电线电缆20摄氏度导体最大电阻测量检测的不确定度分析

本文主要分析了电线电缆的20摄氏度导体的最大电阻具体测量数学模型中的不确定度影响因素。在采取电流换向方法将一部分测量误差消除以后,通过数学统计的方法对测量过程之中重复测量所致不确定度的分量进行评估。同时通过仪器校准的证书之中信息与内插方法确定设备的不确定分量,再根据JJF1059对测量结果不确定度进行测量,并给出整体检测的报告。

自焙电极的电阻率对烧结的影响

介绍了通过自焙电极焙烧模型,运用并联线路的算法,推导出电极电阻热和电极糊焙烧电阻率之间的公式,讨论了电极焙烧过程电阻热的影响因素,为确定电极糊的生产提供了依据。

Dynamic Simulation of Novel Small Wind Turbine Generation System with SynRG

This paper describes a small wind turbine generation system with SynRG （synchronous reluctance generator）. SynRGs are robust and inexpensive. In addition, SynRG has no cogging torque. Hence, wind turbine generation system with SynRG can achieve smooth start at low wind velocity. The rotor design of proposed SynRG is multi flux barrier type. With FEA （finite element analysis） software, the characteristics of SynRG are brought out, and the performance of wind turbine generation system with SynRG including copper loss and iron loss is simulated by FEA coupled with the motion equation of the wind turbine generation system under the maximum power point tracking control. In this paper, the constant wind test and the quasi-natural wind test are conducted. In conclusion, the results of these simulations indicate that the wind turbine generation system with SynRG has good performance, especially in starting phenomena.