Processing method and device for grid-side converter device of multi-current system electric locomotive
A technology for electric locomotives and converter devices, which is applied to the traction of AC induction motors, output power conversion devices, motors, etc., can solve the problems of high manufacturing difficulty, large volume and weight of transformers, and high manufacturing costs, and can improve the grid side. Effects of converters and reliability
Active Publication Date: 2021-06-01
贾晶艳
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[0004] The main purpose of this application is to provide a processing method and device for a grid-side converter device of a multi-stream electric locomotive, so as to solve the large volume and weight of the transformer required by the grid-side converter device of a multi-stream electric locomotive in the related art , high manufacturing difficulty and high manufacturing cost
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[0033]It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments. In this embodiment, the sub-module grouping scheme we choose for the 3kV DC power supply system is L=N / 2, M=2, and the sub-module grouping scheme we choose for the 1.5kV DC power supply system is P=N, Q=1 .
[0034] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embo...
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The application discloses a processing method and device for a grid-side converter device of a multi-current system electric locomotive. The method includes: determining the target power supply system of the multi-current system electric locomotive; under the target power supply system, connecting the input ends of the converter sub-modules using intermediate frequency electrical isolation in the grid-side converter device in a target manner; and connecting After the input ends of the sub-modules are connected in the target manner, they are connected to the power supply network and the ground respectively. Through this application, the problems of large volume and weight, high manufacturing difficulty and high manufacturing cost required by the grid-side converter device of multi-current electric locomotives in the related art are solved.
Description
technical field [0001] The present application relates to the technical field of multi-current electric locomotives, and in particular, relates to a processing method and device for a grid-side converter device of a multi-current electric locomotive. Background technique [0002] A multi-stream electric locomotive refers to an electric locomotive that can operate under two or more power supply systems. In order to adapt to the voltage and frequency of different power supply systems, and to easily meet the current harmonic and input impedance requirements of different power supply systems and different countries, the grid-side converter devices (including transformers, four-quadrant converters, grid Side filter circuit, intermediate DC link, secondary resonant circuit, etc.), the volume, weight, design and manufacturing difficulty and cost are very high. [0003] For the above problems, no effective solution has been proposed yet. Contents of the invention [0004] The ma...
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IPC IPC(8): B60M3/00B60M3/02
CPCB60M3/00B60M3/02H02M1/10H02M1/0074H02M1/007H02M7/797B60L9/00B60L9/30B60L2200/26B60L2210/20B60L2210/40B60L15/007Y02T10/64Y02T10/72
Inventor 曹智宇贾晶艳
Owner 贾晶艳