Energy Harvesting and Systems最新文献_第8页

An improved intermittent power supply technique for electrostatic precipitators 一种改进的静电除尘器间歇供电技术

Energy Harvesting and Systems Pub Date : 2022-09-21 DOI: 10.1515/ehs-2022-0047

Rajkumar Ganesamoorthy, S. Srinivasan

{"title":"An improved intermittent power supply technique for electrostatic precipitators","authors":"Rajkumar Ganesamoorthy, S. Srinivasan","doi":"10.1515/ehs-2022-0047","DOIUrl":"https://doi.org/10.1515/ehs-2022-0047","url":null,"abstract":"Abstract A cost-effective power supply design proposed for electrostatic precipitators (ESP) is presented in this work. The cost minimization is done in terms of eliminating the power transformer and reducing power consumed by the ESP unit. Usually, transformers are used to boost the voltage level in conventional systems on its input side, which is replaced by a combination of a high-frequency converter along with a voltage multiplier in a modular arrangement. By interconnecting these modules, the suitable voltage is built-up easily. An intermittent pulse energized supply is developed by the proposed system to reduce back corona and to save energy consumption. The modular arrangement also increases the lifetime of converter switches, by reducing the switching stresses developed across them during its high-frequency operation and by reducing the Total Harmonic Distortion (THD). The complete system is designed and analyzed using MATLAB SIMULINK. The obtained results are better than the existing methods used for generating intermittent energization, the THD is reduced to 35.78% and the voltage stresses also reduced to 1800 V. And a module is experimented and found that it is capable of producing 3 kV.","PeriodicalId":36885,"journal":{"name":"Energy Harvesting and Systems","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90636273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

PZT and PVDF piezoelectric transducers’ design implications on their efficiency and energy harvesting potential PZT和PVDF压电换能器的设计对其效率和能量收集潜力的影响

Energy Harvesting and Systems Pub Date : 2022-09-21 DOI: 10.1515/ehs-2022-0087

Antiopi-Malvina Stamatellou

{"title":"PZT and PVDF piezoelectric transducers’ design implications on their efficiency and energy harvesting potential","authors":"Antiopi-Malvina Stamatellou","doi":"10.1515/ehs-2022-0087","DOIUrl":"https://doi.org/10.1515/ehs-2022-0087","url":null,"abstract":"Abstract Despite the intensive research carried out in the last two decades, the actual performance of piezoelectric energy harvesters needs significant improvement for widespread applicability. Custom designed experimental set-ups and methods can be applied for the evaluation of new piezoelectric energy harvesters or modified design versions of existing transducers, in terms of efficiency and specific power. In this context, two representative types of commercial cantilever piezoelectric transducers, made of PZT and PVDF material respectively, were tested in various combinations of aerodynamic and harmonic base excitation. A line type laser was used along with long exposure photography for the visualisation of the piezofilm’s mode shapes, tip deflection and the digitization of the elastic line at the oscillation extrema. The harvested power was measured at on-resonance conditions and studied relative to the excitation combinations and the mode shapes. Energy conversion efficiency, defined as the ratio of the electric-field energy accumulated by the supercapacitors, over the total elastic strain energy change of the material during the oscillations is measured and compared. Design improvements are proposed for both transducer types to extract and absorb higher amounts of energy and improve their bandwidth to match the available excitation source characteristics.","PeriodicalId":36885,"journal":{"name":"Energy Harvesting and Systems","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82646094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental investigation of soiling effects on the photovoltaic modules energy generation 污染对光伏组件发电影响的实验研究

Energy Harvesting and Systems Pub Date : 2022-09-16 DOI: 10.1515/ehs-2022-0037

Gufran Adnan Jendar, Layth Abed Hasnawi Al-Rubaye, Imad Saeed Abdulrahman, Q. Hassan

引用次数: 7

A comprehensive review on electric vehicles: charging and control techniques, electric vehicle-grid integration 电动汽车研究综述:充电与控制技术、电动汽车与电网集成

Energy Harvesting and Systems Pub Date : 2022-06-24 DOI: 10.1515/ehs-2021-0083

P. Femy, J. Jayakumar

{"title":"A comprehensive review on electric vehicles: charging and control techniques, electric vehicle-grid integration","authors":"P. Femy, J. Jayakumar","doi":"10.1515/ehs-2021-0083","DOIUrl":"https://doi.org/10.1515/ehs-2021-0083","url":null,"abstract":"Abstract Energy consumption in the field of transportation comes next to industrial consumption worldwide. If transportation is completely powered by renewable energy, the utilization of fossil fuels can be drastically reduced, which will result in a lesser amount of greenhouse gas emissions. Electric vehicles (EVs) can act as an alternative to make transportation pollution-free. Large-scale usage of EVs causes high electricity demand on the supply system. This problem can be overcome by utilizing renewable energy sources (RESs) for Electric Vehicle charging. Due to the unpredictability of RESs, coordinating EV charging with other loads and renewable generation is problematic. By using EVs as energy units, power fluctuations in the electric grid can be compensated. This paper presents a summary of recent research in the domain of integration of electric vehicles (EVs) to the smart grid. Electric vehicles-smart grid integrated systems face several issues related to communication, grid infrastructure and control in the future power system. Smart grid technologies are summarized in Section 2. The existing research articles in this area are classified into two based on the purpose: EVs integration into the electric grid and Vehicle to grid services. Finally, the research gaps and future scope of incorporating electric vehicles with renewable energy sources and the Smart grid are highlighted.","PeriodicalId":36885,"journal":{"name":"Energy Harvesting and Systems","volume":"27 1","pages":"1 - 14"},"PeriodicalIF":0.0,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88728389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance optimization of flywheel using experimental design approach 用实验设计方法优化飞轮性能

Energy Harvesting and Systems Pub Date : 2022-06-22 DOI: 10.1515/ehs-2022-0007

Abdelbaki Abdallah, S. Bendaoudi, M. Bounazef

引用次数: 0

Assessment and optimization of photovoltaic systems at the University Ibn Tofail according to the new law on renewable energy in Morocco using HOMER Pro 根据摩洛哥新的可再生能源法律，使用HOMER Pro对伊本托fail大学的光伏系统进行评估和优化

Energy Harvesting and Systems Pub Date : 2022-06-22 DOI: 10.1515/ehs-2022-0035

Chakib El Mokhi, Oumaima Choukai, H. Hachimi, Ahmed Ait Errouhi

{"title":"Assessment and optimization of photovoltaic systems at the University Ibn Tofail according to the new law on renewable energy in Morocco using HOMER Pro","authors":"Chakib El Mokhi, Oumaima Choukai, H. Hachimi, Ahmed Ait Errouhi","doi":"10.1515/ehs-2022-0035","DOIUrl":"https://doi.org/10.1515/ehs-2022-0035","url":null,"abstract":"Abstract The current study aims to investigate and optimize the photovoltaic systems currently in operation at the University of Ibn Tofail in Kenitra, Morocco. The University has started already since 2017 to integrate photovoltaic systems in the form of carports with the objective to reduce the invoices for electricity supplied from the utility grid by at least around 40%. Until then, the University avoided selling the energy surplus to the local electricity provider due to complicated bureaucratic regulations. However, due to the new law on renewable energy adopted by the Moroccan government in November 2021, it will be possible for private households and public service buildings to sell the entire excess of energy produced by renewable energy systems instead of only 20% of the surplus according to the previous law 13-09. For this purpose, this research project seeks to verify whether an expansion of the available photovoltaic installations and the sale of the energy surplus is worthwhile or not. This research work has been done with the optimization software HOMER Pro and presents the obtained optimized results and proposals of two new scenarios in comparison to already existing photovoltaic arrays.","PeriodicalId":36885,"journal":{"name":"Energy Harvesting and Systems","volume":"36 1","pages":"55 - 69"},"PeriodicalIF":0.0,"publicationDate":"2022-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88510422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Modelling, design and parametric analysis of a levitation based energy harvester 基于悬浮能量采集器的建模、设计和参数分析

Energy Harvesting and Systems Pub Date : 2022-06-21 DOI: 10.1515/ehs-2022-0034

Prajwal Kogodu Thirthappa, M. Krishnan

引用次数: 0

Dispatchable power supply from beam down solar point concentrator coupled to thermal energy storage and a Stirling engine 可调度的电力供应从束下太阳能点集中器耦合到热能储存和斯特林发动机

Energy Harvesting and Systems Pub Date : 2022-06-06 DOI: 10.1515/ehs-2021-0053

A. Boretti, Ayman al Maaitah

{"title":"Dispatchable power supply from beam down solar point concentrator coupled to thermal energy storage and a Stirling engine","authors":"A. Boretti, Ayman al Maaitah","doi":"10.1515/ehs-2021-0053","DOIUrl":"https://doi.org/10.1515/ehs-2021-0053","url":null,"abstract":"Abstract A high concentration high-temperature beam down solar point concentrator is proposed, coupled to thermal energy storage and a Stirling engine to deliver fully dispatchable electricity over 24 h. Full 24 h operation at nominal power is permitted during the month of maximum solar energy collection while in the month of minimum solar energy collection, the full power production is limited to 17.06 h. The monthly average capacity factors oscillate between 71 and 100%, with an average of 87.5%. Thanks to an electric heater for the heat storage fluid, the system can accept excess electricity from the grid to compensate for the loss of the solar energy collected every other month versus the solar energy collected during the best summer month, to operate at rated power 24 h a day in every day of the year. In this case, the capacity factor can reach 100% every month. By further increasing the size of the thermal energy storage and the power of the engine, the electric thermal energy storage capability of the system can be enhanced, increasing the amount of electricity otherwise wasted that could be collected from the grid to be then returned when needed.","PeriodicalId":36885,"journal":{"name":"Energy Harvesting and Systems","volume":"67 1","pages":"25 - 33"},"PeriodicalIF":0.0,"publicationDate":"2022-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85619958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Evaluation of parameters influencing the performance of photovoltaic-thermoelectric (PV-TE) hybrid system 影响光伏-热电(PV-TE)混合系统性能的参数评价

Energy Harvesting and Systems Pub Date : 2022-04-25 DOI: 10.1515/ehs-2022-0015

M. El Mliles, H. Amiry, Y. El kouari, A. Hajjaji

引用次数: 0

Multi-level energy efficient cooperative scheme for ring based clustering in wireless sensor network 无线传感器网络环聚类的多级节能协同方案

Energy Harvesting and Systems Pub Date : 2022-04-13 DOI: 10.1515/ehs-2021-0031

J. J. Sumesh, Maheswaran Chella Perumal

{"title":"Multi-level energy efficient cooperative scheme for ring based clustering in wireless sensor network","authors":"J. J. Sumesh, Maheswaran Chella Perumal","doi":"10.1515/ehs-2021-0031","DOIUrl":"https://doi.org/10.1515/ehs-2021-0031","url":null,"abstract":"Abstract Wireless Sensor Network (WSN) is composed of different sensors attached to the same wireless medium. Sensor node data is usually forwarded to the base station, where it has been stored, evaluated, and processed. Ring Routing, a new energy-efficient distributed routing protocol aimed at larger-scale WSN applications with mobile sink and motionless sensor nodes. The structure ring is quickly converted, and they are capable of switching positions with regular nodes in a simple and effective manner, thereby minimizing the hotspot problem. In the network system, the central node is considered, and ring nodes with a certain distance are established while creating a ring structure. Since the sink nodes are powered by batteries, they deplete their batteries quicker than the other nodes, which is attributable to the accumulation of data traffic into the sink. Furthermore, when the ring configuration is disrupted due to ring node expiration, data transfer becomes tedious and causes significant delay. As a ring node starts to exhaust, its neighbor takes over as the ring node, and this selection of the regular node as the ring node is done optimally based on Multiple-Fitness Parameters such as Four-level energy consumption (4En), Distance (distance between the ring node and the regular node Dist ring − reg and distance between network centers to regular node Δ D i s t C − r i n g ${Delta}Dis{t}_{C-ring}$ ) and delay S. Moreover, this optimal selection of the regular node to act as ring node will be carried out by a new hybrid algorithm referred to as Cuckoo Search Updated Sealion’s Attacking Technique (CSUSAT) that combines the standard crow search and sea lion optimization algorithm. At last, the supremacy of the presented approach is proved over other models.","PeriodicalId":36885,"journal":{"name":"Energy Harvesting and Systems","volume":"17 1","pages":"133 - 150"},"PeriodicalIF":0.0,"publicationDate":"2022-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81542695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0