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Constant temperature control of tundish induction heating power supply for metallurgical manufacturing

Yufei YUE, Qianming XU, Peng GUO, An LUO

Frontiers in Energy 2019, Volume 13, Issue 1,   Pages 16-26 doi: 10.1007/s11708-018-0572-0

Abstract: Specially, the constant temperature control is greatly significant for metallurgical manufacturing.In terms of the relationship between TIH load temperature and output power of TIHPS, the constant temperaturecontrol can be realized by power control.Besides, an input harmonic current blocking strategy and a load voltage feedforward control are alsoproposed to realize constant temperature control.

Keywords： tundish induction heating power supply (TIHPS)     constant temperature control     input harmonic current blocking    

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Numerical investigation on side heat transfer enhancement in 300 kA aluminum reduction cell

WANG Changhong, ZHU Dongsheng, LEI Junxi, ZHOU Jiemin

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 256-260 doi: 10.1007/s11708-008-0051-0

Abstract: The 3D slice finite element model of aluminum reduction cell was developed, with which the sidewall temperatureThe results show that the shell temperature of the test cell and the common cell is respectively 312°of the shell decreases but the thickness of the side ledge increases when the electrolytic temperature, the ambient temperature, the coefficient of heat transfer between molten bath and ledge, the eutectictemperature and the thermo-resistance of the side lining are constant.

Keywords： constant     ambient temperature     thickness     electrolytic temperature     transfer process    

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Design and evaluation of control strategies in urban drainage systems in Kunming city

Xin Dong, Senchen Huang, Siyu Zeng

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0968-9

Abstract: Real time control (RTC) of urban drainage systems (UDSs) is an important measure to reduce combined sewerprinciples, a detailed design procedure is shown for the case UDS resulting in three RTC strategies: static, constant

Keywords： Urban drainage system     Real time control     Static strategy     Constant strategy     Equal filling strategy    

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Development of a dual temperature control system for isoprene biosynthesis in

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1079-1089 doi: 10.1007/s11705-021-2088-0

Abstract: conflict in yeast strains harboring the isoprene synthetic pathway in the mitochondria, the dynamic controlA dual temperature regulation system was developed through engineering and expression regulation of theCompared to the control strain with constitutively expressed wild-type Gal4p, the dual temperature regulationthe creation of the first cold-sensitive variants of Gal4p by directed evolution and provides a dual temperaturecontrol system for yeast engineering that may also be conducive to the biosynthesis of other high-value

Keywords： transcriptional activator     directed evolution     dynamic control     heat-shock     isoprene    

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Research progress on low dielectric constant modification of cellulose insulating paper for power transformers

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 8,   Pages 991-1009 doi: 10.1007/s11705-022-2259-7

Abstract: insulation level of ultrahigh voltage transformers and reduce their weight and size, reducing the dielectric constantThe dielectric constant of a cellulose insulating paper can be effectively reduced by chemical or physicalforeign and domestic research status of the use of modification technology to reduce the dielectric constantThis paper can provide a reference for further research on low dielectric constant cellulose insulating

Keywords： low dielectric constant     chemical and physical modification     cellulose insulating paper     transformer    

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Temperature effects of shape memory alloys (SMAs) in damage control design of steel portal frames

Xiaoqun LUO, Hanbin GE, Tsutomu USAMI

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 4,   Pages 348-357 doi: 10.1007/s11709-012-0176-4

Abstract: The objective of the present study is to analytically investigate temperature effects of an axial-typetypes of SMAs are employed, which have different stress plateau and different stress growth rate with temperatureTemperature effects of SMA dampers on seismic performance upgrading are discussed in three aspects: differentThe analysis indicates that the effect of environment temperature should be considered for the SMA damper

Keywords： damage control design     shape memory alloy     temperature effect    

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Temperature control of transfer roller’s bearing based on finite element analysis

Peng ZHANG, Yourong LI, Han XIAO

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 215-218 doi: 10.1007/s11465-009-0026-9

Abstract: The analysis result of the sub-model shows that the temperature of the transfer roller bearing exceeds

Keywords： transfer roller bearing     finite element analysis     sub-model     temperature control    

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Simulation Research of Temperature Control System in Air-Conditioned Coach

Yu Meichun,Zhang Dengchun

Strategic Study of CAE 2006, Volume 8, Issue 7,   Pages 83-88

Abstract:

The issue studies, in virtue of simulation, temperature control system in air-conditioned coach byfuzzy and PID control methods.The simulation results show that PID control can eliminates steady-state error, but the overtune is bigAnd PID control can only suit for air conditioning condition with small variation.a better synthetic control quality than PID.

Keywords： air-conditioned coach     temperature control     fuzzy control     simulation    

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Sliding window games for cooperative building temperature control using a distributed learning method

Zhaohui ZHANG, Ruilong DENG, Tao YUAN, S. Joe QIN

Frontiers of Engineering Management 2017, Volume 4, Issue 3,   Pages 304-314 doi: 10.15302/J-FEM-2017045

Abstract: In practice, an energy consumer often consists of a set of residential or commercial buildings, with individual units that are expected to cooperate to achieve overall optimization under modern electricity operations, such as time-of-use price. Global utility is decomposed to the payoff of each player, and each game is played over a prediction horizon through the design of a series of sliding window games by treating each building as a player. During the games, a distributed learning algorithm based on game theory is proposed such that each building learns to play a part of the global optimum through state transition. The proposed scheme is applied to a case study of three buildings to demonstrate its effectiveness.

Keywords： game theory     demand response     HVAC control     multi-building system    

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Study on Temperature Control of Trace ContaminantControl Subassembly in Manned Spacecraft

Pang Liping,Wang Jun

Strategic Study of CAE 2007, Volume 9, Issue 4,   Pages 60-63

Abstract: text-align: justify;">The catalytic oxidizer assembly(COA)is an important part of the trace contaminant controlTemperature control in COA via a new self-tuning fuzzy logical controller (FLC)is analyzed in this paperSimulation results show that the proposed self-tuning FLC is fit for controlling the temperature of COA

Keywords： manned spacecraft     catalytic oxidizer     temperature control     fuzzy control     self-tuning    

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Model and algorithm for satellite’s active temperature control loop design

Li Yunze,Yang Juan,Ning Xianwen,Wang Xiaoming,Shi Xiaobo

Strategic Study of CAE 2008, Volume 10, Issue 7,   Pages 48-50

Abstract:

Electrical heater is an important type of active thermal control methodsA dynamical equation of its control object's transient temperature change is established throughThe heating power demand calculation models at different temperature control models have been developedshows that the equations developed above can be used conveniently in satellite's active thermal control

Keywords： satellite     active thermal control     active temperature control loop     model and algorithm    

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Analysis and characterization of wind-solar-constant torque spring hybridized model

Shantanu ACHARYA,Subhadeep BHATTACHARJEE

Frontiers in Energy 2014, Volume 8, Issue 3,   Pages 279-289 doi: 10.1007/s11708-014-0312-z

Abstract: Solar and wind are the most promising renewable energy resources. But their unpredictable and varying nature prevents them from being used as the sole resource for power generation. This paper presents a model of wind and solar thermal hybrid power plant with a spring storage system which is expected to play an efficient role in combating with the drawbacks related to renewable power generation. In the proposed scheme, wind energy is harnessed by a hybrid vertical axis wind turbine, solar energy is utilized by a Stirling engine, and the surplus energy is stored in a winding spring. The paper discusses the working methodologies and analyses the performance of such 2.6 kW hybrid power plant model. It has been observed that the plant is capable of consistently generating 50% of its rated capacity irrespective of limitations in solar and wind resources.

Keywords： hybrid vertical axis wind turbine     Stirling engine     solar-thermal energy     wind energy     constant torque spring    

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Development of a fan-stirred constant volume combustion chamber and turbulence measurement with PIV

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 973-987 doi: 10.1007/s11708-021-0762-z

Abstract: A fan-stirred combustion chamber is deve-loped for spherically expanding flames, with P and T up to 10 bar and 473 K, respectively. Turbulence characteristics are estimated using particle image velocimetry (PIV) at different initial pressures (P = 0.5–5 bar), fan frequencies (ω = 0–2000 r/min), and impeller diameters (D = 100 and 114 mm). The flame propagation of methanol/air is investigated at different turbulence intensities (u′=0–1.77 m/s) and equivalence ratios (φ = 0.7–1.5). The results show that u′ is independent of P and proportional to ω, which can be up to 3.5 m/s at 2000 r/min. LT is independent of P and performs a power regression with ω approximately. The turbulent field is homogeneous and isotropic in the central region of the chamber while the inertial subrange of spatial energy spectrum is more collapsed to –5/3 law at a high ReT. Compared to laminar expanding flames, the morpho-logy of turbulent expanding flames is wrinkled and the wrinkles will be finer with the growth of turbulence intensity, consistent with the decline of the Taylor scale and the Kolmogorov scale. The determined SL in the present study is in good agreement with that of previous literature. The SL and ST of methanol/air have a non-monotonic trend with φ while peak ST is shifted to the richer side compared to SL. This indicates that the newly built turbulent combustion chamber is reliable for further experimental study.

Keywords： fan-stirred combustion chamber     turbulence characteristics     particle image velocimetry (PIV)     methanol     turbulent expanding flames    

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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: on structures and characteristics of traditional hydraulic pumps, this paper proposes a novel high-temperaturehydraulic pump (HHHP) that can work under 150°C and 28 MPa to overcome problems of traditional high-temperatureThe 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, theA mononeuron self-adaptive PID control algorithm is also improved by modifying parameters and .

Keywords： mononeuron PID control     hydraulic pump     pressure fluctuation    

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Improved three-vector based dead-beat model predictive direct power control strategy for grid-connected None

Chen-wen CHENG, Heng NIAN, Long-qi LI

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 11,   Pages 1420-1431 doi: 10.1631/FITEE.1601874

Abstract: inverter voltage vector is applied during each duty cycle, traditional model predictive direct power controlAdoption of three inverter vectors ensures a constant switching frequency.Iterative calculations of the cost function in traditional predictive control are also removed, which

Keywords： Grid-connected inverter     Model predictive control     Direct power control     Three vectors     Constant switching    

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Title Author Date Type Operation

Constant temperature control of tundish induction heating power supply for metallurgical manufacturing

Yufei YUE, Qianming XU, Peng GUO, An LUO

Journal Article

Numerical investigation on side heat transfer enhancement in 300 kA aluminum reduction cell

WANG Changhong, ZHU Dongsheng, LEI Junxi, ZHOU Jiemin

Journal Article

Design and evaluation of control strategies in urban drainage systems in Kunming city

Xin Dong, Senchen Huang, Siyu Zeng

Journal Article

Development of a dual temperature control system for isoprene biosynthesis in

Journal Article

Research progress on low dielectric constant modification of cellulose insulating paper for power transformers

Journal Article

Temperature effects of shape memory alloys (SMAs) in damage control design of steel portal frames

Xiaoqun LUO, Hanbin GE, Tsutomu USAMI

Journal Article

Temperature control of transfer roller’s bearing based on finite element analysis

Peng ZHANG, Yourong LI, Han XIAO

Journal Article

Simulation Research of Temperature Control System in Air-Conditioned Coach

Yu Meichun,Zhang Dengchun

Journal Article

Sliding window games for cooperative building temperature control using a distributed learning method

Zhaohui ZHANG, Ruilong DENG, Tao YUAN, S. Joe QIN

Journal Article

Study on Temperature Control of Trace ContaminantControl Subassembly in Manned Spacecraft

Pang Liping,Wang Jun

Journal Article

Model and algorithm for satellite’s active temperature control loop design

Li Yunze,Yang Juan,Ning Xianwen,Wang Xiaoming,Shi Xiaobo

Journal Article

Analysis and characterization of wind-solar-constant torque spring hybridized model

Shantanu ACHARYA,Subhadeep BHATTACHARJEE

Journal Article

Development of a fan-stirred constant volume combustion chamber and turbulence measurement with PIV

Journal Article

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

Linhui ZHAO, Xin FANG

Journal Article

Improved three-vector based dead-beat model predictive direct power control strategy for grid-connected

Chen-wen CHENG, Heng NIAN, Long-qi LI

Journal Article