Results 31 to 40 of about 2,263 (261)

Runge–Kutta optimization‐based selective harmonic elimination in an H‐bridge multilevel inverter

IET Power Electronics, 2023
The application of iterative techniques for solving the Selective Harmonic Elimination Pulse Width Modulation (SHE‐PWM) problem, such as the Newton–Raphson (NR) method, can tend to get stuck at local optima in the solution space.
Injila Sajid, Adil Sarwar, Mohd Tariq, Farhad Ilahi Bakhsh, Md Reyaz Hussan, Shafiq Ahmad, Adamali Shah Noor Mohamed, Akbar Ahmad   +7 more
doaj   +1 more source

Dynamic and Steady State Response Analysis of Selective Harmonic Elimination in High Power Inverters

IEEE Access, 2021
Selective harmonic elimination (SHE) technique has drawn tremendous interests for its superior harmonic performance, especially in high power devices where switching power loss and passive filter size are the main concerns. However, the drawbacks of slow
Jingling Cheng, Tingting Xu, Dongdong Chen, Guozhu Chen   +3 more
doaj   +1 more source

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

EURASIP 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, Inzamam Ul Haq, Tanvir Ahmad, Haider Ali, Affaq Qamar, Abdul Basit, Murad Khan, Javed Iqbal   +7 more
doaj   +1 more source

Reduction in Selected Torque Harmonics in a Three-Level NPC Inverter-Fed Induction Motor Drive

Energies, 2022
The reduction or elimination of selected torque and current harmonics is widely used in multilevel inverter fed induction motor drives. A wide range of methods are employed to achieve this goal.
Piotr Chudzik, Marcin Steczek, Karol Tatar   +2 more
doaj   +1 more source

Emerging insights into CC and CXC chemokines and their receptors in Mycobacterium tuberculosis infection

FEBS Open Bio, EarlyView.
The dual roles of CC and CXC chemokines in distinguishing active, latent, and subclinical tuberculosis were reviewed, along with an evaluation of their potential as diagnostic biomarkers and therapeutic targets to advance precision medicine in tuberculosis management. The graphical abstract was generated with AI assistance (Gemini 3.0).
Xuying Yin, Dangsheng Xiao, Jiezuan Yang
wiley   +1 more source

Multiple Sclerosis Relapse Activity After Ozanimod Discontinuation in DAYBREAK Trial Participants

Annals of Clinical and Translational Neurology, EarlyView.
Multiple Sclerosis Relapse Activity After Ozanimod Discontinuation in DAYBREAK Trial Participants. ABSTRACT Objective Return of disease activity is expected when patients discontinue disease‐modifying therapy (DMT) for multiple sclerosis (MS). Some MS DMTs are associated with higher‐than‐expected disease activity (rebound) after discontinuation.
Ralf Gold, Krzysztof W. Selmaj, Regina Berkovich, Jeffrey A. Cohen, Giancarlo Comi, Eva K. Havrdová, James K. Sheffield, Hetal Desai, Chun‐Yen Cheng, Jon V. Riolo, Andrew Thorpe, Erik DeBoer, Bruce A. C. Cree   +12 more
wiley   +1 more source

Selective harmonic elimination method for unequal DC sources of multilevel inverters

Automatika, 2019
This paper presented an analytical and closed-form solution for the harmonic contents that were injected in the five-level inverters from asymmetrical DC sources or batteries which were suitable for renewable energy sources.
Mahrous Ahmed, Mohamed Orabi, Sherif Ghoneim, Mosleh Alharthi, Farhan Salem, Bassem Alamri, Saad Mekhilef   +6 more
doaj   +1 more source

APPLICATION OF CURVE FITTING TECHNIQUES USING SOFT COMPUTING TECHNIQUES (GA, GSA, POS AND NR) IN MULTILEVEL INVERTERS FOR HARMONIC MINIMIZATION [PDF]

Journal of Engineering Science and Technology, 2017
With the advent of low cost and powerful computers, the soft computing (SC) approach seems to be a better approach and well suited to handle the complexity of the HEPWM problem.
VARSHA SINGH, SWAPNAJIT PATTNAIK, S. GUPTA   +2 more
doaj  

Fast and fault‐tolerant model predictive control of MMCs under selective harmonic elimination

IET Generation, Transmission & Distribution, 2023
Selective harmonic elimination (SHE) is a suitable pulse‐width modulation (PWM) technique for some applications of modular multilevel converters (MMC) with lower number of semiconductor submodules (SM).
Ardavan Mohammadhassani, Ali Mehrizi‐Sani   +1 more
doaj   +1 more source

Sertraline Treatment Can Mimic Niemann‐Pick Type C Biomarker Profile: A Diagnostic Pitfall

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Oxysterols (cholestane‐3β,5α,6β‐triol and 7‐ketocholesterol) and N‐palmitoyl‐O‐phosphocholineserine (PPCS) are sensitive biomarkers for Niemann‐Pick disease type C (NPC) screening. However, false‐positive results occur, with a biomarker profile suggestive of NPC despite the absence of pathogenic variants in genes involved in NPC or ...
Maria Makrygianni, Cecile Pagan, Antony Citterio‐Quentin, Isabelle Rouvet, Giulia Dingeo, Cyril Hanin, Claudine Laurent‐Levinson, Samia Pichard, Bénédicte Héron, Clément Gourguechon, Daniele Mandia, Jerome Guitton, Carole Lacout, Nicolas Schleinitz, Florient Potier, Olivier Flabeau, Elsa Besse‐Pinot, Foudil Lamari, Magali Pettazzoni, Yann Nadjar   +19 more
wiley   +1 more source