The Experts below are selected from a list of 57261 Experts worldwide ranked by ideXlab platform
Zhong Lin Wang - One of the best experts on this subject based on the ideXlab platform.
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a hybridized triboelectric electromagnetic water wave energy Harvester based on a magnetic sphere
ACS Nano, 2019Co-Authors: Zhong Lin Wang, Zhiyi Wu, Wenbo Ding, Yicheng Wang, Lei ZhangAbstract:Blue energy harvested from ocean waves is an important and promising renewable energy source for sustainable development of our society. Triboelectric nanogenerators (TENGs) and electromagnetic energy Harvesters (EMGs) both are considered promising approaches for harvesting blue energy. In this work, a hybridized triboelectric–electromagnetic water wave energy Harvester (WWEH) based on a magnetic sphere is presented. A freely rolling magnetic sphere senses the water motion to drive the friction object sliding on a solid surface for TENG back and forth. At the same time, two coils transform the motion of the magnetic sphere into electricity according to the electromagnetic induction effect. For harvesting the blue energy from any direction, the electrodes of the TENG are specified as the Tai Chi shape, the effective of which is analyzed and demonstrated. Based on a series of experimental comparisons, the two friction layers and the two coils are specified to be connected in parallel and in series, respecti...
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design guidelines of triboelectric nanogenerator for water wave energy Harvesters
Nanotechnology, 2017Co-Authors: Abdelsalam Ahmed, Islam Hassan, Khalid Youssef, Mohammad Hedaya, Taher Abu Yazid, Jean W. Zu, Tao Jiang, Zhong Lin WangAbstract:Ocean waves are one of the cleanest and most abundant energy sources on earth, and wave energy has the potential for future power generation. Triboelectric nanogenerator (TENG) technology has recently been proposed as a promising technology to harvest wave energy. In this paper, a theoretical study is performed on a duck-shaped TENG wave Harvester recently introduced in our work. To enhance the design of the duck-shaped TENG wave Harvester, the mechanical and electrical characteristics of the Harvester's overall structure, as well as its inner configuration, are analyzed, respectively, under different wave conditions, to optimize parameters such as duck radius and mass. Furthermore, a comprehensive hybrid 3D model is introduced to quantify the performance of the TENG wave Harvester. Finally, the influence of different TENG parameters is validated by comparing the performance of several existing TENG wave Harvesters. This study can be applied as a guideline for enhancing the performance of TENG wave energy Harvesters.
Abdelsalam Ahmed - One of the best experts on this subject based on the ideXlab platform.
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design guidelines of triboelectric nanogenerator for water wave energy Harvesters
Nanotechnology, 2017Co-Authors: Abdelsalam Ahmed, Islam Hassan, Khalid Youssef, Mohammad Hedaya, Taher Abu Yazid, Jean W. Zu, Tao Jiang, Zhong Lin WangAbstract:Ocean waves are one of the cleanest and most abundant energy sources on earth, and wave energy has the potential for future power generation. Triboelectric nanogenerator (TENG) technology has recently been proposed as a promising technology to harvest wave energy. In this paper, a theoretical study is performed on a duck-shaped TENG wave Harvester recently introduced in our work. To enhance the design of the duck-shaped TENG wave Harvester, the mechanical and electrical characteristics of the Harvester's overall structure, as well as its inner configuration, are analyzed, respectively, under different wave conditions, to optimize parameters such as duck radius and mass. Furthermore, a comprehensive hybrid 3D model is introduced to quantify the performance of the TENG wave Harvester. Finally, the influence of different TENG parameters is validated by comparing the performance of several existing TENG wave Harvesters. This study can be applied as a guideline for enhancing the performance of TENG wave energy Harvesters.
Zhiyi Wu - One of the best experts on this subject based on the ideXlab platform.
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a hybridized triboelectric electromagnetic water wave energy Harvester based on a magnetic sphere
ACS Nano, 2019Co-Authors: Zhong Lin Wang, Zhiyi Wu, Wenbo Ding, Yicheng Wang, Lei ZhangAbstract:Blue energy harvested from ocean waves is an important and promising renewable energy source for sustainable development of our society. Triboelectric nanogenerators (TENGs) and electromagnetic energy Harvesters (EMGs) both are considered promising approaches for harvesting blue energy. In this work, a hybridized triboelectric–electromagnetic water wave energy Harvester (WWEH) based on a magnetic sphere is presented. A freely rolling magnetic sphere senses the water motion to drive the friction object sliding on a solid surface for TENG back and forth. At the same time, two coils transform the motion of the magnetic sphere into electricity according to the electromagnetic induction effect. For harvesting the blue energy from any direction, the electrodes of the TENG are specified as the Tai Chi shape, the effective of which is analyzed and demonstrated. Based on a series of experimental comparisons, the two friction layers and the two coils are specified to be connected in parallel and in series, respecti...
Xu Wang - One of the best experts on this subject based on the ideXlab platform.
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Comparison of electromagnetic and piezoelectric vibration energy Harvesters with different interface circuits
Mechanical Systems and Signal Processing, 2016Co-Authors: Xu Wang, Xingyu Liang, Haiping Du, Nong Zhang, Ma QianAbstract:A frequency response analysis has been conducted for a single degree of freedom vibration energy Harvester connected to four different interface circuits. The performance and characteristics of both electromagnetic and piezoelectric Harvesters have been analysed and compared. The main research outcome is the disclosure of similarity and duality of the electromagnetic and piezoelectric Harvesters with different interface circuits. The contribution of this paper is to provide a new method to identify a vibration energy Harvester with the best interface circuit and the most stable performance.
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A multi-degree of freedom piezoelectric vibration energy Harvester with piezoelectric elements inserted between two nearby oscillators
Mechanical Systems and Signal Processing, 2016Co-Authors: Han Xiao, Xu Wang, Sabu JohnAbstract:A novel piezoelectric vibration energy harvesting system is proposed whose harvesting performance could be significantly enhanced by introducing one or multiple additional piezoelectric elements placed between every two nearby oscillators. The proposed two degree-of-freedom piezoelectric vibration Harvester system is expected to extract 9.78 times more electrical energy than a conventional two degrees of freedom Harvester system with only one piezoelectric element inserted close to the base. A parameter study of a multiple degree-of-freedom piezoelectric vibration energy Harvester system has been conducted to provide a guideline for tuning its harvesting bandwidth and optimizing its design. Based on the analysis method of the two degrees of freedom piezoelectric vibration Harvester system, a generalised MDOF piezoelectric vibration energy Harvester with multiple pieces of piezoelectric elements inserted between every two nearby oscillators is studied. The harvested power values of the piezoelectric vibration energy Harvesters of 1 to 5 degree-of-freedom have been compared while the total mass and the mass ratio of the oscillators are kept as constants. It is found that the greater numbers of degree-of-freedom of a PVEH with the more additional piezoelectric elements inserted between every two nearby oscillators would enable that system to harvest more energy. The first mode resonant frequency will be shifted to a low-frequency range when the numbers of degree-of-freedom increase.
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Similarity and duality of electromagnetic and piezoelectric vibration energy Harvesters
Mechanical Systems and Signal Processing, 2015Co-Authors: Xu Wang, S Watkins, Xingyu Liang, Sabu John, Han Xiao, Xinghuo Yu, Haiqiao WeiAbstract:A frequency analysis has been conducted to study vibration energy harvesting performance and characteristics of a single degree of freedom vibration energy Harvester connected to a single load resistor based on the Laplace transfer method and physical models of a voltage source. The performance and characteristics of electromagnetic and piezoelectric Harvesters have been analysed and compared. The main research outcome is the disclosure of similarity and duality of electromagnetic and piezoelectric Harvesters for both the energy harvesting efficiency and the normalised resonant harvested power using only two dimensionless characteristic parameters: the normalised resistance and the normalised force factor. The dimensionless resonant harvested power and energy harvesting efficiency analysis allows for a parameter study and optimization of the ambient vibration energy Harvesters from macro-to nano-scales and for evaluation of the vibration energy Harvester performance regardless of the size and type.
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A study of electromagnetic vibration energy Harvesters with different interface circuits
Mechanical Systems and Signal Processing, 2015Co-Authors: Xu Wang, Xingyu Liang, Haiqiao WeiAbstract:A dimensionless analysis of piezoelectric vibration energy Harvester was conducted in the previous work where the harvested power and energy harvesting efficiency were normalised and determined from two non-dimensional variables of resistance and force factor. This paper has developed a dimensionless analysis of an electromagnetic vibration energy Harvester where the harvested power and energy harvesting efficiency are normalised and determined from two similar non-dimensional variables of resistance and equivalent force factor. The harvested power and efficiency are compared for the electromagnetic Harvester with different interface circuits. The aim is to disclose some similarity and limitations of the piezoelectric and electromagnetic Harvesters in a dimensionless scale.
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dimensionless optimization of piezoelectric vibration energy Harvesters with different interface circuits
Smart Materials and Structures, 2013Co-Authors: Xu WangAbstract:Conversion of mechanical vibration energy into electric energy could provide reliable and efficient energy utilization. Both the harvested resonant power and the energy efficiency have been studied based on a single degree of freedom weak electromechanical coupling piezoelectric vibration energy Harvester and normalized in a dimensionless form. Performance optimizations have been conducted for the energy Harvester connected with different interface circuits in terms of normalized harvested resonant power and resonant energy harvesting efficiency to identify both qualitatively and quantitatively the best energy extraction and storage interface circuit. Both the dimensionless harvested resonant power and the resonant energy harvesting efficiency formulae have been normalized to contain only two normalized variables of resistance and force factor regardless of the size and excitation magnitude of the energy Harvesters.
Islam Hassan - One of the best experts on this subject based on the ideXlab platform.
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design guidelines of triboelectric nanogenerator for water wave energy Harvesters
Nanotechnology, 2017Co-Authors: Abdelsalam Ahmed, Islam Hassan, Khalid Youssef, Mohammad Hedaya, Taher Abu Yazid, Jean W. Zu, Tao Jiang, Zhong Lin WangAbstract:Ocean waves are one of the cleanest and most abundant energy sources on earth, and wave energy has the potential for future power generation. Triboelectric nanogenerator (TENG) technology has recently been proposed as a promising technology to harvest wave energy. In this paper, a theoretical study is performed on a duck-shaped TENG wave Harvester recently introduced in our work. To enhance the design of the duck-shaped TENG wave Harvester, the mechanical and electrical characteristics of the Harvester's overall structure, as well as its inner configuration, are analyzed, respectively, under different wave conditions, to optimize parameters such as duck radius and mass. Furthermore, a comprehensive hybrid 3D model is introduced to quantify the performance of the TENG wave Harvester. Finally, the influence of different TENG parameters is validated by comparing the performance of several existing TENG wave Harvesters. This study can be applied as a guideline for enhancing the performance of TENG wave energy Harvesters.
