Investigation of High Frequency magnetohydrodynamic propulsion

高频磁流体动力推进研究

基本信息

批准号：
05650270
负责人：
HATANAKA Yoshihiro
金额：
$ 1.41万
依托单位：
TOKYO UNIVERSITY OF MERCANTILE MARINE
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05650270/
关键词：
Magnetohydrodynamic Propulsion High Frequency Inverter Soft Switching Static Induction Transistor Zero Current Switching ZCS Overlapping Commutation Electrolysis 海水通電

项目摘要

A high frequency magnetohydrodynamic propulsion (HF MHD) which overcomes the problems for electrolysis of sea water and electrolytic corrosion in the electrode was developed. In the first place, a magnetohydrodynamic propulsion unit (MHD Unit) which was composed from several ferrite cores and carbon electrode was produced. A zero current switching (ZCS) type HF inverter for the high frequency power supply was numerically analyzed from the view point of soft switching. The ZCS operation region in the mu (normalized frequency) and lambda (normalized load) plane was elucidated in connection with switching stress in the resonant operation of the switching devices. On the basis of the analysis, the HF MHD system was designed and effectively tested in the sea water tank. From the results, no problem of electrolysis of sea water and electrolytic corrosion occured with good propulsion condition. In the second place, a new type of MHD unit which had less leacage flux than the first MHD unit applied an silicon steel core was produced. Furthermore, an improved type full bridge ZCS HF inverter which had wide ZCS stable operation region was developed. Through the numerical anlysis, the HF power supply was applied for the new MHD system and tested. More high speed of sea water flow was obtained in comparison with the first MHD system. The new principle of HF MHD was supplemented with experimental results.

高频磁流失动力推进（HF MHD）克服了电极在电极中电解和电解腐蚀的问题。首先，产生了由几个铁氧体核心和碳电极组成的磁水动力推进单元（MHD单元）。从软开关的角度分析了高频电源的零电流开关（ZCS）类型HF逆变器。 MU中的ZCS操作区域（归一化频率）和LAMBDA（归一化负载）平面与开关设备共振操作中的切换应力有关。根据分析，HF MHD系统在海水罐中设计并有效测试。从结果来看，在良好的推进条件下，海水和电解腐蚀的电解没有问题。第二，产生了一种新型的MHD单元，该单元的飞速通量少于第一个MHD单元施加了硅钢芯。此外，开发了ZCS稳定操作区域的改进的全桥ZCS HF逆变器。通过数值厌氧，将HF电源用于新的MHD系统并进行了测试。与第一个MHD系统相比，获得了更高的海水流量。 HF MHD的新原理补充了实验结果。