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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.

研制了一种高频磁流体动力推进器（HF MHD），克服了海水电解和电极电解腐蚀的问题。首先，研制了一种由多个铁氧体磁芯和碳电极组成的磁流体动力推进装置。从软开关的角度对一种零电流开关（ZCS）高频逆变电源进行了数值分析。在μ（归一化频率）和λ（归一化负载）平面中的ZCS操作区域与开关器件的谐振操作中的开关应力相关地被阐明。在分析的基础上，设计了高频磁流体系统，并在海水舱中进行了有效的测试。结果表明，在良好的推进条件下，不存在海水电解和电解腐蚀问题。第二，研制了一种新型磁流体发电机组，其漏磁通量比第一台采用硅钢片铁心的磁流体发电机组少。在此基础上，研制了一种改进型全桥ZCS高频逆变器，该逆变器具有较宽的ZCS稳定工作区。通过数值分析，将高频电源应用于新的磁流体动力学系统，并进行了试验。与第一个磁流体动力学系统相比，获得了更高的海水流速。用实验结果补充了高频磁流体的新原理。