永磁式海洋波动发电装置的设计

发布时间：2018-01-26 15:27

本文关键词： 海洋波动永磁振子瞬态仿真感应电动势能量采集电路　出处：《河北工业大学》2015年硕士论文　论文类型：学位论文

【摘要】：传统上对海洋发电的研究着重于海洋波浪发电站及大功率发电设备,本课题重点研究单元式供电系统,向海洋气象监测设备及搭载的传感器网络提供电能,以解决化学电池供电寿命短暂、维护成本高诸多条件限制问题。课题使用稀土永磁材料钕铁硼N38制作振子,根据线性波动理论,以电磁感应定律为基础,设计制作试验样机并进行测试研究。以海洋波动理论及法拉第电磁感应定律为基础,分析研制永磁式海洋波动发电装置,基于上述理论建立波动发电装置机电耦合模型,此模型较好地描述波动发电装置输入输出关系,同时也为模型设计仿真提供可靠的理论指导。利用有限元分析软件对波动发电装置进行静态磁场仿真分析,以确定永磁振子的模型结构参数,根据仿真结果优化感应线圈的结构,通过磁场瞬态分析影响装置波动发电装置输出感应电动势的若干个要素,分别为永磁振子振动幅值、振动频率、线圈匝数及间距、磁路结构等。研究传统型能量采集电路性能,仿真结果表明输出电压与功率很大程度依赖于负载,改进型能量采集电路加入了超级电容器储能模块与稳压电路模块、开关控制电路、补充回路,通过对MOS开关实现准确的开断控制,实现微功耗电源的有效管理。设计制作波动发电装置样机,并对样机的输出感应电动势进行测试,在振幅±50mm、周期T=2s、线圈匝数400匝时,感应电动势峰值电压可达7.857V,测试结果表明,与采用有限元分析软件模型计算得到的数据相差0.231V,证明之前感应电动势数学推导过程是正确的,同时也为永磁式海洋波动发电装置设计制作奠定科学的理论基础。
[Abstract]:Traditionally, the research of ocean power generation focuses on the ocean wave power station and high-power power generation equipment. This topic focuses on the research of unit power supply system to provide electricity to marine meteorological monitoring equipment and sensor network. In order to solve the problem of short power supply life and high maintenance cost of chemical battery, we use NdFeB N38, a rare earth permanent magnet material, to make oscillator. According to the theory of linear wave, the problem is based on the law of electromagnetic induction. Based on ocean wave theory and Faraday's law of electromagnetic induction, a permanent magnet marine wave generator is developed. Based on the above theory, the electromechanical coupling model of fluctuating generator is established, which can describe the input and output relationship of fluctuating generator. At the same time, it also provides reliable theoretical guidance for model design and simulation. The static magnetic field simulation analysis of fluctuating power generation device is carried out by using finite element analysis software to determine the model structure parameters of permanent magnet oscillator. According to the simulation results, the structure of induction coil is optimized, and some factors which affect the output of induction electromotive force by transient magnetic field analysis are respectively permanent magnet vibration amplitude and vibration frequency. The performance of the traditional energy acquisition circuit is studied. The simulation results show that the output voltage and power depend heavily on the load. The improved energy acquisition circuit includes supercapacitor energy storage module and voltage stabilizing circuit module, switch control circuit, supplementary circuit, through the MOS switch to achieve accurate switching control. To realize the effective management of the micro-power power supply, the prototype of the fluctuating power generating device is designed and fabricated, and the output induced EMF of the prototype is tested at the amplitude 卤50mm, the period T ~ (2) s, and the coil turn number 400 turns. The peak voltage of inductive electromotive force can reach 7.857V. the test results show that the difference is 0.231V with the data calculated by the finite element analysis software model. It is proved that the mathematical derivation process of induction electromotive force is correct, and it also lays a scientific theoretical foundation for the design and manufacture of permanent magnet marine wave generator.
【学位授予单位】：河北工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TM612

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