线圈结构

The results show that the shape of meniscus is non-homogeneous because of the structure of the rectangular mold, and the height of meniscus will enlarge as increasing the power, and at the same time the meniscus fluctuate aggregately. The coil should be placed near the top of the mold and the initial free surface level should be placed in the middle of the coil in practice.

结果表明：由于矩形电磁软接触结晶器本身的结构限制，其弯月面沿周向上的分布具有不均匀性；随电源功率增大，弯月面高度增大，同时波动加剧；实际生产中线圈应尽量靠近结晶器口部位置安装，有利于提高弯月面高度和增强弯月面稳定性；浇注过程中，应该使浇注液面尽可能的控制在线圈中心偏上位置；当电源频率增大时，应该同时适当的提高电流来保证软接触效果。

The novel design method is the excellent solution for the simulation challenge that power electrical device and the magnetic path device are applied to the power system since it's the intuitionistic, effective and exactable. This method is also the innovation for the design and the application of the power electromagnetism device.

论文首次将SABER仿真软件引入到消弧线圈设计中，其中所采用的磁路模型、线圈模型不仅能描述消弧线圈的电气特征，还能反映消弧线圈铁心和线圈的空间几何结构、使用材料参数等物理特征。

Adopting this principle,it is possible to measure wide range AC current precisely and simply. relay protection ; Rogowski coil ; zero drift ; digital signal processing

Rogowski线圈具有结构简单、安装方便、检测灵敏度高、频带宽等优点，但其易受电磁干扰的影响，为此本文提出以Rogowski线圈为传感器结合数字信

This principle can measure large range AC current precisely. relay protection ; Rogowski coil ; zero drift ; digital integrator

Rogowski线圈具有结构简单、安装方便、检测灵敏度高、频带宽等优点，但其易受电磁干扰的影响，为此本文提出以Rogowski线圈为传感器结合数

This article expatiated on the structure and principle of coreless transformer in printed circuit board, introduced and analysed the Hurly_duffy's method to calculate the self and mutual inductance of coreless transformer in printed circuit board in which I found the fault, re-modified the current unit model, deduced a new formula used commonly, and offered testing process and circuit as well as mended the structure of coreless transformer which made the analysis easy.

本文阐述了无芯印制板变压器的基本结构和原理，介绍和分析了Hurly-duffy 的无芯印制板变压器自感和互感的计算方法，指出了它的不足，在纽曼公式的基础上，重新修正了电流元模型，将线圈看作是粗线圈，推导出普遍适用的计算公式，并给出了测试方法和测试电路。

According to the problems discussed above, a new means was presented to design Rogowski coils based on Printed Circuit Board. Two new Rogowski coil structures based on PCB were designed. The two Rogowski coils are easy to be manufactured without handwork and can be applied in mass production. The mutual inductance and self-inductance were deduced.

针对上述存在的问题，提出了采用印制电路板技术制作空芯线圈的新方法，设计了两种基于印制电路板的新结构，这两种线圈制作简单，不需手工绕制，易于批量生产，并推导了其自感系数和互感系数的表达式。

The design tool not only could provide various core specifications and its loss characteristic curves base on the core database, but also suit for PCB windings design of non-storage-energy type planar transformer with arbitrary number of winding and layer, and arbitrary connections. It is a good design tool for planar transformer with enough engineering precision, high performance and low cost.

软件不仅可以提供基于数据库的各种磁芯规格参数和各种损耗特性曲线，而且适用于分析、设计非储能式平面变压器的任意个线圈的任意连接结构和任意层数的PCB线圈，有足够高的工程精度，为设计高性能平面变压器提供了高性价比的设计工具。

Instead of using sandwiched or interleaved structures, the windings by the litz copper foils keep the inter-winding capacitance the minimum.

与线圈的交错结构比较，双绞铜箔并联结构线圈的变压器具有最小的原副边耦合电容。

It is composed of heater, sealing rubber rings, induction coil for heating, and high-power electronic device.

其结构包括加热器、橡胶密封圈、加热感应线圈、大功率电子元件，其中的加热器由非金属材料制作的基座、上盖、铁磁片、进水口、出水口组成，大功率电子元件是安装在进水口上，该大功率电子元件和进水口之间是互相绝缘的，基座的上、下端上有出水口、进水口，基座中间有凹槽，铁磁片放入该凹槽的底部，凹槽底部和进水口及出水口相连通，凹槽口上有上盖，基座和上盖之间有橡胶密封圈，基座的另一面上安放加热感应线圈，加热感应线圈和基座中的铁磁片相对应。

Therefore , the quality factor , the inductance in unit area and the current handling capability of the series parallel inductors were observably improved without extra technology .

多点并联结构有效地增加了等效金属层的厚度，串联结构增加了线圈之间的互感值，从而可以在不增加额外工艺成本的条件下显著提高平面电感的品质因数，单位面积电感值和电感线圈的电流承受能力。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。