Study on Thermally-Controlled Superconducting Device for Synchronous Rectifier of Line Frequency

工频同步整流热控超导装置的研究

基本信息

批准号：
09650325
负责人：
HOSHINO Tsutomu
金额：
$ 2.05万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09650325/
关键词：
Superconductivity Device Powerelectronics Switch Converter Synchronous rectification

项目摘要

Turn-off characteristics test of the superconducting power electronics device has been performed.Loss reduction of the trigger energy, which is obstacle for practical use, has been studied. As first step of device development, we tried to make the channel-gate junction as follows ; (1) We proposed the oxidization of the clad copper on the surface of NbTi. We tried to make the channel and the insulator layer. (2) We proposed a vapor deposition method. We tried to make the insulator layer on the NbTi channel and the gate layer. (3) We tried to glue NbTi foil and NiCr foil with Teflon sheet under certain heat. It forms the channel-insulator-gate pile structure. (4) We arranged the data such as basic characteristics of the device and rectification, and presented at the international conference etc. (5) We reported at international conference etc. on the trial to reduce the thermal resistance between the channel and the gate. (6) We revealed next application on moving flux type flux-pump un … More der rotating condition, and presented in Applied Superconductivity Conference and The Transactions of The Institute of Electrical Engineers of Japan.Obtained results reveal the possibility of "Thermally-Controlled Superconducting Switch " for rectifying device. The study on reducing turn-off energy is requied. There is no feasibility without improvement of switching efficiency. The method of thin insulation layer are established under this project. Performance test of the model switch has been proceeded, and the standard data for comparing improvement of heater efficiency. Furthermore, (1) This controlled rectifying device consists of the multi-layer of superconductor, insulator and heater. With each of thin layer, less thermal conductivity is preferred. To improve switching efficiency, establish the method to yield the insulator and heater layer with low thermal resistance. (2) Fabricate the device which operate under line frequency with minimum switching loss and a few milli-seconds recovery time. (3) Clear the relationships of switching characteristics and the structural (design) parameters with many R＆D devices. (4) Establish the circuit configuration of the synchronous rectifier circuit with the superconducting transformer. (5) Investigate the feasibility to apply the oxide superconductivity, through its characteristics evaluation. To fabricate switching device, we proposed Research Project Grant-in-Aid for Scientific Research (B)(2) "Study on Thermally-Controlled Superconducting Circuit and Device for Synchronous Rectifier of Line Frequency". Less

已经进行了超导电力电子设备的关闭特性测试。触发能量的降低是研究的，这是实际使用的障碍。作为设备开发的第一步，我们试图将通道对接交界处如下所示。（1）我们提出了在NBTI表面上的外壳铜的氧化。我们试图制作通道和绝缘体层。（2）我们提出了一种蒸气沉积法。我们试图在NBTI通道和栅极层上制作绝缘体层。（3）我们试图在某些热量下将NBTI箔和NICR箔粘合到特氟龙薄片上。它形成了通道 - 绝缘体对门桩结构。（4）我们安排了诸如设备的基本特征和纠正之类的数据，并在国际会议上进行了介绍。（5）我们在国际会议上进行了试验等报道，以减少渠道和门之间的热阻力。（6）我们透露了下一个有关移动通量型通量泵的应用程序，即更多的旋转条件，并在应用的超导性会议和日本电气工程师研究所的交易中介绍。揭示了“热控制超导开关的可能性”。需要有关减少关闭能量的研究。没有提高开关效率的情况下没有可行性。薄绝缘层的方法是在此项目下建立的。已经进行了模型开关的性能测试，以及比较加热器效率提高的标准数据。此外，（1）此受控的整流装置由超导体，绝缘体和加热器的多层组成。在每一个薄层中，首选的热导率较小。为了提高开关效率，请建立以低热阻力产生绝缘体和加热器层的方法。（2）制造以最小开关损失和几毫米恢复时间在线频率下运行的设备。（3）清除开关特性与许多研发设备的结构（设计）参数的关系。（4）建立具有超导变压器同步整流器电路的电路配置。（5）通过其特征评估来研究应用氧化物超导性的可行性。为了制造开关设备，我们提出了用于科学研究的研究项目授予（2）“对线频率同步整流器的热控制超导电路的研究和设备”。较少的