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A method for controlling medium-voltage loads of EMUs

A control method and technology for EMUs, which are applied to motor vehicles, electric vehicles, vehicle components, etc., can solve problems such as easy failure, complex management and load distribution, etc., to avoid peak overlap, prevent auxiliary overload failures, and make full use of. Effect

Active Publication Date: 2020-11-03
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

This solution requires a large number of medium-voltage contactors on the train, and the management and load distribution are very complicated and prone to failure

Method used

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  • A method for controlling medium-voltage loads of EMUs
  • A method for controlling medium-voltage loads of EMUs

Examples

Experimental program
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Effect test

Embodiment Construction

[0018] refer to figure 1 , the medium voltage load start control method is as follows:

[0019] 1) Each load on the medium-voltage bus judges whether it needs to be started according to the actual situation such as the current ambient temperature and vehicle speed, and sends a start request if it needs to be started. When any medium-voltage load has a start request, enter the medium-voltage load sequence start control process;

[0020] 2) According to the importance of the medium-voltage load, the load of the medium-voltage bus is divided into 1-X levels. Once a medium-voltage load has a start request, the importance level of the load is first judged to be N;

[0021] 3) Judging the current importance of the level N load, whether it is the highest level among all the current loads with start requests;

[0022] 4) If level N is not the current highest level, it will temporarily not respond to the start-up request of level N loads, and start the loads with higher importance pr...

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Abstract

The invention discloses a control method for medium voltage loads in a motor train unit. The control method is characterized by comprising the following steps: sending a starting request when any medium voltage load requires starting, and judging whether a starting request for one medium-voltage load is sent currently in real time after a medium voltage bus bar is established; ranking all medium voltage loads on the bus bar in the motor train unit according to importance degrees. The control method has the remarkable effects that the starting of the medium voltage loads is managed, peak values are prevented from being overlapped, meanwhile important loads are started firstly, unimportant loads are started secondly, and running of a vehicle is kept stable; by adopting the control method, the medium voltage loads are allocated reasonable, and a part of medium voltage loads are omitted when auxiliary capacity is insufficient, so that full utilization of the auxiliary capacity is ensured, and the auxiliary overload failure is avoided at the same time.

Description

technical field [0001] The invention belongs to the field of railway transportation, and in particular relates to a control method for a medium-voltage load of an EMU. Background technique [0002] In recent years, the development of high-speed railways is changing with each passing day. As a means of carrying people on high-speed railways, EMUs have become the first choice for people to travel. The auxiliary power supply system is an important system of the EMU, which is responsible for providing cooling for high-voltage traction components and providing power for passenger comfort loads such as passenger room air-conditioning systems, kitchens, and electric boilers. Once the auxiliary power supply system fails, it will inevitably cause vehicle delays and passenger complaints. Therefore, how to ensure the safe and reliable operation of EMUs and reasonably ensure the comfort of passengers has become an important issue that companies strive to solve and improve. [0003] The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L3/00H02J9/02
CPCB60L3/00B60L2200/26H02J9/02
Inventor 刘静丁勇
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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