
© 2017 IEEE. This paper presents a model predictive switching pattern control (MPSPC) for a current-source converter (CSC), which achieves superb low-order harmonics elimination performance in steady state and improved transient responses.
Acuna, P   +4 more
core   +1 more source

Golden‐Ratio–Guided Aperiodic Architected Metamaterials with Simultaneously Enhanced Strength and Toughness

open access: yesAdvanced Functional Materials, EarlyView.
Guided by the golden ratio, a class of aperiodic architected metamaterials is introduced to address the intrinsic trade‐off between strength and toughness. By unifying local geometric heterogeneity with global order, the golden‐ratio‐guided aperiodic architecture promotes spatial delocalization of damage tolerence regions, leading to more tortuous ...
Junjie Deng   +9 more
wiley   +1 more source

The selective harmonic elimination based optimal fundamental frequency modulation for multilevel converter

open access: yes矿业科学学报, 2017
The selective harmonic elimination(SHE) based staircase modulation is a commonly used fundamental frequency modulation strategy for multilevel converters.However, the solutions to the staircase SHE equations cannot cover the full range of modulation ...
Yang Kehu   +3 more
doaj  

Harmonizing the Pyrene and Ether Groups in Covalent Triazine Polymers for Highly Effective H2O2 Photosynthesis via One‐Step Two‐Electron Oxygen Reduction

open access: yesAdvanced Functional Materials, EarlyView.
The pyrene and ether groups are incorporated into the covalent triazine polymer (CTP) structure. The synergistic effect of the two functional groups endows CTP with better electron transfer, light absorption, and oxygen activation properties. An impressive apparent quantum yield (13.2% @420 nm) and a remarkable solar‐to‐chemical conversion efficiency ...
Chong Wang   +10 more
wiley   +1 more source

Minimization of total harmonic distortions of cascaded H-bridge multilevel inverter by utilizing bio inspired AI algorithm

open access: yesEURASIP Journal on Wireless Communications and Networking, 2020
Minimizing total harmonic distortion (THD) with less system complexity and computation time is a stringent constraint for many power systems. The multilevel inverter can have low THD when switching angles are selected at the fundamental frequency.
Muhammad Salman   +7 more
doaj   +1 more source

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