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Anti-erosion elastic coating design based on synchronous fluctuation principle

Guo Yuanjun,Xiao Hualin,Xu Daqing,Li Wenbin

Strategic Study of CAE 2008, Volume 10, Issue 9,   Pages 60-63

Abstract: The condition of realized synchronous fluctuation of elastic coating channel border with the perturbation

Keywords： erosion     boundary layer     elastic channel border     elastic coating     synchronous fluctuation    

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Power fluctuation and power loss of wind turbines due to wind shear and tower shadow

Binrong WEN, Sha WEI, Kexiang WEI, Wenxian YANG, Zhike PENG, Fulei CHU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 321-332 doi: 10.1007/s11465-017-0434-1

Abstract: This study investigates the effects of wind shear and tower shadow on power output in terms of power fluctuationPower fluctuation and power loss due to wind shear and tower shadow are analyzed by performing theoreticalResults indicate that power fluctuation is mainly caused by tower shadow, whereas power loss is primarily

Keywords： wind turbine     wind shear     tower shadow     power fluctuation     power loss    

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A novel light fluctuation spectrum method for in-line particle sizing

Shouxuan QIN, Xiaoshu CAI, Li MA

Frontiers in Energy 2012, Volume 6, Issue 1,   Pages 89-97 doi: 10.1007/s11708-012-0176-z

Abstract: This paper discusses two problems in in-line particle sizing when using light fluctuation method.

Keywords： measurement     particle size distribution (PSD)     incident light intensity     particle concentration     light fluctuation    

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Modeling and control of a permanent magnet synchronous generator dedicated to standalone wind energy

Louar FATEH,Ouari AHMED,Omeiri AMAR,Djellad ABDELHAK,Bouras LAKHDAR

Frontiers in Energy 2016, Volume 10, Issue 2,   Pages 155-163 doi: 10.1007/s11708-016-0410-1

Abstract: To limit these inconveniences, certain manufacturers developed wind turbines based on synchronous machinesThe control of the permanent magnet synchronous generator (PMSG) can be affected with the implementation

Keywords： wind turbine     permanent magnet synchronous generator (PMSG)     converter     proportional-integral (PI)     control    

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Equivalent circuit and characteristic simulation of a brushless electrically excited synchronous wind

Hao WANG, Fengge ZHANG, Tao GUAN, Siyang YU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 420-426 doi: 10.1007/s11465-017-0439-9

Abstract:

A brushless electrically excited synchronous generator (BEESG) with a hybrid rotor is a novel electricallyexcited synchronous generator.

Keywords： wind power     brushless electrically excited synchronous generator     hybrid rotor     equivalent circuit    

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Robust nonlinear control via feedback linearization and Lyapunov theory for permanent magnet synchronous

Ridha CHEIKH, Arezki MENACER, L. CHRIFI-ALAOUI, Said DRID

Frontiers in Energy 2020, Volume 14, Issue 1,   Pages 180-191 doi: 10.1007/s11708-018-0537-3

Abstract: In this paper, the method for the nonlinear control design of a permanent magnet synchronous generator

Keywords： permanent magnet synchronous generator     wind energy conversion system     stochastic     differential geometric    

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Synchronous observation of rising soluble bubble through quiescent solution

Yifu ZHANG , Shuai TIAN , Weizhong LI , Yongchen SONG ,

Frontiers in Energy 2009, Volume 3, Issue 3,   Pages 307-312 doi: 10.1007/s11708-009-0028-7

Abstract: An experimental method using computer image processing technology (CIPT) was proposed to observe and investigate the velocity, deformation, heat and mass transfer, etc. of a rising soluble gas (CO) bubble through a quiescent hot water. A model was set up to describe the behavior of the bubble in a visual experimental system in which a high-speed camera rose instantaneously with the movement of the bubble. A series of trajectory videos about the bubble were recorded by a computer linked to the camera. The trajectory, volume changes and rate of mass transfer of the bubble were obtained by the CIPT. It is found that the single bubble follows a rolling trajectory at the initial stage when there is mass transfer. With the volume decreasing, the disturbed behavior of the bubble becomes tempered. When the rising velocity of the bubble reaches the maximum, the velocity is nearly at a constant. The experimental and analysis results show that this method is useful for the research on the mass transfer and the movement of rising bubbles in liquid.

Keywords： soluble bubble     mass transfer     synchronous observation     computer image processing    

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Optimization design of an interior permanent-magnet synchronous machine for a hybrid hydraulic excavator

Qi-huai CHEN,Qing-feng WANG,Tao WANG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 11,   Pages 957-968 doi: 10.1631/FITEE.1500056

Abstract: In this paper, a design process for permanent-magnet synchronous machines (PMSMs) in a hybrid hydraulic

Keywords： Hybrid hydraulic excavator (HHE)     Finite element method (FEM)     Interior permanent-magnet (PM) motor     PM synchronous    

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Optimal portfolio design of energy storage devices with financial and physical right market

Frontiers in Energy 2022, Volume 16, Issue 1,   Pages 95-104 doi: 10.1007/s11708-021-0788-2

Abstract: of energy storage and avoid the imbalance of power supply and consumption and the risk of node price fluctuation

Keywords： portfolio     node price fluctuation     transmission right     energy storage right     risk aversion    

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Temperature Prediction for Sun Synchronous Satellite on Orbit

Wei Chuanfeng,Li Yunze,Yuan Lingshuang,Wang Jun,Ning Xianwen

Strategic Study of CAE 2005, Volume 7, Issue 2,   Pages 73-75

Abstract:

Temperature prediction on-line for sun synchronous satellite is very essential.

Keywords： sun synchronous satellite     on orbit     temperature predict    

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Selection and characterization of eight freshwater green algae strains for synchronous water purification

Jingjing ZHAN,Qiao ZHANG,Momei QIN,Yu HONG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 3,   Pages 548-558 doi: 10.1007/s11783-016-0831-4

Abstract: The objective of this study is to select and characterize the candidate for synchronous water purificationHQ to serve for algae-based synchronous biodiesel production and wastewater purification.

Keywords： freshwater microalgae     biomass production     lipid accumulation     nutrient removal    

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Synchronous grouting of large diameter slurry shield in water-rich sandy gravel stratum

Zhang Changqiang,Zhai Zhiguo,Chen Mingjuan,Jin Zhongxiang

Strategic Study of CAE 2010, Volume 12, Issue 12,   Pages 75-78

Abstract:

Through the statistical analysis of the technical data which based on shield tunneling, comprehensively considering the information of water-rich sandy gravel stratum, such as the tunneling parameter of the slurry shield machine, slurry parameter, shield posture and stratum deformation mechanism information, the empirical formula of the main parameters of synchronized grouting technologies is determined while the slurry shield is tunneling in sandy gravel stratum. It can guide the similar project construction.

Keywords： sandy gravel stratum     slurry shield     synchronous grouting     construction technology    

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A Novel Variable Speed Constant Frequency Doubly Fed Salient Pole Synchronous Machine

Ning Yuquan

Strategic Study of CAE 2004, Volume 6, Issue 12,   Pages 27-31

Abstract:

This paper presents a novel variable speed constant frequency doubly fed salient pole synchronousIt deals with basic theory and construction of variable speed salient pole synchronous machines, especially

Keywords： salient pole synchronous machines     doubly fed variable speed constant frequency     AC excited    

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Numerical simulation and analysis of periodically oscillating pressure characteristics of inviscid flow in a rolling pipe

Yan GU, Yonglin JU

Frontiers in Energy 2012, Volume 6, Issue 1,   Pages 21-28 doi: 10.1007/s11708-012-0173-2

Abstract: It is found that the pressure fluctuation of the inviscid flow remains almost constant at different flowThe amplitude of the pressure fluctuation increases with the increasing of the excitated amplitude, andIt is also found that the period of the pressure fluctuation varies with the excitated frequency.

Keywords： pressure fluctuation     rolling     floating production storage and offloading unit for liquefied natural gas    

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A novel high-temperature and high-pressure hydraulic pump based on mononeuron control

Linhui ZHAO, Xin FANG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 219-223 doi: 10.1007/s11465-009-0024-y

Abstract: Based on structures and characteristics of traditional hydraulic pumps, this paper proposes a novel high-temperature and high-pressure hydraulic pump (HHHP) that can work under 150°C and 28 MPa to overcome problems of traditional high-temperature plunger pumps. The HHHP is designed with the structure of mechanical division and double cylinder parallel. The control signals of two cylinders are two separate triangle waveforms with 90° phase difference. Because the output waveforms of two cylinders have the same characteristics as the control signals, the HHHP can obtain a stable output after two separate waveforms are superposed. A mononeuron self-adaptive PID control algorithm is also improved by modifying parameters and . Two improved controllers are used to control the two cylinders, respectively, making two displacements of plungers match each other. Therefore, reduced fluctuations and stable pressure output is obtained. Besides simulation, tests on the built prototype test system are carried out to verify the performance of HHHP. Results show that the improved control approach can limit fluctuations to a lower level and the HHHP system attains good outputs under different signal periods and different pressures.

Keywords： mononeuron PID control     hydraulic pump     pressure fluctuation    

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Title Author Date Type Operation

Anti-erosion elastic coating design based on synchronous fluctuation principle

Guo Yuanjun,Xiao Hualin,Xu Daqing,Li Wenbin

Journal Article

Power fluctuation and power loss of wind turbines due to wind shear and tower shadow

Binrong WEN, Sha WEI, Kexiang WEI, Wenxian YANG, Zhike PENG, Fulei CHU

Journal Article

A novel light fluctuation spectrum method for in-line particle sizing

Shouxuan QIN, Xiaoshu CAI, Li MA

Journal Article

Modeling and control of a permanent magnet synchronous generator dedicated to standalone wind energy

Louar FATEH,Ouari AHMED,Omeiri AMAR,Djellad ABDELHAK,Bouras LAKHDAR

Journal Article

Equivalent circuit and characteristic simulation of a brushless electrically excited synchronous wind

Hao WANG, Fengge ZHANG, Tao GUAN, Siyang YU

Journal Article

Robust nonlinear control via feedback linearization and Lyapunov theory for permanent magnet synchronous

Ridha CHEIKH, Arezki MENACER, L. CHRIFI-ALAOUI, Said DRID

Journal Article

Synchronous observation of rising soluble bubble through quiescent solution

Yifu ZHANG , Shuai TIAN , Weizhong LI , Yongchen SONG ,

Journal Article

Optimization design of an interior permanent-magnet synchronous machine for a hybrid hydraulic excavator

Qi-huai CHEN,Qing-feng WANG,Tao WANG

Journal Article

Optimal portfolio design of energy storage devices with financial and physical right market

Journal Article

Temperature Prediction for Sun Synchronous Satellite on Orbit

Wei Chuanfeng,Li Yunze,Yuan Lingshuang,Wang Jun,Ning Xianwen

Journal Article

Selection and characterization of eight freshwater green algae strains for synchronous water purification

Jingjing ZHAN,Qiao ZHANG,Momei QIN,Yu HONG

Journal Article

Synchronous grouting of large diameter slurry shield in water-rich sandy gravel stratum

Zhang Changqiang,Zhai Zhiguo,Chen Mingjuan,Jin Zhongxiang

Journal Article

A Novel Variable Speed Constant Frequency Doubly Fed Salient Pole Synchronous Machine

Ning Yuquan

Journal Article

Numerical simulation and analysis of periodically oscillating pressure characteristics of inviscid flow in a rolling pipe

Yan GU, Yonglin JU

Journal Article

A novel high-temperature and high-pressure hydraulic pump based on mononeuron control

Linhui ZHAO, Xin FANG

Journal Article