变压器

A transformer supplying auxiliaries of a power station.

向电站的辅助设备供电的变压器。

A new ZVS-ZCS ARCPI (auxiliary resonant- commutated pole inverter) is proposed to solve the problems, such as extra loss from auxiliary circuit, variable commutation duration, and delicate reliability etc., which exist in other ARCPIs.

辅助谐振换流逆变器拓扑结构中存在着诸如由辅助换流回路损耗引起的转换效率低、由负荷电流变化引起的变辅助换流周期和稳定性差等问题，为此提出了一种基于变压器辅助换流的新型ZVS-ZCS逆变器。

Put forward using axial symmetry model to calculate zero-sequence impedance of power transformer. The results comparing with the testing value are correct.

提出使用准三维轴对称物理模型计算变压器的零序阻抗，并用实际模型和实验数据验证了计算结果，其结果是合理的。

We are a professional manufacturer of electronic energy saving lamps, transformer and ballast .

我们是一家专业生产电子节能灯、变压器、镇流器的工厂。

The factory has always been implementing the "strict management of a high quality products for enterprise customers trust" for quality, is now the Shanghai Huizhong, SAIC Yizheng Automobile Works, Shanghai ABB Transformer Co., Ltd., Shanghai Aerospace Automobile Electrical and Mechanical Co., Bando and Trade Co., Ltd. of qualified suppliers.

本厂始终贯彻执行"严格管理供优质产品创顾客信得过企业"为质量方针，现为上海汇众、上汽集团仪征汽车厂、上海ABB变压器有限公司、上海航天汽车机电股份有限公司、阪和贸易有限公司合格供应商。

In order to insure the stability of power grid, it is indispensable to be reinforced the monitor and diagnosis of the transformer insulation.

为保证电力系统的稳定，必须加强对电力变压器绝缘的监测和诊断。

Displays around the magnetic field will be easy to produce items, such as multimedia speakers, a variety of peripherals, such as used in transformers, the magnetic field will affect the direction of the electron beam deflection.

显示器的周围会出现易产生磁场的物品，如多媒体音箱、各种外设所用的变压器等，这些磁场都会影响电子束的偏转方向。

It also gives a useful and effective analysis method for bifilar transmission-line transformer. The calculated values are in good agreement with the metrical values.

由此，文中给出了一种分析双线传输线变压器的实用、有效的方法，且理论结果与实测结果具有较好的一致性。

The converter combines the advantages of the PWM technique and soft-switching technique, the PWM is effected all over the whole loads range, and soft-switching is effeted only in the switching transition period, the ZVS of leading-leg is achieved by using the energy stored in leakage inductor of the transformer and the output inductor, the ZCS of lagging-leg is achieved by using a blocking DC capacitor, the ZVS and ZCS are achieved for the whole load ranges (5A~250A).

控制电路采用相移控制方式，综合了PWM控制和软开关技术的优点，在大范围内实现PWM控制，而在功率器件换流期间实现软开关换流，其中超前桥臂利用变压器的漏感，实现了零电压开关，滞后桥臂利用隔直电容，实现了零电流开关，并且整个变换电路能在（5A~250A）的范围内实现软开关工作条件，满足弧焊电源负载变化大的特点。

Statistic data indicate that windings is most possible blooey. Wingdings fault occupied 60%-70% in the power transformer.

统计资料表明：在变压器各类故障中，绕组发生故障的机会最大，约占整个故障的60％-70％，在绕组各类故障中，最常见的就是绕组匝间短路(包括绕组层间短路、股间短路等等)，从广义上讲，绕组故障都可以归结于匝间短路。

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％。