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Regenerative braking control method and device

A technology of regenerative braking and control device, applied in electric braking system, vehicle energy device, motor vehicle, etc., can solve the problem of low energy utilization rate, and achieve the effect of improving energy utilization rate, reducing weight and saving investment

Pending Publication Date: 2017-11-03
SHANGHAI ELECON INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present disclosure proposes a regenerative braking control method and device, which can solve the problem of low energy utilization during train braking

Method used

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  • Regenerative braking control method and device

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Experimental program
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Effect test

Embodiment 1

[0031] The power supply system of urban rail transit mainly includes main substation, medium voltage power supply network, traction substation and traction network system. Among them, the main substation can transform the 110KV high voltage in the urban power grid into a 35KV medium voltage power supply through a transformer; the medium voltage power supply network can distribute the 35KV medium voltage power supply of the main substation to each traction substation through the medium voltage feed-out power supply network; the traction substation can The 35KV medium voltage power supply is stepped down by a rectifier transformer, and then rectified by the rectifier to become a DC power supply for trains; the traction contact system can provide the train with power from the DC power supply from the traction substation through the catenary. According to IEC standards and my country's regulations, there are two types of rated voltages for the catenary of urban rail transit in my co...

Embodiment 2

[0054] Figure 4 An application scenario diagram of the regenerative braking control device 100 according to an embodiment of the present disclosure is shown. The regenerative braking control device 100 according to an embodiment of the present disclosure can control the regenerative braking electric energy feedback device 200, such as figure 1 As shown, the regenerative braking electric energy feedback device 200 is connected to the catenary 400 via the first switch 300 and connected to the power grid 600 via the second switch 500. Among them, the regenerative braking control device 100 mainly includes: a voltage parameter detection module 110 and a control module 120.

[0055] The voltage parameter detection module 110 is connected to the catenary 400, and is used to collect the voltage of the catenary 400 and sample the voltage of the catenary 400 to obtain the voltage parameters of the catenary 400. The voltage parameters are used to indicate the catenary 400. Is the voltage ...

Embodiment 3

[0071] Figure 7 A schematic diagram showing a specific application scenario of the regenerative braking electric energy feedback system according to an embodiment of the present disclosure. Figure 5 Win the mark and figure 2 The same components have the same functions. For the sake of brevity, detailed descriptions of these components are omitted.

[0072] Such as Figure 7 As shown, the regenerative braking power feedback system may include a regenerative braking power feedback device 200 and a regenerative braking control device 100. Wherein, the regenerative braking electric energy feedback device 200 is connected to the catenary 400 via the first switch 300, and connected to the grid 600 via the second switch 500, and is used when the first switch 300 and the second switch 500 are both in the closed state. , Receiving the voltage of the catenary 400, transforming and transforming the voltage, and supplying the transformed and transformed voltage to the grid 600. The rege...

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Abstract

The invention relates to a regenerative braking control method and device for controlling a regenerative braking electric energy feedback device. The regenerative braking electric energy feedback device is connected with a contact network through a first switch and is connected with a power grid through a second switch. The method comprises the following steps: collecting voltage of the contact network, and sampling the voltage of the contact network, thus obtaining a voltage parameter of the contact network, wherein the voltage parameter is used for expressing whether the voltage of the contact network is larger than a set value; and when the voltage parameter is larger than the set value, controlling the first switch and the second switch to be closed to enable the contact network to be connected with the power grid through the regenerative braking electric energy feedback device. According to the regenerative braking control method and the regenerative braking control device which are disclosed by the invention, in case that the voltage of the contact network is relatively high, electric energy of the contact network can be fed back to the power grid through the regenerative braking electric energy feedback device, so that a resistance braking part is eliminated, and the investment is saved; and the weight of a train is reduced, and the problem of low energy utilization rate in a train braking process is solved.

Description

Technical field [0001] The present disclosure relates to the field of urban rail transit, in particular to a regenerative braking control method and device. Background technique [0002] In urban rail transit, when the train adopts regenerative braking, the kinetic energy of train operation can be converted into electric energy, and fed back to the catenary for use by adjacent trains, thereby saving energy. When the electric energy fed back to the catenary is too much, the voltage of the catenary will be too high, which will affect the normal operation of power station equipment and trains. [0003] At present, in order to maintain the voltage stability of the catenary, when the voltage of the catenary is higher than a set value (for example, 1.2 times the rated voltage), the train stops regenerative braking, starts resistive braking, and converts electrical energy into heat. However, the thermal energy consumed on the resistors not only forms thermal pollution, causes the surroun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L7/10B61D43/00H02J3/18B60M3/06
CPCH02J3/18B61D43/00B60L7/10B60M3/06B60L2200/26Y02E40/30Y02T10/72Y02T30/00
Inventor 石兆磊岳威孙经伟
Owner SHANGHAI ELECON INTELLIGENT TECH CO LTD