浮子式永磁同步波浪发电系统分析与控制-电气工程专业论文.docxVIP

ABSTRACT The global energy crisis makes lots of countries in the world do the research of new energy methods and national sustainable energy development strategy. Ocean energy is an important renewable energy, it is estimated that the marine energy accounts for about 70% of the world’s total energy. Countries around the world are competing for marine resources. Our country is an ocean state so that we can abundantly take advantage of the wave energy. As a national science fund project, the paper studied a new float-type wave power system based on the analysis of the research of wave power technology at home and abroad. The system can generate electrical power and supply the pharos, residents, island military preparedness, and so on. And when the technology is mature, the large-scale grid-connected power generation can also be realized. So this investigation has an important theoretical and practical meaning. The float-type wave power generation device capture wave power by the float and transfer the energy through the mechanical transmission devices, so the wave energy can be finally converted into electrical energy by using the permanent magnet synchronous generator (PMSG) and its control system. The float-type wave power generation system is studied in this paper, and the work is mainly as follows: The principles, anchoring methods and control strategies of wave power generation systems are introduced with the development of wave power technology at home and abroad described. A new float-type wave power generation system is put forward with its wave energy converter fully studied. The analytical force analysis and calculation of the float based on Froude-krylov theory is carried out. And the force analysis is also simulated and verified by using MATLAB software. The low speed PMSG in the system is designed, and the electromagnetic design process is given. The numerical calculation and simulation verification of the PMSG is carried out using finite element analysi