期刊
ELECTRONICS
卷 11, 期 18, 页码 -出版社
MDPI
DOI: 10.3390/electronics11182825
关键词
magnetic lead screw; wave power generation; finite element analysis; the thrust characteristics
资金
- National Natural Science Foundation of China [41576096, 41876096]
- Youth Fund of Jiangsu Natural Science Foundation [BK20201034]
- Jiangsu Distribution Network Intelligent Technology and Equipment Collaborative Innovation Center [XTCX202002]
- Natural Science Research Project of Jiangsu Higher Education Institutions [20KJB470028]
- Scientific Research Fund of Nanjing Institute of Technology [YKJ2019115]
In this paper, a magnetic lead screw (MLS) is introduced as a speed-increasing device in a wave energy converter (WEC) to improve the power density. The electromagnetic performances of several optimized MLSs with different topologies are investigated and evaluated using finite element analysis (FEA) and measurements. The results show that the optimized MLS significantly improves the power density and output power.
In order to improve the power density of the wave power generation system, a magnetic lead screw (MLS) is introduced in this paper as a speed-increasing device in a wave energy converter (WEC), which converts low-speed linear wave motion to high-speed rotational motion. Then, several types of MLSs with different topologies, which were optimized, are described. Finite element analysis (FEA) was used to investigate and evaluate their electromagnetic performances, such as the thrust force, torque, air gap magnetic density, etc. The optimized MLS prototype was manufactured, and the measurements verify the FEA results. Finally, a magnetic lead screw hybrid generator (MLSHG) for application to the WEC is proposed. This MLS significantly improved the power density under different wave conditions. When the moving speed v = 0.15 m/s, the output power of the MLSHG and outer-PM linear tubular generator were 923 W and 87 W, respectively, when the load resistance was 5 Omega. The output power of the MLSHG was more than 10 times compared to that of the outer-PM linear tubular generator in a fair comparison. Here, it is shown that the power density and output power of were MLSHG increased greatly.
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