traction current

Railway applications-Rolling stock-Combined testing-Part 2: chopper-fed direct current traction motors and their control.

铁路设施. 机车车辆.联合试验.第2部分: 斩波直流牵引电动机及其控制设备.

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DC-01 direct current locomotives of Shanghai Metro line one were imported from Germany. The driver locomotives were drove by direct current motors with the speed regulation method of chopper. TCUs ( Traction Control Unit) and choppers are the main controllers of the driver locomotives.

上海地铁一号线DC-01型直流机车系德国进口，其中动车采用直流电机驱动，利用斩波器进行调速，其主控器为TCU（牵引控制单元）和斩波器。

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Fiscal measures would therefore gain more traction than further QE in the current environment.

因此,在当前环境下,相对于进一步的定量宽松,财政措施会给经济提供更大动力.

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The Function and Calculation of the Resistance to Absorb Minor Current in Traction Rectifier

牵引整流器压仓电阻的作用及计算

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This paper analyzes and calculates the negative current and harmonics of the two-phase system of the impedance-matching balance transformer, discusses the influence of electrical traction on operation of the three-phase system.

本文对阻抗匹配平衡变压器两相系统的负序电流和谐波含量进行了分析计算，并讨论了牵引负荷变化对三相系统的影响。

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Through analyzing traction bus current, traction bus voltage before and after compensation, the relationship between three-phase current unbalance degree, traction current total harmonic distortion rate and compensation degree is presented.

并通过分析平衡牵引变压器补偿前后的牵引母线电流、牵引母线电压，得出三相电流不平衡度、牵引电流总谐波畸变率与补偿度之间的关系。

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Analysis of the transient process and protection of APF when traction network has over current

牵引网过电流时的有源滤波器暂态过程分析与保护

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Discussion on the Protection Mode of Direct Current Traction System with Positive Pole Set Earthed

直流牵引系统正极接地保护方式的探讨

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In analyzing the regenerative braking conditions of the negative sequence current, adopting the common negative sequence calculation method to the traction transformer negative sequence current general expression for a variety of wiring.

在分析再生制动工况下负序电流问题上，从负序的通用计算方法入手，得出计算适用于多种接线方式的牵引变压器负序电流通用表达式。

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The reasons why current protection is not necessary in rectifiers of current traction substation are described.

通过分析,阐述了直流牵引变电所内的整流器不必设置逆流保护的理由.

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