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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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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 high

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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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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Effect of cavity defect on the triaxial mechanical properties of high-performance concrete

Yanbin ZHANG; Zhe WANG; Mingyu FENG

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 5,   Pages 600-614 doi: 10.1007/s11709-022-0821-5

Abstract: concentration of pipe structure or cavity defect has a great effect on the mechanical properties of the high-performanceMoreover, the cavity weakens the strength of the sample, and this study gives a modified Power-law criterion

Keywords： high-performance concrete     cavity     conventional triaxial compression     pressurized liquid     modified power-law    

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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 voltage    

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Review of recent advances of polymer based dielectrics for high-energy storage in electronic power devices

Wenjie Sun, Jiale Mao, Shuang Wang, Lei Zhang, Yonghong Cheng

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 1,   Pages 18-34 doi: 10.1007/s11705-020-1939-4

Abstract: However, although the functions of dielectrics in applications like high-voltage direct current transmissionprojects, distributed energy systems, high-power pulse systems and new energy electric vehicles areLow electric loss is a critical prerequisite for capacitors for electric grids, while high-temperatureRequirements for polymer-based dielectrics in various power electronic equipment are emphasized, includinghigh energy storage density, low dissipation, high working temperature and fast-response time.

Keywords： dielectric capacitors     polymer-based dielectrics     energy density     dielectric loss     working temperature     frequency response    

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Study of China high-speed railway traction power supply key technology

Qian Qingquan,Gao Shibin,He Zhengyou,Chen Qizhi and Wu Jiqin

Strategic Study of CAE 2015, Volume 17, Issue 4,   Pages 9-20

Abstract:

The theoretical analysis and key technologies for high-speed railway（HSR） TPSS are needed to be studiedFirstly，a series of key basic theories and technologies of high-speed railway TPSS are described in thisMeanwhile，on the present development situation of traction power supply system，the new technologies areprospect such as the new power supply technology，active operation and maintenance，energy saving andThis will provide guidance for the development and application of China high-speed rail traction power

Keywords： high-speed railway；traction power supply system；key technology    

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vapor deposition of excellent a-Si:H passivation layers for a-Si:H/c-Si heterojunction solar cells at highpressure and high power

Lei ZHAO,Wenbin ZHANG,Jingwei CHEN,Hongwei DIAO,Qi WANG,Wenjing WANG

Frontiers in Energy 2017, Volume 11, Issue 1,   Pages 85-91 doi: 10.1007/s11708-016-0437-3

Abstract: However, at the low deposition pressure and low deposition power, such an a-Si:H layer can be only preparedthis paper, intrinsic a-Si:H layers were prepared on n-type Cz c-Si substrates by 27.12 MHz PECVD at a highdeposition pressure and high deposition power.that an excellent a-Si:H passivation layer could be obtained in a very wide deposition pressure and power

Keywords： PECVD     high pressure and high power     a-Si:H microstructure     passivation     heterojunction solar cell    

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Development of high pulsed-power source based on linear transformer driver for direct-driven Z pinch

Sun Fengju,Qiu Aici,Zeng Zhengzhong,Zeng Jiangtao,Cong Peitian

Strategic Study of CAE 2009, Volume 11, Issue 11,   Pages 56-63

Abstract:

The paper introduced the properties of pulsed power source based on fast(FLTD), and summarized the latest developments of FLTD-Z module and the conception design of pulsed powerFLTD such as Z-POP for verifying the availability of IFE, and the next generation direct-driven pulsed power

Keywords： fast Z pinch     direct driven     FLTD pulsed-power source     high power pulsed accelerator     conception design    

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Thermal performance of a single-layer packed metal pebble-bed exposed to high energy fluxes

Shengchun ZHANG, Zhifeng WANG, Hui BIAN, Pingrui HUANG

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 513-528 doi: 10.1007/s11708-019-0638-7

Abstract: It is difficult to accurately measure the temperature of the falling particle receiver since thermocouples may directly be exposed to the solar flux. This study analyzes the thermal performance of a packed bed receiver using large metal spheres to minimize the measurement error of particle temperature with the sphere temperature reaching more than 700°C in experiments in a solar furnace and a solar simulator. The numerical models of a single sphere and multiple spheres are verified by the experiments. The multiple spheres model includes calculations of the external incidence, view factors, and heat transfer. The effects of parameters on the temperature variations of the spheres, the transient thermal efficiency, and the temperature uniformity are investigated, such as the ambient temperature, particle thermal conductivity, energy flux, sphere diameter, and sphere emissivity. When the convection is not considered, the results show that the sphere emissivity has a significant influence on the transient thermal efficiency and that the temperature uniformity is strongly affected by the energy flux, sphere diameter, and sphere emissivity. As the emissivity increases from 0.5 to 0.9, the transient thermal efficiency and the average temperature variance increase from 53.5% to 75.7% and from 14.3% to 27.1% at 3.9 min, respectively. The average temperature variance decreases from 29.7% to 9.3% at 2.2 min with the sphere diameter increasing from 28.57 mm to 50 mm. As the dimensionless energy flux increases from 0.8 to 1.2, the average temperature variance increases from 13.4% to 26.6% at 3.4 min.

Keywords： packed bed     solar thermal power plants     high heat fluxes     radiative heat transfer    

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Impact of selection of DC base values and DC link control strategies on sequential AC-DC power-flow convergence

Shagufta KHAN,Suman BHOWMICK

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 399-412 doi: 10.1007/s11708-015-0374-6

Abstract: This paper demonstrates the convergence of the integrated AC-DC power-flow algorithm as affected by theFor power-flow modeling of integrated AC-DC systems, the base values of the various DC quantities canIt is observed that different per-unit system models affect the convergence of the power-flow algorithmIn a similar manner, the control strategy adopted for the DC link also affects the power-flow convergenceThe sequential method is used to solve the DC variables in the Newton Raphson (NR) power flow model,

Keywords： AC-DC power-flow     Newton-Raphson method     high voltage direct current (HVDC) control strategy    

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Title Author Date Type Operation

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

Gang HAN, Fugui XIE, Xin-Jun LIU

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

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

Effect of cavity defect on the triaxial mechanical properties of high-performance concrete

Yanbin ZHANG; Zhe WANG; Mingyu FENG

Journal Article

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

Ma Xiaoliang

Journal Article

Review of recent advances of polymer based dielectrics for high-energy storage in electronic power devices

Wenjie Sun, Jiale Mao, Shuang Wang, Lei Zhang, Yonghong Cheng

Journal Article

Study of China high-speed railway traction power supply key technology

Qian Qingquan,Gao Shibin,He Zhengyou,Chen Qizhi and Wu Jiqin

Journal Article

vapor deposition of excellent a-Si:H passivation layers for a-Si:H/c-Si heterojunction solar cells at highpressure and high power

Lei ZHAO,Wenbin ZHANG,Jingwei CHEN,Hongwei DIAO,Qi WANG,Wenjing WANG

Journal Article

Development of high pulsed-power source based on linear transformer driver for direct-driven Z pinch

Sun Fengju,Qiu Aici,Zeng Zhengzhong,Zeng Jiangtao,Cong Peitian

Journal Article

Thermal performance of a single-layer packed metal pebble-bed exposed to high energy fluxes

Shengchun ZHANG, Zhifeng WANG, Hui BIAN, Pingrui HUANG

Journal Article

Impact of selection of DC base values and DC link control strategies on sequential AC-DC power-flow convergence

Shagufta KHAN,Suman BHOWMICK

Journal Article