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Laboratory experiment on using non-floating body to generate electrical energy from water waves

Arunachalam AMARKARTHIK, Srinivasan CHANDRASEKARAN, Karuppan SIVAKUMAR, Harender SINHMAR

《能源前沿（英文）》 2012年 第6卷 第4期   页码 361-365 doi: 10.1007/s11708-012-0210-1

摘要： This paper describes an innovative method of using a non-buoyant body to harness ocean waves. All the point absorbers are buoyant in nature and move up due to buoyancy and come down because of gravity. The point absorbers are designed to move along the waves to make the device efficient. These devices face excessive stress during the rough weather on account of the extreme motion of waves and cause the total device failure. The present study shows that using a non-buoyant body for conventional point absorber principle is much efficient and safer than any other device proposed till today. A small scale wave energy converter with non-buoyant body was designed, fabricated and tested in small scale wave maker. An electrical generator was coupled with the device to generate electrical energy from harnessed waves. The generator was electrically loaded and the generated power was measured. It was found from the experiments that the proposed device showed a significant improvement in electricity generation and safety during extreme conditions. In addition to the electricity generation, the characteristics of the device were also studied by using various wave and device parameters.

关键词： ocean wave energy     point absorbers     heaving body     non-floating object     heave response ratio     electrical energy generation    

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Power sources and electrical recharging strategies for implantable medical devices

WEI Xiaojuan, LIU Jing

《能源前沿（英文）》 2008年 第2卷 第1期   页码 1-13 doi: 10.1007/s11708-008-0016-3

摘要： Implantable medical devices (IMDs) are critically requested for the survival of patients subject to certain serious diseases such as bradycardia, fibrillation, diabetes, and disability, etc. Appropriate working of an active implantable medical device (IMD) heavily relies on the continuous supply of electricity. In this sense, long-term powering and recharging of an IMD via a highly safe, efficient and convenient way is, therefore, extremely important in clinics. Several conventional batteries, such as lithium cell, nuclear cell and bio-fuel cell, etc., have been developed to power IMDs. Meanwhile, the recharge of IMD from outside of the human body is also under investigation. In this paper, some of the most typical IMD batteries are reviewed. Their advantages and disadvantages are compared. In addition, several emerging innovations to recharge or directly drive the implanted batteries, including electromagnetic energy transmission, piezoelectric power generation, thermoelectric devices, ultrasonic power motors, radio frequency recharging and optical recharging methods, etc., are also discussed. Some fundamental and practical issues thus involved are summarized, and future prospects in this area are made.

关键词： generation     bio-fuel     ultrasonic     piezoelectric     conventional    

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Engineering Fronts in fields of Energy and Electrical Science and Technologies in the report of

《能源前沿（英文）》 2023年 第17卷 第1期   页码 5-8 doi: 10.1007/s11708-023-0868-6

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Combination of steam-enhanced extraction and electrical resistance heating for efficient remediationof perchloroethylene-contaminated soil: Coupling merits and energy consumption

《环境科学与工程前沿（英文）》 2022年 第16卷 第11期 doi: 10.1007/s11783-022-1582-z

摘要：

● Coupling merits of SEE and ERH were explored by a laboratory-scale device.

关键词： Steam-enhanced extraction     Electrical resistance heating     Dense nonaqueous phase liquid     Soil remediation     Energy consumption    

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Development of an experimental platform for research in energy and electrical machine control

Ali HMIDET, Rachid DHIFAOUI, Driss SAIDANI, Othman HASNAOUI,

《能源前沿（英文）》 2010年 第4卷 第3期   页码 366-375 doi: 10.1007/s11708-010-0106-x

摘要： This paper presents the development of a test bench dedicated for electrical machines and energy control, as realized by the research team of the Power Systems and Electrical Machines Laboratory (RME) of the National Institute of Applied Sciences and Technology (INSAT) in Tunisia. The principal components of the proposed test bench are explained, and the respective characteristics are given. This paper focuses on mounting low-cost sensors and developing reliable scientific results. The relevant obtained results in photovoltaic (PV) and wind energy fields, power measurement and control, as well as alternating current (AC) machine drives are likewise presented. These are supported by two signal processing controller boards based on Technosoft MCK240 and dSPACE DS1104 kits. In the wind energy field, some results relative to Self Excited Induction Generator dedicated to supplying isolated sites are discussed; in addition, water pumping is discussed for PV energy. In the AC drives area, the results of a closed loop control are presented using a developed direct voltage control (DVC) scheme implemented on dSPACE DS1104. Maps and interesting details of some realized sensors are also presented.

关键词： test bench     induction motor     solar energy     wind energy     AC/DC/AC converter     sensors and power measurements    

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Transition towards carbon-neutral electrical systems for China: Challenges and perspectives

《工程管理前沿（英文）》 2022年 第9卷 第3期   页码 504-508 doi: 10.1007/s42524-022-0220-6

关键词： carbon neutrality     power systems     electrification     renewable energy    

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A review on technologies with electricity generation potentials using liquified natural gas regasificationcold energy

《能源前沿（英文）》 2023年 第17卷 第3期   页码 332-379 doi: 10.1007/s11708-023-0863-y

摘要： In modern times, worldwide requirements to curb greenhouse gas emissions, and increment in energy demand due to the progress of humanity, have become a serious concern. In such scenarios, the effective and efficient utilization of the liquified natural gas (LNG) regasification cold energy (RCE), in the economically and environmentally viable methods, could present a great opportunity in tackling the core issues related to global warming across the world. In this paper, the technologies that are widely used to harness the LNG RCE for electrical power have been reviewed. The systems incorporating, the Rankine cycles, Stirling engines, Kalina cycles, Brayton cycles, Allam cycles, and fuel cells have been considered. Additionally, the economic and environmental studies apart from the thermal studies have also been reviewed. Moreover, the discussion regarding the systems with respect to the regassification pressure of the LNG has also been provided. The aim of this paper is to provide guidelines for the prospective researchers and policy makers in their decision making.

关键词： liquified natural gas     cold energy     power generation    

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A comprehensive energy solution for households employing a micro combined cooling, heating and powergeneration system

Huayi ZHANG, Can ZHANG, Fushuan WEN, Yan XU

《能源前沿（英文）》 2018年 第12卷 第4期   页码 582-590 doi: 10.1007/s11708-018-0592-9

摘要：

In recent years, micro combined cooling, heating and power generation (mCCHP) systems have attracted much attention in the energy demand side sector. The input energy of a mCCHP system is natural gas, while the outputs include heating, cooling and electricity energy. The mCCHP system is deemed as a possible solution for households with multiple energy demands. Given this background, a mCCHP based comprehensive energy solution for households is proposed in this paper. First, the mathematical model of a home energy hub (HEH) is presented to describe the inputs, outputs, conversion and consumption process of multiple energies in households. Then, electrical loads and thermal demands are classified and modeled in detail, and the coordination and complementation between electricity and natural gas are studied. Afterwards, the concept of thermal comfort is introduced and a robust optimization model for HEH is developed considering electricity price uncertainties. Finally, a household using a mCCHP as the energy conversion device is studied. The simulation results show that the comprehensive energy solution proposed in this work can realize multiple kinds of energy supplies for households with the minimized total energy cost.

关键词： energy hub     micro combined cooling     heating and power generation (mCCHP)     thermal comfort     robust optimization    

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A review of cryogenic power generation cycles with liquefied natural gas cold energy utilization

Feier XUE,Yu CHEN,Yonglin JU

《能源前沿（英文）》 2016年 第10卷 第3期   页码 363-374 doi: 10.1007/s11708-016-0397-7

摘要： Liquefied natural gas (LNG), an increasingly widely applied clean fuel, releases a large number of cold energy in its regasification process. In the present paper, the existing power generation cycles utilizing LNG cold energy are introduced and summarized. The direction of cycle improvement can be divided into the key factors affecting basic power generation cycles and the structural enhancement of cycles utilizing LNG cold energy. The former includes the effects of LNG-side parameters, working fluids, and inlet and outlet thermodynamic parameters of equipment, while the latter is based on Rankine cycle, Brayton cycle, Kalina cycle and their compound cycles. In the present paper, the diversities of cryogenic power generation cycles utilizing LNG cold energy are discussed and analyzed. It is pointed out that further researches should focus on the selection and component matching of organic mixed working fluids and the combination of process simulation and experimental investigation, etc.

关键词： liquefied natural gas (LNG) cold energy     power generation cycle     Rankine cycle     compound cycle    

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钠离子电池工程化——机遇与挑战 Review

赵丽娜, 张腾, 李巍, 李涛, 张隆, 张晓光, 汪志义

《工程（英文）》 2023年 第24卷 第5期   页码 172-183 doi: 10.1016/j.eng.2021.08.032

摘要：

当前，在应对全球能源枯竭与环境恶化之际，可持续且环境友好的可再生能源正迎来重要的发展机遇。以二次电池为代表的电能存储（EES）技术，可实现绿色新能源安全且经济有效的存储和转化，被视为可平抑可再生能源间歇性并实现稳定并网输入的最佳解决方案。钠离子电池（SIB），受益于钠资源的丰富
性及低成本，是下一代大规模电化学存储系统最具应用前景的选择之一。本文详细讨论了锂离子电池（LIB）和钠离子电池在不同应用场景下的主要区别，并描述了当前对钠离子电池的理解。通过比较锂离子电池、铅酸电池（LAB）和钠离子电池之间的技术发展情况，进一步揭示钠离子电池的优势。本文以基于钠离子电池技术所取得的商业化成就为文章亮点，重点介绍了五家钠离子电池企业和相应的钠离子电池产品，以及各自的钠离子电池化学与技术。最后，讨论了下一代钠离子电池商业化的前景与挑战。

关键词： 电化学储能     钠离子电池     商业化     下一代    

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Data-driven distribution network topology identification considering correlated generation power of distributedenergy resource

《能源前沿（英文）》 2022年 第16卷 第1期   页码 121-129 doi: 10.1007/s11708-021-0780-x

摘要： This paper proposes a data-driven topology identification method for distribution systems with distributed energy resources (DERs). First, a neural network is trained to depict the relationship between nodal power injections and voltage magnitude measurements, and then it is used to generate synthetic measurements under independent nodal power injections, thus eliminating the influence of correlated nodal power injections on topology identification. Second, a maximal information coefficient-based maximum spanning tree algorithm is developed to obtain the network topology by evaluating the dependence among the synthetic measurements. The proposed method is tested on different distribution networks and the simulation results are compared with those of other methods to validate the effectiveness of the proposed method.

关键词： power distribution network     data-driven     topology identification     distributed energy resource     maximal information coefficient    

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Emerging technologies to power next generation mobile electronic devices using solar energy

Dewei JIA , Yubo DUAN , Jing LIU ,

《能源前沿（英文）》 2009年 第3卷 第3期   页码 262-288 doi: 10.1007/s11708-009-0015-z

摘要： Mobile electronic devices such as MP3, mobile phones, and wearable or implanted medical devices have already or will soon become a necessity in peoples’ lives. However, the further development of these devices is restricted not only by the inconvenient charging process of the power module, but also by the soaring prices of fossil fuel and its downstream chain of electricity manipulation. In view of the huge amount of solar energy fueling the world biochemically and thermally, a carry-on electricity harvester embedded in portable devices is emerging as a most noteworthy research area and engineering practice for a cost efficient solution. Such a parasitic problem is intrinsic in the next generation portable devices. This paper is dedicated to presenting an overview of the photovoltaic strategy in the chain as a reference for researchers and practitioners committed to solving the problem.

关键词： photovoltaic conversion     energy harvesting     solar cell     maximum power point track algorithm     PV electricity storage     mobile/standalone PV application    

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A comprehensive review of renewable energy resources for electricity generation in Australia

Alireza HEIDARI, Ali ESMAEEL NEZHAD, Ahmad TAVAKOLI, Navid REZAEI, Foad H. GANDOMAN, Mohammad Reza MIVEH, Abdollah AHMADI, Majid MALEKPOUR

《能源前沿（英文）》 2020年 第14卷 第3期   页码 510-529 doi: 10.1007/s11708-020-0671-6

摘要： Recently, renewable energy resources and their impacts have sparked a heated debate to resolve the Australian energy crisis. There are many projects launched throughout the country to improve network security and reliability. This paper aims to review the current status of different renewable energy resources along with their impacts on society and the environment. Besides, it provides for the first time the statistics of the documents published in the field of renewable energy in Australia. The statistics include information such as the rate of papers published, possible journals for finding relative paper, types of documents published, top authors, and the most prevalent keywords in the field of renewable energy in Australia. It will focus on solar, wind, biomass, geothermal and hydropower technologies and will investigate the social and environmental impacts of these technologies.

关键词： renewable energy     hydro energy     wind power     photovoltaic     geothermal     bioenergy    

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Performance of a bi-layer solar steam generation system working at a high-temperature of top surface

Jinxin ZHONG, Congliang HUANG

《能源前沿（英文）》 2023年 第17卷 第1期   页码 141-148 doi: 10.1007/s11708-021-0725-4

摘要： Many efforts have been focused on enhancing the vapor generation in bi-layer solar steam generation systems for obtaining as much pure water as possible. However, the methods to enhance the vapor temperature is seldom studied although the high-temperature vapor has a wide use in medical sterilization and electricity generation. In this work, to probe the high-temperature vapor system, an improved macroscopic heat and mass transfer model was proposed. Then, using the finite element method to solve the model, the influences of some main factors on the evaporation efficiency and vapor temperature were discussed, including effects of the vapor transport conditions and the heat dissipation conditions. The results show that the high-temperature vapor could not be obtained by enhancing the heat-insulating property of the bi-layer systems but by applying the optimal porosity and proper absorbers. This paper is expected to provide some information for designing a bi-layered system to produce high-temperature vapor.

关键词： solar steam generation     solar energy     numerical method     porous material    

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Investigation on available wind energy at Tungku beach

M. G. YAZDANI, M. A. SALAM

《能源前沿（英文）》 2012年 第6卷 第3期   页码 275-279 doi: 10.1007/s11708-012-0194-x

摘要： In this paper, wind velocities and directions (sea and land) are recorded in different days and times. The data collected were compared with the weather data from the Brunei Darussalam Meteorological Service (BDMS) and the findings of other researchers and were found to be in good agreement. The potential of wind energy is predicted from the available data collected. The average generated power (forenoon and afternoon) is found to be 25 (mean) and 18 W (median), 101 (mean) and 73 W (median), 912 (mean) and 660 W (median), 10137 (mean) and 7331 W (median) for a rotor with a diameter of 2.5, 5, 15 and 50 m, respectively. The power density for wind farming is found to be 0.26 (mean) and 0.19 (median), 0.31 (mean) and 0.22 (median) for the rotor whose diameter is 2.5 and 50 m, respectively, while the average values are found to be 0.28 (mean) and 0.2 (median) for the rotor whose diameter is 5 and 15 m.

关键词： wind velocity     temperature     tower height     power density     Raleigh distribution     electrical power    

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标题 作者 时间 类型 操作

Laboratory experiment on using non-floating body to generate electrical energy from water waves

Arunachalam AMARKARTHIK, Srinivasan CHANDRASEKARAN, Karuppan SIVAKUMAR, Harender SINHMAR

期刊论文

Power sources and electrical recharging strategies for implantable medical devices

WEI Xiaojuan, LIU Jing

期刊论文

Engineering Fronts in fields of Energy and Electrical Science and Technologies in the report of

期刊论文

Combination of steam-enhanced extraction and electrical resistance heating for efficient remediationof perchloroethylene-contaminated soil: Coupling merits and energy consumption

期刊论文

Development of an experimental platform for research in energy and electrical machine control

Ali HMIDET, Rachid DHIFAOUI, Driss SAIDANI, Othman HASNAOUI,

期刊论文

Transition towards carbon-neutral electrical systems for China: Challenges and perspectives

期刊论文

A review on technologies with electricity generation potentials using liquified natural gas regasificationcold energy

期刊论文

A comprehensive energy solution for households employing a micro combined cooling, heating and powergeneration system

Huayi ZHANG, Can ZHANG, Fushuan WEN, Yan XU

期刊论文

A review of cryogenic power generation cycles with liquefied natural gas cold energy utilization

Feier XUE,Yu CHEN,Yonglin JU

期刊论文

钠离子电池工程化——机遇与挑战

赵丽娜, 张腾, 李巍, 李涛, 张隆, 张晓光, 汪志义

期刊论文

Data-driven distribution network topology identification considering correlated generation power of distributedenergy resource

期刊论文

Emerging technologies to power next generation mobile electronic devices using solar energy

Dewei JIA , Yubo DUAN , Jing LIU ,

期刊论文

A comprehensive review of renewable energy resources for electricity generation in Australia

Alireza HEIDARI, Ali ESMAEEL NEZHAD, Ahmad TAVAKOLI, Navid REZAEI, Foad H. GANDOMAN, Mohammad Reza MIVEH, Abdollah AHMADI, Majid MALEKPOUR

期刊论文

Performance of a bi-layer solar steam generation system working at a high-temperature of top surface

Jinxin ZHONG, Congliang HUANG

期刊论文

Investigation on available wind energy at Tungku beach

M. G. YAZDANI, M. A. SALAM

期刊论文