损耗

According to the thermal process of transformer core and winding,this paper analyzes the compositions of core loss and load loss and their impacts on top oil temperature and hot-spot temperature of a transformer,and discusses the physical meanings of the parameters of the hot-spot temperature calculation equation recommended in the standard GB/T 15164-1994(loading guide for oil-immersed power transformers).

根据变压器铁心和绕组的发热过程，详细分析了变压器铁心损耗和负载损耗的组成以及其对变压器顶层油温和热点温度的影响，从实际物理意义的角度详细解释了GB/T 15164-1994《油浸式电力变压器负载导则》推荐的绕组热点温度计算方程各参数项的含义。

The energy dissipated is given in terms of the specific damping capacity of the structure, which gives a measurement of energy dissipation. A scheme based on the correspondence principle to obtain an estimation of the specific damping capacity was derived. It makes use of an intrinsic equation of the dynamic system, and about the cor...

根据动力系统的固有特征方程与材料弹性特性的关系，研究利用阻尼损耗因子定量描述在高频情况下，波在结构中传播时的能量耗散效应以及结构阻尼损耗因子的表示方法，并通过实验利用波的色散关系估计结构的动力粘弹性模量，理论分析和实验结果表明了这种方法的可行性。

The error of dielectric loss angle calculated by this way is reduced more than 18% than the former one.

仿真结果表明，该方法计算介质损耗角时的误差，较单独使用相关系数法时减少18%以上，克服了谐波及直流分量的影响，提高了相关系数法测量介质损耗角的精度。

Expressions are developed for the eddy current loss as a function of speed.

文章推导了频域涡流场和涡流电流密度公式，计算了磁阻力矩损耗功率和涡流损耗功率。

For the problem of rotor eddy current loss,a harmonic impedance device was used to reduce eddy current loss,which is an effective way to reduce the temperature.

针对转子涡流损耗的问题，采用了一种加感抗器减小谐波涡流损耗从而降低温度的有效方法。

Calculations and experiments are carried out on both magnetic flux density and eddy current loss of the non-magnetic steel plate and of the coil in this model.

对该模型低磁钢板及线圈的磁通密度和涡流损耗进行了试验与计算分析，得到了一些有价值的试验和分析结果，为磁场计算和三维涡流损耗分析方法提供了验证手段。

Different stator structures have an impact on the rotor eddy current loss and the rotor loss can be reduced by proper motor design.

定子结构对高速电机转子涡流损耗影响很大，合理地设计定子结构能够减小转子涡流损耗。

Fig.6 Percentage of the eddy current loss vs. frequency

磁密增大时涡流损耗在总损耗中所占的比率也是在增大。

This paper discusses a method, which can be used to approximately calculate the equivalent resistance and to approximately calculate the efficiency of different topologies. It could benefit a lot in designing DC-DC converters.

本文提出了一种近似计算等效电阻的方法，其原理是将变换器中各元件的损耗之和等效为输出电阻的损耗，可以简便计算变换器的效率，有助于选择合适的电路。

This paper uses field methods to calculate the winding loss and the modified Steinmetz experiential equation for core loss calculation.

本文所采用的铁心损耗公式是对正弦磁化波形下的Steinmetz经验公式进行修正和补充而得出的，该公式适用于任意磁化波形，并考虑了温度对铁心损耗的影响，从而提高了计算的精度。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。