海洋流驱动的旋转磁场发电装置的理论及试验研究

发布时间：2018-03-23 22:02

本文选题：旋转磁场　切入点：能源补充　出处：《中国海洋大学》2014年硕士论文

【摘要】：随着我国不断加强对海洋环境监测的重视，对水下环境监测仪器设备的需求日益增加,而水下环境监测仪器设备大多工作时间长，功耗大，因此水下环境监测仪器的电能补充问题也成为了一个亟待解决的难题。需要一种持久的、环保的、低成本的新方式来取代传统的电池供电方式。海流能正是这样一种适用于给海洋环境监测设备供电的能源，基于上述情况，本文根据海流能的特点，设计出一种适用于潜标供电的发电机。进行理论分析和实验研究，对其进行结构参数分析，提高发电效率。旋转磁场海流发电装置的作用是将海流能转化为电能，它的工作原理是：海水以一定的速度流入装置，海流经过叶轮作用在叶片上，形成转矩，使叶轮转动。叶轮转动的同时带动叶轮表面的永磁体也随之转动，形成一个旋转的磁场。线圈与磁场间有相对运动，线圈切割磁感线，产生感应电动势，从而产生电流。装置采用内部贯通的结构，平衡进出口的压力，有效的解决了现有传统潮流能发电装置在水下压力过大的问题，减少了流速变化产生的影响。其次，该装置无传动系统，直接叶轮带动磁铁转动，，解决了传统水平轴潮流能发电装置传动系统柔性差、易损坏的缺点。通过对装置的理论分析与试验研究，可以得到结论该海流发电装置具有可行性。旋转磁场发电装置的输出功率与线圈的形状、大小、匝数等参数有关，发电装置的功率均随线圈匝数的增加先增大后减小；线圈形状对装置功率影响不大。当线圈的内径略小于永磁体的直径时，发电装置的输出功率最大。旋转磁场发电装置输出功率随水流速度的增大而增大。采用多排线圈与磁铁可以大幅提高发电装置的功率，当采用3排交错线圈与磁铁时，预计可使旋转磁场发电装置的功率提高到10mW级。
[Abstract]:With the increasing attention to marine environment monitoring in our country, the demand for underwater environment monitoring instruments and equipments is increasing day by day, while most underwater environment monitoring instruments and equipments work long hours and consume a lot of power. Therefore, the power supply problem of underwater environmental monitoring instruments has also become a difficult problem to be solved urgently. It needs a kind of lasting, environmentally friendly, A new low-cost way to replace the traditional battery power supply. Ocean current energy is such an energy source suitable for marine environmental monitoring equipment. Based on the above situation, according to the characteristics of ocean current energy, A kind of generator suitable for submersible power supply is designed. The theoretical analysis and experimental study are carried out, and the structural parameters are analyzed to improve the efficiency of generation. The function of the rotating magnetic field current generator is to convert the current energy into electric energy. The principle is that the sea water flows into the device at a certain speed, and the current acts on the blade through the impeller to form a torque. The impeller rotates. While the impeller rotates, the permanent magnet on the surface of the impeller also rotates, forming a rotating magnetic field. There is a relative motion between the coil and the magnetic field, and the coil cuts the magnetic inductance line to produce an inductive electromotive force. Thus, the current is generated. The device adopts an internal through structure, balances the inlet and outlet pressure, effectively solves the problem of excessive pressure of the existing traditional power generation devices under water, and reduces the influence of the change of the velocity of flow. The device has no transmission system and the direct impeller drives the magnet rotation, which solves the disadvantages of the traditional horizontal axis power generation device, which is poor flexibility and easy to damage. Through the theoretical analysis and experimental study of the device, it can be concluded that the current generator is feasible. The output power of the rotating magnetic field generator is related to the shape, size and turn number of the coil. The power of the generator increases first and then decreases with the increase of the number of coil turns, and the shape of the coil has little effect on the power of the device. When the inner diameter of the coil is slightly smaller than the diameter of the permanent magnet, The output power of the generator is maximum. The output power of the rotating magnetic field increases with the increase of the water flow velocity. The power of the generator can be greatly increased by using multi-row coils and magnets. When three rows of interlaced coils and magnets are used, It is expected that the power of the rotating magnetic field generator can be increased to 10mW level.
【学位授予单位】：中国海洋大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM612;P743.1

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