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电活性聚合物能量转换机理及实验研究
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作者 林桂娟 张欣波 王克胜 《上海交通大学学报》 EI CAS CSCD 北大核心 2016年第6期831-836,共6页
基于介电高弹聚合物理论构建电活性聚合物发电过程的数学模型,以揭示硅树脂电活性聚合物在电致大变形过程中的机电耦合规律及能量转换机理;根据能量收集的循环过程建立了恒电压、恒电荷、恒电场和恒电流条件下的能量收集模型及混合能量... 基于介电高弹聚合物理论构建电活性聚合物发电过程的数学模型,以揭示硅树脂电活性聚合物在电致大变形过程中的机电耦合规律及能量转换机理;根据能量收集的循环过程建立了恒电压、恒电荷、恒电场和恒电流条件下的能量收集模型及混合能量收集模型;针对机电能量的转换效率对比分析各种模型的性能;同时,搭建风能发电机实验装置并进行恒电荷条件下发电过程的能量收集实验.结果表明,恒电荷条件下的能量收集模型的能量转换效率最高. 展开更多
关键词 电活性聚合物 压电性能 能量收集模型 恒电荷
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Energy harvesting model of moving water inside a tubular system and its application of a stick-type compact triboelectric nanogenerator 被引量:12
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作者 Dongwhi Choi Sangmin Lee +3 位作者 Sang Min Park Handong Cho Woonbong Hwang Dong Sung Kim 《Nano Research》 SCIE EI CAS CSCD 2015年第8期2481-2491,共11页
As the first invention to efficiently harvest electricity from ambient mechanical energy by using contact electrification, the triboelectric nanogenerator has elicited worldwide attention because of its cost-effective... As the first invention to efficiently harvest electricity from ambient mechanical energy by using contact electrification, the triboelectric nanogenerator has elicited worldwide attention because of its cost-effectiveness and sustainability. This study exploits a superhydrophobic nanostructured aluminum tube to estimate electrical output for solid-water contact electrification inside a tubular system. The linearly proportional relationship of short-circuit current and open-circuit voltage to the detaching speed of water was determined by using a theoretical energy harvesting model and experimentation. A pioneering stick-type solid-water interacting triboelectric nanogenerator, called a SWING stick, was developed to harvest mechanical energy through solid-water contact electrification generated when the device is shaken by hand. The electrical output generated by various kinds of water from the environment was also measured to demonstrate the concept of the SWING stick as a compact triboelectric nanogenerator. Several SWING sticks were connected to show the feasibility of the device as a portable and compact source of direct power. The developed energy harvesting model and the SWING stick can provide a guideline for the design parameters to attain a desired electrical output; therefore, this study can significantly increase the applicability of a water-driven triboelectric nanogenerator. 展开更多
关键词 contact electrification triboelectric nanogenerator anodized aluminum xide superhydrophobic tubular system compact design
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A novel tuned heave plate system for heave motion suppression and energy harvesting on semi-submersible platforms 被引量:1
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作者 LIU Kun OU Jin Ping 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2016年第6期897-912,共16页
Deepwater offshore structures such as semi-submersible platforms suffer powerful ocean waves due to their location and site condition. The long distance away from the shore also brings many difficulties to energy supp... Deepwater offshore structures such as semi-submersible platforms suffer powerful ocean waves due to their location and site condition. The long distance away from the shore also brings many difficulties to energy supply for the platform operation. How to reduce the response of the platform and convert the wave energy into electrical power is a meaningful topic. In this paper, a tuned heave plate system(THP) is presented and designed to be employed on a semi-submersible platform for heave motion suppression and energy harvesting. This THP system is composed of spring supports, a power take-off system(PTO), and a heave plate. The PTO system is a permanent magnet linear generator(PMLG), which could directly convert the kinetic energy of the heave plate into electronic power. The stiffness of the spring supports is designed based on the principle of the tuned mass damper(TMD). The numerical model of the platform and the THP system is established according to the hydrodynamic analysis results of the platform. The model is tested and modified by scale model tests on the platform in the wave tank. A parameter study, including the size, tuned period, and damping ratio of the THP system, is conducted systematically based on the numerical model. The optimal parameters of the THP are selected due to the maximum heave motion reduction under severe wave conditions in South China Sea. The performance of the semi-submersible with and without the THP system under different wave conditions is analyzed. It is demonstrated that this novel tuned heave plate system could reduce the heave motion of the semi-submersible platform significantly and generate considerable power, which makes the THP system have a broad prospect for development. 展开更多
关键词 heave motion SEMI-SUBMERSIBLE wave energy harvesting wave energy converter TMD
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