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  • Open Access

    ARTICLE

    Fault Recognition of Multilevel Inverter Using Artificial Neural Network Approach

    Aravind Athimoolam1,*, Karthik Balasubramanian2

    Intelligent Automation & Soft Computing, Vol.36, No.2, pp. 1331-1347, 2023, DOI:10.32604/iasc.2023.033465 - 05 January 2023

    Abstract This paper focuses on the development of a diagnostic tool for detecting insulated gate bipolar transistor power electronic switch flaws caused by both open and short circuit faults in multi-level inverter time-frequency output voltage specifications. High-resolution laboratory virtual instrument engineering workbench software testing tool with a sample rate data collection system, as well as specialized signal processing and soft computing technologies, are used in this proposed method. On a single-phase cascaded H-bridge multilevel inverter, simulation and experimental investigations of both open and short issues of the insulated gate bipolar transistor components are performed out. In More >

  • Open Access

    ARTICLE

    THD Reduction for Permanent Magnet Synchronous Motor Using Simulated Annealing

    R. Senthil Rama1, C. R. Edwin Selva Rex2, N. Herald Anantha Rufus3,*, J. Annrose4

    Intelligent Automation & Soft Computing, Vol.35, No.2, pp. 2325-2336, 2023, DOI:10.32604/iasc.2023.028930 - 19 July 2022

    Abstract Any nonlinear behavior of the system is analyzed by a useful way of Total Harmonic Distortion (THD) technique. Reduced THD achieves lower peak current, higher efficiency and longer equipment life span. Simulated annealing (SA) is applied due to the effectiveness of locating solutions that are close to ideal and to challenge large-scale combinatorial optimization for Permanent Magnet Synchronous Machine (PMSM). The parameters of direct torque controllers (DTC) for the drive are automatically adjusted by the optimization algorithm. Advantages of the PI-Fuzzy-SA algorithm are retained when used together. It also improves the rate of system convergence. More >

  • Open Access

    ARTICLE

    Harmonics Extraction Scheme for Power Quality Improvement Using Chbmli-Dstatcom Module

    R. Hemalatha1,*, M. Ramasamy2

    Intelligent Automation & Soft Computing, Vol.35, No.2, pp. 1505-1525, 2023, DOI:10.32604/iasc.2023.026301 - 19 July 2022

    Abstract In recent day’s power distribution system is distress from acute power quality issues. In this work, for compensating Power Quality (PQ) disturbances a seven level cascaded H-bridge inverter is implemented in distribution static compensator which protects power quality problems in currents. Distribution Static Compensator (DSTATCOM) aid to enhances power factor and removes total harmonic distortion which is drawn from non-linear load. The D–Q reference theory based hysteresis current controller is employed to generate reference current for compensation of harmonics and reactive power, additionally Probabilistic Neural Network (PNN) classifier is used which easily separates exact harmonics. More >

  • Open Access

    ARTICLE

    Design and Analysis of Cascaded Hybrid-Bridge Multi-Cell Multilevel Inverter with Reduced Total Harmonic Distortion Profile

    Bulbul Sharma1,*, N. Karthick1, Durgesh Prasad Bagarty2

    Energy Engineering, Vol.119, No.6, pp. 2585-2605, 2022, DOI:10.32604/ee.2022.021465 - 14 September 2022

    Abstract This multilevel inverter methodology is the center of focus among researchers in recent era. It has been focused due to its advantages over existing topologies, drawbacks and improvement of power quality, Multi-level inverter has the ability to generate nearly sinusoidal waves. This sinusoidal wave can be further improved by increasing the level of output voltage or with the help of filter design, and this manuscript presents single-phase Multi cell Multi-Level Inverter (MLI). It has been considered for reducing component count to get a higher number of output voltage levels and lower Total harmonics distortion profile.… More >

  • Open Access

    RETRACTION

    WITHDRAWN: A PageRank-Based WeChat User Impact Assessment Algorithm

    Qiong Wang1, Yuewen Luo1, Hongliang Guo1, Peng Guo2, Jinghao Wei1, Tie Lin1,*

    Journal of New Media, Vol.3, No.3, pp. 89-98, 2021, DOI:10.32604/jnm.2021.019519 - 13 July 2021

    Abstract This article has been withdrawn at the request of the editor and publisher. The Tech Science Press Policy on Article Withdrawal can be found at https://www.techscience.com/JNM/info/auth_instru. The publisher regrets that a technical error occurred, which led to the duplicate publication. We apologize to the authors and the readers for this unfortunate error and any inconvenience this may have caused. More >

  • Open Access

    RETRACTION

    [ARTICLE WITHDRAWN] Long Noncoding RNA KCNQ1OT1 Accelerates the Progression of Ovarian Cancer via MicroRNA-212-3/LCN2 Axis

    Lu, Xiaoqin1, Wang, Fuying1, Fu, Meizhou2, Li, Yuankun1, Wang, Lijun1

    Oncology Research, Vol.28, No.2, pp. 135-146, 2020, DOI:10.3727/096504019X15719983040135

    Abstract This article was wihdrawn by the authors with the following Withdrawal Statement - The integrity of the current study is not acceptable. The authors intend to enrich the study to make it more valuable. Thus, the authors want to withdraw the current study. Please accept our apologies for this inconvenience and we hope for your understanding. Yours sincerely (on behalf of the authors), Xiaoqin Lu. More >

  • Open Access

    RETRACTION

    [ARTICLE WITHDRAWN] Long Noncoding RNA TUNAR Represses Growth, Migration, and Invasion of Human Glioma Cells Through Regulating miR-200a and Rac1

    Dai Jinhua1, Ma Jianbo1, Yu Bixia2, Zhu Zhankun1, Hu Yanqin2

    Oncology Research, Vol.27, No.1, pp. 107-115, 2019, DOI:10.3727/096504018X15205622257163

    Abstract THIS ARTICLE WAS WITHDRAWN BY THE PUBLISHERS IN OCTOBER 2020. More >

  • Open Access

    RETRACTION

    [ARTICLE WITHDRAWN] miR-630 Inhibits Epithelial-to-Mesenchymal Transition (EMT) by Regulating the Wnt/β-Catenin Pathway in Gastric Cancer Cells

    Li Dong1, Tian Bo2, Jin Xiaosheng3

    Oncology Research, Vol.27, No.1, pp. 9-17, 2019, DOI:10.3727/096504018X15178732625479

    Abstract THIS ARTICLE WAS WITHDRAWN BY THE PUBLISHERS IN OCTOBER 2020. More >

  • Open Access

    RETRACTION

    [ARTICLE WITHDRAWN] Long Noncoding RNA LINC01296 Harbors miR-21a to Regulate Colon Carcinoma Proliferation and Invasion

    Wang, Kecheng1, Zhang, Meng2, Wang, Cong2, Ning, Xiaofei1

    Oncology Research, Vol.27, No.5, pp. 541-549, 2019, DOI:10.3727/096504018X15234931503876

    Abstract THIS ARTICLE WAS WITHDRAWN BY THE PUBLISHERS IN OCTOBER 2020. More >

  • Open Access

    ABSTRACT

    From Cell Mechanobiology to Mechanomedicine: A Research Path Inspired by Fung - Dedicated to Prof. YC Fung on the Occasion of His Centennial Birthday

    Ning Wang1,*

    Molecular & Cellular Biomechanics, Vol.16, Suppl.2, pp. 21-21, 2019, DOI:10.32604/mcb.2019.07550

    Abstract Decades ago YC Fung proposed that mechanical stress could have substantial impacts on remodeling and growth of living tissues. Fung also proposed the concept of residual stress in blood vessels and quantified residual stress in excised arteries [1]. However, how stress influences cell and tissue functions remains elusive. At the cellular level, we have quantified myosin II mediated pre-existing tensile stress (prestress) in living cells and demonstrated that the prestress (the endogenous cytoskeletal tension) regulates cell stiffness, gene expression, and long-distance stress propagation in the cytoplasm to activate enzymes [2]. The prestress even impacts on… More >

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