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Free wheel energy-storage system for reclaiming regenerative braking energy of urban railway traffic

A technology for flywheel energy storage and urban rail transit, applied in the field of flywheel energy storage systems, can solve the problems of unadjustable output power, high manufacturing and maintenance costs, and low energy storage, and save resistance energy consumption, manufacturing and maintenance costs. low energy consumption

Inactive Publication Date: 2007-09-26
严密 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The system of the above-mentioned existing technical solutions has disadvantages such as large energy consumption, high manufacturing and maintenance costs, low energy storage, non-adjustable output power, and inability to directly connect to the urban rail DC power grid.

Method used

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  • Free wheel energy-storage system for reclaiming regenerative braking energy of urban railway traffic
  • Free wheel energy-storage system for reclaiming regenerative braking energy of urban railway traffic
  • Free wheel energy-storage system for reclaiming regenerative braking energy of urban railway traffic

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Embodiment Construction

[0037] In one embodiment of the present invention, the overall structure of a flywheel energy storage system for recycling urban rail transit regenerative braking energy is shown in Figure 1: the system is a 1500KW traction system for recycling a train of subway vehicles regenerative braking energy of the motor. It consists of a water pool (1) and 50 flywheel energy storage subsystems (2) immersed in the water pool. The input and output cables of the motor devices in these 50 flywheel energy storage subsystems are directly connected with the main cable (2a) of the urban rail transit DC grid in parallel (in another embodiment of the present invention, they are connected with the urban rail transit chopper regulator connection for processing regenerative braking energy).

[0038] The above water pool is used to cool the flywheel energy storage subsystem and recycle the heat energy dissipated from the flywheel energy storage subsystem; it includes pool water (1a) for cooling the...

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Abstract

It is energy economical, low in cost, high in energy storage, adjustable in output power, and directly linking with urban network. It comprises the water pool for cooling and recovering heat from the fly wheel energy storage sub systems, with several energy storage system's permanent DC generator power sum big or equal to the required recovery or reproduction demanded power for the traction of vehicles, and they use overlap mode to directly connect with the urban DC network, air pressure inside the shell equal or lower than 10-4Pa and the limit rotation speed higher than 150000 rpm of the fly wheel, with the bearing using magnetic bearing.

Description

(1) Technical field [0001] The invention relates to a flywheel energy storage system for recycling urban rail transit regenerative braking energy. (2) Background technology [0002] Urban rail transit is a general term for subway or light rail. Its urban rail grid uses direct current, and the power of the traction motor of each train is ≥1500KW. During the operation, the distance between stations is short and the starting and braking are frequent. Therefore, the regenerative system of feedback urban rail grid The kinetic energy (electric energy) is considerable. At present, in domestic urban rail transit (such as subways in Beijing, Shanghai, and Guangzhou), the regenerative braking energy is processed by first using the chopper voltage regulator device to chop the wave voltage and adjust the voltage, and then remove a small part to be allocated to other adjacent trains. Except for use, the remaining part is burned in vain with a resistance absorbing device; it is reported ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03G7/00
Inventor 严密唐荫溥
Owner 严密
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