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Reasonable Rated Voltage of High and Medium Power Adjustable-Speed Drives for Energy Saving

Ma Xiaoliang

Strategic Study of CAE 2001, Volume 3, Issue 11,   Pages 80-84

Abstract:

A large amount of energy will be saved if adjustable-speed drives are adopted by high and medium powerThe power range of most of the drives is within 0.2～2 MW.The rated voltage of most of the motors in the power range is 10 kV because the power supply is 10 kVelectronic devices in series and its cost is high and reliability is poorer than lower voltage one.The reasonable rated voltages of motors and inverters with different power grades are investigated and

Keywords： high and medium power     adjustable-speed drives for energy saving     reasonable rated voltage     low voltageinverters     medium voltage inverters     by-pass    

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Possible role of power-to-heat and power-to-gas as flexible loads in German medium voltage networks

Mark KUPRAT, Martin BENDIG, Klaus PFEIFFER

Frontiers in Energy 2017, Volume 11, Issue 2,   Pages 135-145 doi: 10.1007/s11708-017-0472-8

Abstract: As an option to cope with those problems, the technologies of power-to-gas (PtG) and power-to-heat (PtH, the network-supporting abilities and the potential to provide ancillary services, such as control power

Keywords： power-to-gas     power-to-heat     flexible loads     ancillary services     coherent energy systems    

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Behavior of steel fiber–reinforced high-strength concrete at medium strain rate

Chujie JIAO, Wei SUN, Shi HUAN, Guoping JIANG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 131-136 doi: 10.1007/s11709-009-0027-0

Abstract: Impact compression experiments for the steel fiber–reinforced high-strength concrete (SFRHSC) at mediumtoughness of the matrix were improved remarkably because of the superposition effect of the aggregate high-strengthmatrix and steel fiber high-strength matrix.

Keywords： steel fiber–reinforced high-strength concrete (SFRHSC)     high strain rates     split Hopkinson press bar (SHPB    

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Cutting heat dissipation in high-speed machining of carbon steel based on the calorimetric method

QUAN Yanming, HE Zhenwei, DOU Yong

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 2,   Pages 175-179 doi: 10.1007/s11465-008-0022-5

Abstract: The cutting heat dissipation in chips, workpiece, tool and surroundings during the high-speed machiningWater is used as the medium to absorb the cutting heat; a self-designed container suitable for the high-speedThe temperature variations of the water, chips, workpiece, tool and surroundings during the closed high-speedMoreover, the power resulting from the main cutting force is obtained according to the measured cuttingmeasurement by the calorimetric method is finally evaluated by comparing the total cutting heat flux with the power

Keywords： cutting system     medium     temperature     flux     tool    

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Evaluation of the power consumption of a high-speed parallel robot

Gang HAN, Fugui XIE, Xin-Jun LIU

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 2,   Pages 167-178 doi: 10.1007/s11465-017-0456-8

Abstract:

An inverse dynamic model of a high-speed parallel robot is established based on the virtual work principleWith this dynamic model, a new evaluation method is proposed to measure the power consumption of theThese indices can evaluate the power input and output transmissibility of the robot in a workspace.The distributions of the power input and output transmissibility of the high-speed parallel robot areFurtherly, a low-power-consumption workspace is selected for the robot.

Keywords： high-speed parallel robot     dynamic model     power consumption     evaluation method     power vector    

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Uncoupled state space solution to layered poroelastic medium with anisotropic permeability and compressible

Zhiyong AI, Wenze ZENG, Yichong CHENG, Chao WU

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2,   Pages 171-179 doi: 10.1007/s11709-011-0103-0

Abstract: presents an uncoupled state space solution to three-dimensional consolidation of layered poroelastic mediumStarting from the basic equations of poroelastic medium, and introducing intermediate variables, theadjacent layers and boundary conditions, the uncoupled state space solution of a layered poroelastic mediumcompressibility of pore fluid have remarkable influence on the consolidation behavior of poroelastic medium

Keywords： uncoupled state space solution     layered poroelastic medium     three-dimensional consolidation     anisotropic    

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Parameter identification of interconnected power system frequency after trip-out of high voltage transmission

Xuzhan ZHOU,Shanshan LIU,Mingkun WANG,Yiping DAI,Yaohua TANG

Frontiers in Energy 2014, Volume 8, Issue 3,   Pages 386-393 doi: 10.1007/s11708-014-0323-9

Abstract: Accurate modeling and parameters of high voltage (HV) grid are critical for stability research of systemIn this paper, simulation modeling of the system frequency was conducted of an interconnected power systemThe results of this paper can provide reference for the stability research of HV power grid.

Keywords： high voltage (HV) grid     frequency stability parameter identification     primary frequency regulation (PFR    

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Liquid-based high-temperature receiver technologies for next-generation concentrating solar power: A

Frontiers in Energy 2023, Volume 17, Issue 1,   Pages 16-42 doi: 10.1007/s11708-023-0866-8

Abstract: To reduce the levelized cost of energy for concentrating solar power (CSP), the outlet temperature ofanti-corrosion receiver materials is promising to tackle the corrosion problems of chloride salts at highliquid sodium is used as the heat transfer fluid while the molten chloride salt is used as the storage medium

Keywords： next-generation concentrating solar power     liquid-based solar receiver     molten salt     liquid metals    

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Effects of rotor and stator geometry on dissolution process and power consumption in jet-flow high shear

Lin Yang, Wenpeng Li, Junheng Guo, Wei Li, Baoguo Wang, Minqing Zhang, Jinli Zhang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 384-398 doi: 10.1007/s11705-020-1928-7

Abstract: The jet-flow high shear mixer (JF-HSM) is a new type of intensified equipment with special configurationsThe mass transfer property and power consumption were studied in the solid-liquid system for a seriesResults indicate that the turbulent power consumption of the JF-HSM is affected by the change in rotorbackward-curved blade, the solid-liquid mass transfer rate can be remarkably increased under the same input powerDimensionless correlations for the mass transfer coefficient and power consumption were obtained to guide

Keywords： jet-flow high shear mixer     solid particle dissolution     power consumption characteristics     CFD Simulation    

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Preparation of solar selective absorbing CuO coating for medium temperature application

HUANG Qunwu, WANG Yiping, LI Jinhua

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3,   Pages 256-260 doi: 10.1007/s11705-007-0046-0

Abstract: A new method of preparing CuO solar selective absorbing coating for medium temperature is presented.

Keywords： photoelectron spectroscopy     temperature     pretreatment     absorptivity     microscopy    

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Frontier of continuous structural health monitoring system for short & medium span bridges and condition

Ayaho MIYAMOTO, Risto KIVILUOMA, Akito YABE

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 569-604 doi: 10.1007/s11709-018-0498-y

Abstract: is becoming an important social problem to make maintenance and rehabilitation of existing short and mediumspan(10-20 m) bridges because there are a huge amount of short and medium span bridges in service inalso a continuous data collecting system designed for bridge health monitoring of mainly short and mediumIn this paper, although there are some useful monitoring methods for short and medium span bridges basedThe first is a special designed mobile loading device(vehicle) for short and medium span road bridges

Keywords： condition assessment     short & medium span bridge     structural health monitoring(SHM)     long-term data collection    

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The practice and experience of construction and management for large and medium water projects

Zhang Jiyao

Strategic Study of CAE 2011, Volume 13, Issue 8,   Pages 22-25

Abstract: expounded the duty main body, management emphasis, effective measures and successful cases of large and medium

Keywords： large and medium water projects     item management     practice and experience    

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Experimental investigation of liquid metal alloy based mini-channel heat exchanger for high power electronic

Manli LUO, Jing LIU

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 479-486 doi: 10.1007/s11708-013-0277-3

Abstract: efficient techniques for cooling integrated electronic devices with ever increasing heat generation powerTo better tackle the high-density heat dissipation difficulty within the limited space, this paper is

Keywords： heat exchanger     liquid metal     mini-channel     heat dissipation     heat transfer coefficient    

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Challenges of high dam construction to computational mechanics

ZHANG Chuhan

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 1,   Pages 12-33 doi: 10.1007/s11709-007-0002-6

Abstract: The current situations and growing prospects of China s hydro-power development and high dam constructionare reviewed, giving emphasis to key issues for safety evaluation of large dams and hydro-power plantsvelocity flow and energy dissipation for high dams, scientific and technical problems of hydro-powerSome examples demonstrating successful utilizations of computational mechanics in high dam engineeringTo make more use of the computational mechanics in high dam engineering, it is pointed out that much

Keywords： reservoir     engineering     hydro-power development     state-of-the-art computational     earthquake    

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Development and advances in modular multilevel converter based HVDC projects in China

Frontiers of Engineering Management   Pages 183-189 doi: 10.1007/s42524-022-0248-7

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Keywords： high voltage direct current     power converter     power systems     renewable energy     ultra-high voltage    

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Title Author Date Type Operation

Reasonable Rated Voltage of High and Medium Power Adjustable-Speed Drives for Energy Saving

Ma Xiaoliang

Journal Article

Possible role of power-to-heat and power-to-gas as flexible loads in German medium voltage networks

Mark KUPRAT, Martin BENDIG, Klaus PFEIFFER

Journal Article

Behavior of steel fiber–reinforced high-strength concrete at medium strain rate

Chujie JIAO, Wei SUN, Shi HUAN, Guoping JIANG

Journal Article

Cutting heat dissipation in high-speed machining of carbon steel based on the calorimetric method

QUAN Yanming, HE Zhenwei, DOU Yong

Journal Article

Evaluation of the power consumption of a high-speed parallel robot

Gang HAN, Fugui XIE, Xin-Jun LIU

Journal Article

Uncoupled state space solution to layered poroelastic medium with anisotropic permeability and compressible

Zhiyong AI, Wenze ZENG, Yichong CHENG, Chao WU

Journal Article

Parameter identification of interconnected power system frequency after trip-out of high voltage transmission

Xuzhan ZHOU,Shanshan LIU,Mingkun WANG,Yiping DAI,Yaohua TANG

Journal Article

Liquid-based high-temperature receiver technologies for next-generation concentrating solar power: A

Journal Article

Effects of rotor and stator geometry on dissolution process and power consumption in jet-flow high shear

Lin Yang, Wenpeng Li, Junheng Guo, Wei Li, Baoguo Wang, Minqing Zhang, Jinli Zhang

Journal Article

Preparation of solar selective absorbing CuO coating for medium temperature application

HUANG Qunwu, WANG Yiping, LI Jinhua

Journal Article

Frontier of continuous structural health monitoring system for short & medium span bridges and condition

Ayaho MIYAMOTO, Risto KIVILUOMA, Akito YABE

Journal Article

The practice and experience of construction and management for large and medium water projects

Zhang Jiyao

Journal Article

Experimental investigation of liquid metal alloy based mini-channel heat exchanger for high power electronic

Manli LUO, Jing LIU

Journal Article

Challenges of high dam construction to computational mechanics

ZHANG Chuhan

Journal Article

Development and advances in modular multilevel converter based HVDC projects in China

Journal Article