【作者】 范航宇；

【导师】 邱阿瑞；

【作者基本信息】 清华大学 ， 电气工程， 2005， 硕士

【摘要】 随着人类对能源需求的与日俱增,能源危机即日可待,新能源的研究、开发和利用势在必行。海洋能是一种取之不尽用之不竭的无污染可再生能源,地球上海洋波浪蕴藏的电能可达5000GW。我国是海洋大国,可利用的波浪能极为丰富,本课题为国家自然科学基金资助项目,研究一种新型的漂浮式波浪发电系统,可向海上航标灯、沿海居民、海岛居民或守卫海岛的解放军战士提供电力,待技术成熟后,还可以实现大规模并网发电,因此具有重要的理论和实际意义。随着新型永磁材料的诞生,永磁电机的性能有了很大的提高。本课题将永磁电机应用于波浪发电领域,采用直立的直线往复运动的永磁体振子作为发电机励磁,可以直接与波浪的起伏运动特点相吻合,简化了波浪能的转化过程,永磁直线电机是革新传统波浪发电波能转换装置的良好选择。论文首先介绍了波浪发电的历史和发展现状,以及研发漂浮式波浪发电装置的意义,然后论述了稀土永磁电机设计的一般方法。ANSYS软件是采用有限元法对电机电磁场进行数值计算和分析的有力工具,论文重点阐述了应用ANSYS软件对新型双边扁平式永磁直线波浪发电机进行设计的步骤,给出了求解电机感应电动势和电感等参数的方法,并自行设计了样机。对样机的实验结果表明,其参数和主要性能均与理论计算结果相吻合,论文给出的设计方法是合理、正确的。采用6台样机及1个六面体支架,构成了一个漂浮式波浪发电系统,论文建立了系统的动力学仿真模型,并根据我国沿海地区的海浪特征,对该系统的输出电势进行了仿真,得出了系统的发电特性,通过后期实验验证,仿真结果比较准确。最后,在对系统仿真的基础上,论文给出了该系统的电能后处理方案,通过逻辑控制电路,自动实现系统各发电单元之间的串、并联切换,完成电能的存储。更多还原

【Abstract】 With the increasing energy requirements of human being, the energycrisis is getting more and more serious. It is imperative to do researches ondeveloping and harnessing new energy resources. As is known, the ocean waveenergy is a kind of clean and renewable energy resource. It is estimated thatthe oceans on the earth contain over 5000GW electrical power. Since thestored wave energy resource is abundant in our country, developing a novelfloating type of wave energy device does great benefit to us. The device couldgenerate electrical power and supply the pharos, residents and PLA soldiersliving along the coast. As a national science fund object, this investigation hasa significant meaning.With the appearance of new permanent magnet materials, theperformance of permanent magnet machines has been greatly improved.Compared with the traditional rolling machine, the permanent magnetreciprocating generator makes the rotor act in a straight line, which perfectlymatches the characters of wave movements.This paper first introduces the history and state of the art of wave powergeneration systems and the importance of developing floating-type wavepower devices. Then it discusses the general method of designing a permanentmagnet reciprocating generator. Based on the brief introduction to theprinciple of Finite Element Method for calculating the electromagnetic field,the paper deals with applications of ANSYS in the generator design, givesapproaches to decide parameters and schemes out the sample machine. Thisdesign method is proved to be correct through the experimental results.The novel floating-type wave power device is built up by six samplegenerators. In terms of the statistical information of the ocean wave, the paperprovides a kinetic simulation of the system in real wave conditions andexpounds the output characters of it.According to the output voltage level of each generator unit, the paperdescribes an electrical power control strategy of the device, which is realizedby the logic chips and can automatically match the variable frequency andvoltage characters.更多还原