变压器

The charge control method is: input the battery module and the rectifier transformer to one of the first and second plug base; and using the first voltage detector and the second voltage detector to judge the input voltage of the first and second plug base, so to relatively control the conducting state of the first switch, the second switch, the third switch and the fourth switch, and so to make the rectifier transformer charge the battery module through the control of charge current in the charger.

该充电控制方法，是将电池模块及整流变压器分别输入第一及第二插座其中之一；并由第一及第二电压侦测器判断第一插座及第二插座的输入电压，以相对控制第一开关、第二开关、第三开关及第四开关的导通状态，使整流变压器可经由充电器的充电电流控制对电池模块进行充电。

The characteristics of high burning point insulation oil and this oil-immersed transformer are introduced.

介绍了高燃点绝缘油的性能及其变压器的应用，展望了高燃点油变压器的前景。

The proposed method can reduce the capacity requirement of the serial coupling transformer, and increase the power density of the compensator system.

以涌浪抑制控制法虽可消除串联变压器之涌浪电流，同时亦会降低补偿器起始之暂态输出电压，然而若可有效抑制涌浪电流，得以额定容量较小之串联变压器，达到串联式电压骤降补偿器之设计要求，同时可减少补偿器之重量，降低成本。

The long-term unbalance of the three-phase direct-current electric resistance of the coal mine substation host transformer,has led to grave product of tap changer charcoal,insulation oil flash point reduces,threatens the safe operation.

煤矿变电所主变压器由于长期三相直流电阻不平衡，导致分接开关严重积炭，绝缘油闪点降低，危胁主变压器安全运行。

Meanwhile, unified mathematical model of non-symmetrical compensation is designed to balance NPS current caused by traction substation, which provides the theories leading for devising traction substation.

同时设计了平衡牵引变压器负序电流非对称补偿的统一数学模型，为设计牵引变压器的接线型式提供了理论指导。

Aiming to characteristic of 3-phase to 2-phase power supply based on balance transformer, a new current balance compensation method utilizing inverter is proposed, which is mainly used to compensate negative sequence current .

从而使平衡变压器两相侧的输出电流对称，消除平衡变压器三相侧产生负序电流的条件，达到三相电流对称的目的。

The coupling coefficient of transformer relates the transforming efficiency.

变压器的耦合系数决定着变压器传递效率。

Especially, it pointed out that the design of modern steel-making electric arc furnace short net should base on three-phase balance, delta connection should be implemented inside the transformer, the section of conductor should be selected according to the density of economy electric current and the number of connected points of short net should be reduced.

围绕现代电弧炉供电及工艺方面的改进，提出短网设计与改造要点，特别指出：现代炼钢电弧炉短网的设计要以三相平衡为主，变压器的二次出线三角形封口要在变压器内实施，短网导体截面要按经济电流密度选取，以及尽量减少短网导体联接处。

On the basis of comparing the feature of inrush current's grille curve with that of fault current, a novel transformer protection scheme is proposed, which is not affected by add-assist circulation current at delta side on Y/D connection transformer.

在比较励磁涌流与短路电流网格曲线各自特点的基础上，提出了一种新型变压器保护方案，该方案不受Y/D接线的变压器D侧环流助增作用的影响。

3The dissertation makes a deep analysis on the calculation of the equivalent instantaneous inductance of wye-connected transformer. It concludes that the looping current in the winding of delta side of transformer, which is hard to obtain from line current, severely influences the calculation result of equivalent instantaneous inductance. In that case, a new scheme of transformer differential protection is proposed.

深入分析了变压器 Y/Δ接线方式下等效瞬时电感的计算问题，针对Δ侧绕组环流对等效瞬时电感计算结果影响大，而又无法通过线电流计算得到的特点，提出一种变压器差动保护 TA 配置新方案。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。