一种新型的三相小型剩余电流动作保护器

一种新型的三相小型电子式剩余电流动作保护器（RCD）采用三相供电方式给内部的电路板供电。介绍了该RCD主要功能与特性,阐述设计过程中的一些技巧、注意事项以及主要技术参数和测试数据。三相小型电子式RCD在缺相情况下,保持止常工作,具有良好的电磁兼容性,可通过行业内较高标准要求的电磁兼容性试验：该RCD产品具有体积小、材料精简、造价低、整体性能优良,经济实用性良好等优点。     

柴达木盆地西南地区褶皱构造样式

依据构造剖面特征和变形历史,按成因可将柴达木盆地西南区构造分为:冲断褶皱、断展褶皱、滑脱褶皱、底辟(泥拱)和复合型褶皱5种主要构造类型。冲断褶皱构造以基底卷入强烈隆升的单向挤压不对称褶皱构造为主要特征,主要分布于昆北断隆带;断展褶皱构造以基底卷入单向挤压断层扩展不对称褶皱构造为主要特征,主要分布于尕斯—扎哈泉断褶带;滑脱褶皱构造以中浅层滑脱型近于对称褶皱构造为主要特征,主要分布于英雄岭滑脱断褶带和中央坳陷带以及尕斯—扎哈泉断褶带浅部;底辟构造(泥拱构造)以塑性泥岩上拱为主要特征,主要分布于中央坳陷带和英雄岭滑脱断褶带东部;复合褶皱构造由断展和滑脱型共同作用形成,主要分布于尕斯—扎哈泉断褶带、英雄岭滑脱断褶带的西段。      

Comparison of Additives in Anode:The Case of Graphene,MXene,CNTs Integration with Silicon Inside Carbon Nanofibers

Recently,graphene oxide(GO),MXene,carbon nanotubes(CNTs) have been used for compounding with other materials as anodes and cathodes to achieve excellent electrochemical properties for metal-ion batteries.However,few researches have focused on the differences between the three additives.Herein,silicon,as a typical anode,is selected to integrate with MXene,GO and CNTs in carbon nanofibers(CNFs) and form Si/MXene@CNFs,Si/GO@CNFs and Si/CNTs@CNFs,respectively.Together with the results,it can be realized that these CNFs with a significant improved performance compared with pure Si@CNFs show superiority in different aspects of electrochemical properties.Additionally,the reasons for the superiority are also discussed in this work.The addition of MXene can improve the cycle stability of the electrodes,thereby obtaining a high capacity retention rate,CNTs are favorable for the enhancement of rate performance,and the electrodes reversible capacity can be increased due to the addition of GO.Consequently,the studies on three additives may contribute to the rational design of silicon-based and other anode materials.     

三相电压型PWM整流器自抗扰控制

针对三相电压型PWM整流器本身的非线性特点,提出一种非线性控制策略.采用自抗扰控制技术设计了电压和电流控制器,具有鲁棒性强的特点.通过电压控制器对负载扰动进行补偿,消除了负载扰动带来的输出直流电压稳态跟踪误差.三相电压型PWM整流器的开关信号利用空间矢量脉宽调制方法生成.仿真结果表明,本文所提控制策略是有效的