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Unified power quality conditioner based on a three-level NPC inverter using fuzzy control techniques

Salim CHENNAI,M-T BENCHOUIA

Frontiers in Energy 2014, Volume 8, Issue 2,   Pages 221-239 doi: 10.1007/s11708-014-0317-7

Abstract: presents a novel and efficient control scheme for unified power quality conditioner (UPQC) based on three-levelneutral point clamped (NPC) inverter using fuzzy logic techniques.The simulation results illustrate the performance of the proposed UPQC at the common connection point

Keywords: three-level neutral point clamped (NPC) inverter     unified power quality conditioner (UPQC)     current harmonics    

Fault-tolerant control of an open-winding brushless doubly-fed wind power generator system with dual three-level

Shi JIN, Long SHI, Sul ADEMI, Yue ZHANG, Fengge ZHANG

Frontiers in Energy 2023, Volume 17, Issue 1,   Pages 149-164 doi: 10.1007/s11708-020-0711-2

Abstract: Consequently, the two ends of the control winding are connected via dual three-phase converters for theopen-winding brushless doubly-fed reluctance generator (BDFRG) system to operate normally in one, two, or three

Keywords: brushless doubly-fed reluctance generator (BDFRG)     direct power control     fault-tolerant control     multi-level    

A Novel PWM Method of Diode-clamped Multilevel Inverter at Low Modulation Indices

Xin Xiang,Zhang Qingfan,Hu Shunquan,Li Ruilai

Strategic Study of CAE 2007, Volume 9, Issue 10,   Pages 91-96

Abstract:

Diode-clamped multilevel inverter is a kind of power converter which The paper presents a novel carrier-based PWM method to take advantage of all levels in the invertersimulation results indicate that the novel PWM strategy increases device utilization and enables the inverter

Keywords: diode-clamped inverter     carrier-based PWM     low modulation index     redundant state    

Fundamental frequency and testing mode of complicated elastic clamped-plate vibration

QI Hongyuan, GUAN Yiduo

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 360-364 doi: 10.1007/s11465-008-0084-4

Abstract: Aimed at the modal analysis of complicated elastic clamped-plates, a trigonometric interpolation methoddetermined by analyzing the fundamental frequency; meanwhile, according to hamming testing method of multi-pointexcitation to the single-point response, and by signal processing technology and its software programming, modal parameter recognition of the elastic clamped-plate is completed.

Keywords: multi-point excitation     rectangle-plate     single-point     processing technology     trigonometric interpolation    

Three-dimensional fluorescence spectral characterization of soil dissolved organic matters in the fluctuatingwater-level zone of Kai County, Three Gorges Reservoir

Fang FANG, Yan YANG, Jinsong GUO, Hong ZHOU, Chuan FU, Zhe LI

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 426-434 doi: 10.1007/s11783-010-0264-4

Abstract: Three-dimensional fluorescence spectroscopy was used to investigate the fluorescent properties of soildissolved organic matter (DOM) in the water-level-fluctuation zone (WLFZ) of Kai County, Three GorgesB, the fluorescence intensities of peaks C and D were strongly influenced by the fluctuating water level

Keywords: water-level-fluctuation zone (WLFZ)     soil     dissolved organic matter (DOM)     three-dimensional fluorescence    

A three-dimensional two-level gradient smoothing meshfree method for rainfall induced landslide simulations

Dongdong WANG, Jiarui WANG, Junchao WU, Junjun DENG, Ming SUN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 337-352 doi: 10.1007/s11709-018-0467-5

Abstract: A three-dimensional two-level gradient smoothing meshfree method is presented for rainfall induced landslideThe two-level gradient smoothing for meshfree shape function is elaborated in the three-dimensional LagrangianSubsequently, the two-level smoothed gradient of meshfree shape function is employed to discretize therainfall seepage and soil motion equations in a nodal integration format, as provides an efficient three-dimensionalThe effectiveness of the present three-dimensional two-level gradient smoothing meshfree method is demonstrated

Keywords: meshfree method     landslide     rainfall     three-dimensional two-level gradient smoothing     nodal integration    

Performance investigation of artificial intelligence based controller for three phase four leg shunt

J. JAYACHANDRAN,R. MURALI SACHITHANANDAM

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 446-460 doi: 10.1007/s11708-015-0378-2

Abstract: In this paper, the choice of power quality compensator is a DSTATCOM which constitutes a three phasesource current from the supply mains that are nearly in phase with the supply voltage, compensates neutral

Keywords: neural network     DSTATCOM     neutral current mitigation     total harmonic distortion (THD)     three phase four wire    

Effects of Three-Dimensional Platform Stiffness and Layer Dimensions on Separation of Carcinoma Cells Article

W.G. Zhang, Z.Y. Liu, S.W. Pang

Engineering 2021, Volume 7, Issue 10,   Pages 1426-1435 doi: 10.1016/j.eng.2020.09.010

Abstract: In this work, three-dimensional (3D) biomimetic scaffold platforms were developed to separate nasopharyngealcarcinoma 43 (NPC43) cells from immortalized nasopharyngeal epithelial 460 (NP460) cells based on preciselyThe migration characteristics of NPC43 and NP460 cells on the scaffold platforms revealed that NPC43NPC43 cells had filopodia-like protrusions, while NP460 cells exhibited a sheet-like morphology.Using these 3D biomimetic platforms, 89% separation efficiency of NPC43 cells from NP460 cells was achieved

Keywords: Cell separation     Cell migration     Nasopharyngeal carcinoma (NPC)     3D scaffold platform    

Isogeometric analysis based on geometric reconstruction models

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 782-797 doi: 10.1007/s11465-021-0648-0

Abstract: computer-aided design (CAD) and the tensor-product non-uniform rational B-spline structure make the analysis of three-dimensionalThe CAD model is represented by boundary polygons or point cloud and is embedded into a regular backgroundgrid, and a model reconstruction method is proposed to obtain the level set function of the approximateThree 3D examples are used to test the proposed method, and the results demonstrate that the proposedmethod can deal with complex engineering parts reconstructed by boundary polygons or point clouds.

Keywords: isogeometric analysis     reconstruction model     level set function     trimmed element     point cloud    

Implementation of photovoltaic water pumping system with MPPT controls

Najet REBEI,Ali HMIDET,Rabiaa GAMMOUDI,Othman HASNAOUI

Frontiers in Energy 2015, Volume 9, Issue 2,   Pages 187-198 doi: 10.1007/s11708-015-0359-5

Abstract: output efficiency of a photovoltaic (PV) system, it is important to apply an efficient maximum power pointoptimum duty ratio is the input of a DC/DC boost converter which feeds a set of Moto-pump via a DC/AC inverterThe MPPT control algorithms implemented extract the maximum power point (MPP), with satisfactory performance

Keywords: photovoltaic generator (PVG)     maximum power point tracking (MPPT)     boost DC/DC converter     DC/AC inverter    

Probabilistic stability analysis of Bazimen landslide with monitored rainfall data and water level fluctuationsin Three Gorges Reservoir, China

Wengang ZHANG, Libin TANG, Hongrui LI, Lin WANG, Longfei CHENG, Tingqiang ZHOU, Xiang CHEN

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5,   Pages 1247-1261 doi: 10.1007/s11709-020-0655-y

Abstract: It is widely accepted that rainfall and periodic variation of water level are the two main factors triggeringIn this study, the Bazimen landslide located in the Three Gorges Reservoir (TGR) was back-analyzed asThe results indicate that the fluctuation of the reservoir water level plays a pivotal role in inducingslope failures, for the minimum stability coefficient occurs at the rapid decline period of water level

Keywords: reliability analysis     Bazimen landslide     rainfall     reservoir water level     slope stability    

A novel PV sub-module-level power-balancing topology for maximum power point tracking under partial shading Article

Mustafa GOKDAG,Mehmet AKBABA

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 12,   Pages 1388-1396 doi: 10.1631/FITEE.1500322

Abstract: topology benefits from the switched-capacitor (SC) converter concept and is an applica-tion for sub-module-levelpower balancing with some novelties, including stopping the switching in absence of shading, string-level

Keywords: Sub-module-level maximum power point tracking (MPPT)     Differential power processing (DPP)     Distributed    

Research on concrete structure defect repair based on three-dimensional printing

Frontiers of Structural and Civil Engineering 2024, Volume 18, Issue 5,   Pages 731-742 doi: 10.1007/s11709-024-1088-9

Abstract: To enhance the automation level of concrete defect repairs, this study proposes a computer vision-basedrobotic system, which is based on three-dimensional (3D) printing technology to repair defects.

Keywords: concrete     defect detection     3D printing     deep learning     point cloud data    

The Loading Capacity of Three Point Bending BeamWith the Resistant Force of Cohesive Crack

Wang Limin,Xu Shi ,Ren Chuanbo

Strategic Study of CAE 2007, Volume 9, Issue 2,   Pages 30-35

Abstract: cohesive crack and ultimate tension stress.Through the double-K fracture criterion and fracture model of threepoint bending beam, the effect of crack cohesive force on the fracture process is analyzed.For maximum

Keywords: cohesive crack     three point bending beam     concrete     double唱K fracture parameters     structureloading capacity    

A simple digital control algorithm for three phase shunt active filter: simulation and experimentation

Subbaraman SRINATH, Chandan KUMAR, M. P. SELVAN

Frontiers in Energy 2014, Volume 8, Issue 1,   Pages 119-128 doi: 10.1007/s11708-013-0288-0

Abstract: simple control algorithm using digital signal processor (DSP) has been proposed and realized for a three

Keywords: shunt active filter (SAF)     power quality     voltage source inverter (VSI)     digital signal processor (DSP)    

Title Author Date Type Operation

Unified power quality conditioner based on a three-level NPC inverter using fuzzy control techniques

Salim CHENNAI,M-T BENCHOUIA

Journal Article

Fault-tolerant control of an open-winding brushless doubly-fed wind power generator system with dual three-level

Shi JIN, Long SHI, Sul ADEMI, Yue ZHANG, Fengge ZHANG

Journal Article

A Novel PWM Method of Diode-clamped Multilevel Inverter at Low Modulation Indices

Xin Xiang,Zhang Qingfan,Hu Shunquan,Li Ruilai

Journal Article

Fundamental frequency and testing mode of complicated elastic clamped-plate vibration

QI Hongyuan, GUAN Yiduo

Journal Article

Three-dimensional fluorescence spectral characterization of soil dissolved organic matters in the fluctuatingwater-level zone of Kai County, Three Gorges Reservoir

Fang FANG, Yan YANG, Jinsong GUO, Hong ZHOU, Chuan FU, Zhe LI

Journal Article

A three-dimensional two-level gradient smoothing meshfree method for rainfall induced landslide simulations

Dongdong WANG, Jiarui WANG, Junchao WU, Junjun DENG, Ming SUN

Journal Article

Performance investigation of artificial intelligence based controller for three phase four leg shunt

J. JAYACHANDRAN,R. MURALI SACHITHANANDAM

Journal Article

Effects of Three-Dimensional Platform Stiffness and Layer Dimensions on Separation of Carcinoma Cells

W.G. Zhang, Z.Y. Liu, S.W. Pang

Journal Article

Isogeometric analysis based on geometric reconstruction models

Journal Article

Implementation of photovoltaic water pumping system with MPPT controls

Najet REBEI,Ali HMIDET,Rabiaa GAMMOUDI,Othman HASNAOUI

Journal Article

Probabilistic stability analysis of Bazimen landslide with monitored rainfall data and water level fluctuationsin Three Gorges Reservoir, China

Wengang ZHANG, Libin TANG, Hongrui LI, Lin WANG, Longfei CHENG, Tingqiang ZHOU, Xiang CHEN

Journal Article

A novel PV sub-module-level power-balancing topology for maximum power point tracking under partial shading

Mustafa GOKDAG,Mehmet AKBABA

Journal Article

Research on concrete structure defect repair based on three-dimensional printing

Journal Article

The Loading Capacity of Three Point Bending BeamWith the Resistant Force of Cohesive Crack

Wang Limin,Xu Shi ,Ren Chuanbo

Journal Article

A simple digital control algorithm for three phase shunt active filter: simulation and experimentation

Subbaraman SRINATH, Chandan KUMAR, M. P. SELVAN

Journal Article