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A locomotive harmonic control device and system

A technology for harmonic control and locomotives, applied in harmonic reduction devices and AC networks to reduce harmonics/ripples, etc., can solve problems such as difficult device security, large capacity requirements for control devices, and difficulty in device selection , to improve the overall technical level, reduce volume and cost, and facilitate model selection

Active Publication Date: 2018-01-09
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This control method makes the voltage level of the ground harmonic control device higher, the capacity requirement for the control device is relatively large, the device selection is difficult, the safety of the device is not easy to guarantee, and the device is large

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  • A locomotive harmonic control device and system
  • A locomotive harmonic control device and system

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Embodiment Construction

[0031] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0032] figure 1 A structural diagram of the locomotive harmonic control system in this embodiment is shown.

[0033] Such as figure 1 As shown, the electric locomotive harmonic control system includes a traction power supply network 101 , a harmonic control device 102 and a locomotive load 103 . Wherein, the traction power supply network 101 is connected to the locomotive load 103 to provide power for the ...

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Abstract

The invention discloses an electric locomotive harmonic control device and system. The electric locomotive harmonic control device is installed on a locomotive, and comprises a step-down transformer and a passive filter circuit, wherein the primary side of the step-down transformer is connected to the input end of a traction transformer of the locomotive in parallel, the step-down transformer is used for carrying out voltage reduction on a power source provided by a traction power supply network and outputting the power source with the reduced voltage, the passive filter circuit is connected with the secondary side of the step-down transformer and used for filtering out higher harmonics generated by the locomotive, and then influence of the harmonics generated by the locomotive on the traction power supply network is reduced. The electric locomotive harmonic control device and system are simple, reliable, small in size, low in cost and high in safety, can effectively filter out the higher harmonics generated by the locomotive, and avoid damage caused by the higher harmonics to a traction power supply system and related devices.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to a locomotive harmonic control device and system. Background technique [0002] my country's railway transportation has been dominated by DC drive electric locomotives for a long time. Traditional DC electric locomotives use thyristor half-controlled bridge rectification, which has a low power factor and generates harmonics of 3rd, 5th, and 7th order. and other low harmonics. In recent years, with the rapid development of electrified railways and the maturity and wide application of AC drive technology, more and more new high-power AC drive electric locomotives have been put into use and gradually become the main force of railway transportation. [0003] The AC drive electric locomotive adopts PWM conversion technology, which has high power factor and small low-order harmonic current, but the current harmonic frequency band generated by it has a wide range, and a large n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/01
CPCY02E40/40
Inventor 何多昌罗文广张志学李华章志兵尚敬孙璐张定华陈涛刘华东
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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