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Constriction factor based particle swarm optimization for analyzing tuned reactive power dispatch

Syamasree BISWAS(RAHA), Kamal Krishna MANDAL, Niladri CHAKRABORTY

Frontiers in Energy 2013, Volume 7, Issue 2,   Pages 174-181 doi: 10.1007/s11708-013-0246-x

Abstract: The reactive power dispatch (RPD) problem is a very critical optimization problem of power system whichminimizes the real power loss of the transmission system.In connection with the RPD problem, solving reactive power is compensated by incorporating shunt capacitorsAdditionally, the constriction factor is included with the conventional PSO technique to accelerate the

Keywords： real power loss minimization     voltage stability     constriction factor     particle swarm optimization (PSO)    

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Robust control based on the Lyapunov theory of a grid-connected doubly fed induction generator

Ridha CHEIKH, Arezki MENACER, Said DRID

Frontiers in Energy 2013, Volume 7, Issue 2,   Pages 191-196 doi: 10.1007/s11708-013-0245-y

Abstract: to ameliorate the performances of the control and to govern the developed stator active and reactive poweroptimal operation of the DFIG in sub-synchronous operation is given, as well as the control stator powerflow with the possibility of keeping stator power factor at a unity.

Keywords： doubly fed induction generator (DFIG)     vector control     Lyapunov function     power factor unity     active power     reactive power    

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Dynamic modelling and simulation of a post-combustion CO capture process for coal-fired power plants

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 198-209 doi: 10.1007/s11705-021-2057-7

Abstract: post-combustion capture technologies have great potential for CO2 mitigation in traditional coal-fired powerfirst-principle approach to develop the basic structure of a reduced-order model and then the dominant factorThen, impacts of liquid-to-gas ratio, reboiler power, desorber pressure, tower height and their combinationconjunction with the flue gas flow, and the gas-liquid ratio can be optimized to reduce the reboiler power

Keywords： CO2 capture     post-combustion capture     simulation     dominant factor    

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An improved delta-star switching scheme for reactive power saving in three-phase induction motors

P. RAJA,N. KUMARESAN,M. SUBBIAH

Frontiers in Energy 2014, Volume 8, Issue 3,   Pages 364-370 doi: 10.1007/s11708-014-0324-8

Abstract: method of choosing a suitable value for the capacitor and the criteria to be adopted for calculating the powerAny further improvement in grid side power factor can be achieved by employing a static synchronous compensator

Keywords： delta-star switching     induction motor     power factor     steady-state analysis    

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Application of fuzzy logic control algorithm as stator power controller of a grid-connected doubly-fed

Ridha CHEIKH, Arezki MENACER, Said DRID, Mourad TIAR

Frontiers in Energy 2013, Volume 7, Issue 1,   Pages 49-55 doi: 10.1007/s11708-012-0217-7

Abstract: This paper discusses the power outputs control of a grid-connected doubly-fed induction generator (DFIG) for a wind power generation systems.The DFIG structure control has a six diode rectifier and a PWM IGBT converter in order to control the powerSo, to supply commercially the electrical power to the grid without any problems related to power qualityflow with the possibility of keeping stator power factor at a unity.

Keywords： doubly-fed induction generator (DFIG)     vector control     fuzzy logic controller     optimization     power factorunity     active and reactive power    

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Robust direct power control based on the Lyapunov theory of a grid-connected brushless doubly fed induction

M. Abdelbasset MAHBOUB,Said DRID,M. A. SID,Ridha CHEIKH

Frontiers in Energy 2016, Volume 10, Issue 3,   Pages 298-307 doi: 10.1007/s11708-016-0411-0

Abstract: This paper deals with robust direct power control of a grid-connected brushless doubly-fed inductionis made to improve the desired performances by controlling the generated stator active and reactive powerThus, an optimal operation of the BDFIG in sub-synchronous operation is obtained as well as the stator powerflows with the possibility of keeping stator power factor at a unity.

Keywords： brushless doubly fed induction generator (BDFIG)     vector control     Lyapunov theory     power factor unity     activeand reactive power    

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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: The simulation and prototype construction of SAF is conducted to compensate the reactive power and harmonicssimulation results in reducing the total harmonic distortion (THD) of the source current and achieving unity powerfactor.

Keywords： shunt active filter (SAF)     power quality     voltage source inverter (VSI)     digital signal processor (DSP)     total harmonic distortion (THD)     power factor improvement    

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Role of the forkhead transcription factor FOXO-FOXM1 axis in cancer and drug resistance

Fung Zhao, Eric W.-F. Lam

Frontiers of Medicine 2012, Volume 6, Issue 4,   Pages 376-380 doi: 10.1007/s11684-012-0228-0

Abstract: Recent research shows that the forkhead transcription factor FOXM1 is a direct transcriptional target

Keywords： FOXO3a     FOXM1     transcription factor     cancer     drug resistance     tumorigenesis    

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Simulation Research on PWM Control in Excitation System of Generator

Jia Guixi,Xu Wei,Guo Baoyue,Zhang Chentang

Strategic Study of CAE 2005, Volume 7, Issue 6,   Pages 50-53

Abstract:

A high quality excitation system not only plays an important role in the stability of power systembut also can improve the performance of generators and power system.quality of generator’s supply by achieving low harmonic current conversion and improving high powerfactor transform of excitation unit.the obvious effect on the inprovement of the output of generator and increase of adopting efficiency power

Keywords： PWM     high power factor     excitation system     Matlab simulation    

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LSSVM-based approach for refining soil failure criteria and calculating safety factor of slopes

Shiguo XIAO; Shaohong LI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 7,   Pages 871-881 doi: 10.1007/s11709-022-0863-8

Abstract: failure criteria of practical soil mass are very complex, and have significant influence on the safety factorThe Coulomb strength criterion and the power-law failure criterion are classically simplified.learning-based failure criterion is better than those of the linear Coulomb criterion and nonlinear power-lawto determine the failure criterion, the limit equilibrium method can be used to calculate the safety factorAnalysis of results of the safety factor of two three-dimensional homogeneous slopes shows that the maximum

Keywords： slope stability     safety factor     failure criterion     least square support vector machine    

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lncR-GAS5 upregulates the splicing factor to impair endothelial autophagy, leading to atherogenesis

Frontiers of Medicine 2023, Volume 17, Issue 2,   Pages 317-329 doi: 10.1007/s11684-022-0931-4

Abstract: Moreover, serine/arginine-rich splicing factor 10 (SRSF10) knockdown increased the LC3II/LC3IMechanistically, lncR-GAS5 regulated the downstream splicing factor SRSF10 to impair autophagy

Keywords： lncR-GAS5     miR-193-5p     splicing factor SRSF10     autophagy     atherogenesis    

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The calculation of equivalence factor for ecological footprints in China: a methodological note

Moucheng LIU,Wenhua LI,Dan ZAHNG,Ning SU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 1015-1024 doi: 10.1007/s11783-014-0670-0

Abstract: land area types with different levels of productivity, they introduced the concept of an equivalence factorSecondly, China’s equivalence factor for 6 land area types was calculated based on NPP: arable land andbuilt-up land has an equivalence factor of 1.71, forest and fossil energy land has a factor of 1.41,pasture has a factor of 0.44 and water/fishery 0.35; Finally, the equivalence factor of 6 land areaThe NPP of each ecosystem type varies along with the equivalence factor in different provinces.

Keywords： ecological footprint     equivalence factor     net primary production     biological capacity     land types    

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A practical multi-lane factor model of bridges based on multi-truck presence considering lane load disparities

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 877-894 doi: 10.1007/s11709-021-0756-2

Abstract: Many bridge design specifications consider multi-lane factors (MLFs) a critical component of the traffic load model. Measured multi-lane traffic data generally exhibit significant lane disparities in traffic loads over multiple lanes. However, these disparities are not considered in current specifications. To address this drawback, a multi-coefficient MLF model was developed based on an improved probabilistic statistical approach that considers the presence of multiple trucks. The proposed MLF model and approach were calibrated and demonstrated through an example site. The model sensitivity analysis demonstrated the significant influence of lane disparity of truck traffic volume and truck weight distribution on the MLF. Using the proposed approach, the experimental site study yielded MLFs comparable with those directly calculated using traffic load effects. The exclusion of overloaded trucks caused the proposed approach, existing design specifications, and conventional approach of ignoring lane load disparity to generate comparable MLFs, while the MLFs based on the proposed approach were the most comprehensive. The inclusion of overloaded trucks caused the conventional approach and design specifications to overestimate the MLFs significantly. Finally, the benefits of the research results to bridge practitioners were discussed.

Keywords： bridges     multi-lane factor     traffic load     lane load disparity     multi-truck presence     weigh-in-motion    

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Numerical investigation of the influence of kinetics and shape factor on barium sulfate precipitation

Zheng WANG, Zai-Sha MAO, Chao YANG, Qinghua ZHANG, Jingcai CHENG

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 3,   Pages 272-281 doi: 10.1007/s11705-009-0023-x

Abstract: The effect of kinetics and shape factor on barium sulfate precipitation in a continuous stirred tankThe simulation results show that the value of shape factor used in the model affected greatly the meanIt is important to investigate the relationship of the shape factor with the precipitator type and other

Keywords： stirred tank     numerical simulation     precipitation     shape factor     crystal kinetics    

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The formation mechanism and the influence factor of residual stress in machining

Zhaoxu QI,Bin LI,Liangshan XIONG

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3,   Pages 265-269 doi: 10.1007/s11465-014-0311-0

Abstract: An important conclusion is drawn that the accumulated plastic strain is the main factor which determines

Keywords： residual stress     analytical model     strain     plastic     cutting parameter    

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Title Author Date Type Operation

Constriction factor based particle swarm optimization for analyzing tuned reactive power dispatch

Syamasree BISWAS(RAHA), Kamal Krishna MANDAL, Niladri CHAKRABORTY

Journal Article

Robust control based on the Lyapunov theory of a grid-connected doubly fed induction generator

Ridha CHEIKH, Arezki MENACER, Said DRID

Journal Article

Dynamic modelling and simulation of a post-combustion CO capture process for coal-fired power plants

Journal Article

An improved delta-star switching scheme for reactive power saving in three-phase induction motors

P. RAJA,N. KUMARESAN,M. SUBBIAH

Journal Article

Application of fuzzy logic control algorithm as stator power controller of a grid-connected doubly-fed

Ridha CHEIKH, Arezki MENACER, Said DRID, Mourad TIAR

Journal Article

Robust direct power control based on the Lyapunov theory of a grid-connected brushless doubly fed induction

M. Abdelbasset MAHBOUB,Said DRID,M. A. SID,Ridha CHEIKH

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

Role of the forkhead transcription factor FOXO-FOXM1 axis in cancer and drug resistance

Fung Zhao, Eric W.-F. Lam

Journal Article

Simulation Research on PWM Control in Excitation System of Generator

Jia Guixi,Xu Wei,Guo Baoyue,Zhang Chentang

Journal Article

LSSVM-based approach for refining soil failure criteria and calculating safety factor of slopes

Shiguo XIAO; Shaohong LI

Journal Article

lncR-GAS5 upregulates the splicing factor to impair endothelial autophagy, leading to atherogenesis

Journal Article

The calculation of equivalence factor for ecological footprints in China: a methodological note

Moucheng LIU,Wenhua LI,Dan ZAHNG,Ning SU

Journal Article

A practical multi-lane factor model of bridges based on multi-truck presence considering lane load disparities

Journal Article

Numerical investigation of the influence of kinetics and shape factor on barium sulfate precipitation

Zheng WANG, Zai-Sha MAO, Chao YANG, Qinghua ZHANG, Jingcai CHENG

Journal Article

The formation mechanism and the influence factor of residual stress in machining

Zhaoxu QI,Bin LI,Liangshan XIONG

Journal Article