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Novel power capture optimization based sensorless maximum power point tracking strategy and internalmodel controller for wind turbines systems driven SCIG

Ali EL YAAKOUBI,Kamal ATTARI,Adel ASSELMAN,Abdelouahed DJEBLI

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 742-756 doi: 10.1007/s11708-017-0462-x

Abstract: algorithm based on fuzzy logic, and the control strategy of the generator is implemented by means of an internalmodel (IM) controller.integral (PI) controller, to implement the proposed optimization strategy.The MPPT in conjunction with the IM controller is proposed as an alternative to the traditional tip speedBased on the simulation results of a six KW-WECS model in Matlab/Simulink, the presented control system

Keywords： power optimization     wind energy conversion system     maximum power point tracking (MPPT)     fuzzy logic     internalmodel (IM) controller    

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Unified cycle model of a class of internal combustion engines and their optimum performance characteristics

Shiyan ZHENG

Frontiers in Energy 2011, Volume 5, Issue 4,   Pages 367-375 doi: 10.1007/s11708-011-0170-x

Abstract: The unified cycle model of a class of internal combustion engines is presented, in which the influenceThe results obtained from this unified cycle model are very general and useful, from which the optimal

Keywords： internal combustion engine     irreversibility     power output     efficiency     optimization    

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A time−space porosity computational model for concrete under sulfate attack

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0985-7

Abstract: This study proposes a mechanical–chemical model to simulate the spatiotemporal distribution of the porosityIn addition, the expansion strain at the macro-scale is obtained using a stress analysis model of compositeThe results demonstrate that the expansion strains calculated using the suggested model agree well withThe proposed model can forecast and assess the porosity of concrete covers and provide a credible approach

Keywords： expansion deformation     porosity     internal expansion stress     external sulfate attack     mechanical–chemicalcoupling model    

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Diffusion process in enzyme–metal hybrid catalysts

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 921-929 doi: 10.1007/s11705-022-2144-4

Abstract: reference to experimental data in previous studies, the Weisz–Prater parameter and efficiency factor of internaldiffusion were calculated to evaluate the internal diffusion limitations in these catalysts.Thereafter, a kinetic model was developed and fitted to describe the proximity effect in hybrid catalystsResults indicated that the enhanced catalytic efficiency of hybrid catalysts may arise from the decreased internal

Keywords： enzyme–metal hybrid catalyst     internal diffusion     proximity effect     kinetic model    

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A study of spray granulation in vibrated fluidized bed with internal heating tubes

Xiaoheng PAN, Shichao YE, Zeguang ZHANG, Li ZHANG, Xuejun ZHU

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 78-82 doi: 10.1007/s11705-009-0084-x

Abstract: The granulation process in a vibrated fluidized bed with immersed horizontal heating tubes was studied in this paper, with small monoammonium phosphate particles as the initial particles and monoammonium phosphate solution sprayed on them. The concrete influences on the granulating performance of the immersed horizontal heating power, fluidizing gas velocity, vibration frequency and amplitude had been analyzed theoretically. The results show that appropriate vibration intensity is a preferred condition for the growth of partials, but the fine dust will become much more along with prolonged vibration. Increasing the heating power is beneficial to raise the growth rate. Particles will grow faster if the fluidizing gas velocity is higher, but this will cause more fine dust. The optimized condition of =0.002 m, =6.67 Hz, =1.4 m/s was given after the analysis of the experimental results. In the end, a semiempirical formula was derived from the experiment data, and the calculation results show good agreement with the experimental data.

Keywords： vibrated fluidized bed     immersed horizontal     horizontal heating tubes     spray granulation     particle growth model    

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Cylindrical particulate internal flows: A review

Lizhong HUANG, Xiang GAO, Jianzhong LIN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4,   Pages 385-393 doi: 10.1007/s11465-012-0354-z

Abstract:

The study of cylindrical particulate internal flows has wide industrial applicability hence receivedThis article reviews the cylindrical particulate internal flows over the past twenty years.

Keywords： cylindrical particulate flow     internal flow    

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Current progress on internal medicine in China—2006 Part I

YAO Dingkang, ZHU Liang, ZHAO Xue, MEI Changlin

Frontiers of Medicine 2007, Volume 1, Issue 3,   Pages 235-247 doi: 10.1007/s11684-007-0046-y

Abstract: The growing interest has been placed in the current state of Chinaºs internal medicine from all overMany data of internal medicine in China were collected by searching through some of the most prominentBecause there are many researches on the field of internal medicine, just some representative reports

Keywords： internal medicine     Chinaºs internal     respiration     gastroenterology     cardiology    

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An Empirical Study on the Internal Control Efficiency of Listed Engineering Companies

Zhi-wen Wang,Jing Tong

Frontiers of Engineering Management 2015, Volume 2, Issue 2,   Pages 159-164 doi: 10.15302/J-FEM-2015026

Abstract: The authors carried out an empirical study on the internal control efficiency of publically listed engineeringrelationship of independent director ratios, audit committee quality and auditor independence with the internalpublically listed engineering companies and forward suggestions and recommendations on raising the internal

Keywords： internal control efficiency     board of directors     independent directors     audit committee    

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rotor flux MRAS to overcome low speed problems for rotor resistance estimation in vector controlled IM

Venkadesan ARUNACHALAM,Himavathi SRINIVASAN,A. MUTHURAMALINGAM

Frontiers in Energy 2016, Volume 10, Issue 4,   Pages 382-392 doi: 10.1007/s11708-016-0421-y

Abstract: This paper presents a new neural network based model reference adaptive system (MRAS) to solve low speedproblems for estimating rotor resistance in vector control of induction motor (IM).In this scheme, the reference model used is the flux estimator using voltage model equations.of the voltage model to form a new scheme named as “NN-FLUX-MRAS.”trained NN as the adaptive model.
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Embankment dam foundation analysis for the decrease of internal erosion likelihood

Marc SMITH

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 4,   Pages 431-436 doi: 10.1007/s11709-012-0183-5

Abstract: , pore pressures in sand are higher and thus where the factor of safety against uplift is lower and internalA laser airborne survey was performed to model the land surface elevation.This data was combined in a geostatistical model along with the measured piezometric levels in the foundation

Keywords： seepage detection     geostatistical analysis     dam monitoring     internal erosion     LIDAR survey    

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Advances in polishing of internal structures on parts made by laser-based powder bed fusion

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0724-0

Abstract: The internal structures of metallic products are important in realizing functional applications.In this article, process, basic forms, and applications relevant to L-PBF internal structures are reviewed

Keywords： laser-based powder bed fusion     polishing     internal structures     surface quality     surface features     post    

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investigation of the chemical and electrochemical characteristics of planar solid oxide fuel cell with direct internal

Yuzhang WANG, Shilie WENG, Yiwu WENG

Frontiers in Energy 2011, Volume 5, Issue 2,   Pages 195-206 doi: 10.1007/s11708-011-0148-8

Abstract: A fully three-dimensional mathematical model of a planar solid oxide fuel cell (SOFC) with complete directinternal steam reforming was constructed to investigate the chemical and electrochemical characteristics

Keywords： planar solid oxide fuel cell (SOFC)     direct internal reforming     chemical reaction     methane     electrochemical    

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Full scale model test of segmental precast concrete box girder with external and internal tendons

Zheng Kaiqi,Bu Hongqi,Liu Zhao,Hui Zhuo,Lv Zhitao

Strategic Study of CAE 2013, Volume 15, Issue 8,   Pages 89-94

Abstract: box girder the regular service stage and the construction state, a span of 48 m full scale box girder modelThe model test results show that at the regular service stage, the residual deformation of the girder

Keywords： segmental precast     model test     external prestress     full scale test    

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enhancement and acute biotoxicity removal through the treatment of pharmaceutical wastewater using a combined internal

Liang SUN, Can WANG, Min JI, Fen WANG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 481-487 doi: 10.1007/s11783-011-0341-3

Abstract: Actual pharmaceutical wastewater was treated using a combined ultrasonic irradiation (US) and iron/coke internalultrasonic irradiation dramatically enhanced the chemical oxygen demand (COD) removal efficiencies by internal

Keywords： internal electrolysis     ultrasonic     pharmaceutical wastewater     biodegradability     acute biotoxicity    

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Influence of temperature on cam-tappet lubrication in an internal combustion engine

CHANG Qiuying, YANG Peiran, WANG Jing, CHEN Quanshi

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 489-492 doi: 10.1007/s11465-007-0085-8

Abstract: elastohydrodynamic (EHL) simulation were performed on the exhausting cam-tappet friction pair of an internal

Keywords： coefficient     combustion     isothermal elastohydrodynamic     temperature     thickness    

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Title Author Date Type Operation

Novel power capture optimization based sensorless maximum power point tracking strategy and internalmodel controller for wind turbines systems driven SCIG

Ali EL YAAKOUBI,Kamal ATTARI,Adel ASSELMAN,Abdelouahed DJEBLI

Journal Article

Unified cycle model of a class of internal combustion engines and their optimum performance characteristics

Shiyan ZHENG

Journal Article

A time−space porosity computational model for concrete under sulfate attack

Journal Article

Diffusion process in enzyme–metal hybrid catalysts

Journal Article

A study of spray granulation in vibrated fluidized bed with internal heating tubes

Xiaoheng PAN, Shichao YE, Zeguang ZHANG, Li ZHANG, Xuejun ZHU

Journal Article

Cylindrical particulate internal flows: A review

Lizhong HUANG, Xiang GAO, Jianzhong LIN

Journal Article

Current progress on internal medicine in China—2006 Part I

YAO Dingkang, ZHU Liang, ZHAO Xue, MEI Changlin

Journal Article

An Empirical Study on the Internal Control Efficiency of Listed Engineering Companies

Zhi-wen Wang,Jing Tong

Journal Article

rotor flux MRAS to overcome low speed problems for rotor resistance estimation in vector controlled IM

Venkadesan ARUNACHALAM,Himavathi SRINIVASAN,A. MUTHURAMALINGAM

Journal Article

Embankment dam foundation analysis for the decrease of internal erosion likelihood

Marc SMITH

Journal Article

Advances in polishing of internal structures on parts made by laser-based powder bed fusion

Journal Article

investigation of the chemical and electrochemical characteristics of planar solid oxide fuel cell with direct internal

Yuzhang WANG, Shilie WENG, Yiwu WENG

Journal Article

Full scale model test of segmental precast concrete box girder with external and internal tendons

Zheng Kaiqi,Bu Hongqi,Liu Zhao,Hui Zhuo,Lv Zhitao

Journal Article

enhancement and acute biotoxicity removal through the treatment of pharmaceutical wastewater using a combined internal

Liang SUN, Can WANG, Min JI, Fen WANG

Journal Article

Influence of temperature on cam-tappet lubrication in an internal combustion engine

CHANG Qiuying, YANG Peiran, WANG Jing, CHEN Quanshi

Journal Article