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Hybrid rail transit braking energy feedback device and control method

A technology of braking energy feedback and rail transportation, which is applied in the direction of AC network load balancing, single-network parallel feeding arrangement, etc.

Pending Publication Date: 2020-07-07
LIVESINE ELECTRIC SHANGHAI CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the above energy feedback technology uses the direct return of electrical energy to the grid, so it will be limited by the train's operating schedule

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  • Hybrid rail transit braking energy feedback device and control method

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation methods and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0029] A hybrid rail transit braking energy feedback device, including an energy recovery device 1 for recovering electric energy during braking, the output end of the energy recovery device 1 is connected to a power grid 6 for powering rail transit vehicles, the device It also includes a first DC conversion circuit 2, a first inverter 3, a second DC conversion circuit 4 and an energy storage element 5, and the first DC conversion circuit 2 and the first inverter 3 are connected in series and arranged in the energy recovery device 1 and the grid 6, and the input end of the f...

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Abstract

The invention relates to a hybrid rail transit braking energy feedback device and a control method. The device comprises an energy recovery device used for recovering electric energy in the braking process. The output end of the energy recovery device is connected to a power grid used for supplying power to the rail transit vehicle. The device further comprises a first direct-current conversion circuit, a first inverter, a second direct-current conversion circuit and an energy storage element, wherein the first direct-current conversion circuit and the first inverter are connected in series and are arranged between the energy recovery device and the power grid; the input end of the first direct-current conversion circuit is connected to the energy recovery device, the output end of the first direct-current conversion circuit is connected to the input end of the second direct-current conversion circuit and the input end of the first inverter, the output end of the first inverter is connected to a power grid, and the output end of the second direct-current conversion circuit is connected to the energy storage element. Compared with the prior art, the method solves the problem that the original single feedback power grid mode causes the constraint of the train operation time table.

Description

technical field [0001] The invention relates to a braking feedback device, in particular to a hybrid rail transit braking energy feedback device and a control method. Background technique [0002] In the field of rail transit, the coasting mode is generally used to save energy, but in the coasting mode, the average running speed will be reduced, thereby reducing the effectiveness. [0003] In this regard, if the braking electric energy is recovered, it is obvious that the energy loss in the non-inert working condition can be solved, thereby improving the overall train operation efficiency. [0004] For example, Chinese patent CN104269885A discloses an energy feedback control method and an energy feedback system, wherein a braking resistor is connected in series to the energy feedback system through a switch tube. The method includes detecting the current voltage of the locomotive grid side to obtain the current voltage value of the locomotive grid side; judging whether the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/32
CPCH02J3/38H02J3/32
Inventor 戴维舒观澜
Owner LIVESINE ELECTRIC SHANGHAI CO LTD