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Small compressed air energy storage system and method

A technology of compressed air energy storage and energy storage system, applied in mechanical equipment, pumps, liquid variable capacity machinery, etc., can solve problems such as cost, volume, maintenance increase, etc., to improve tracking ability, improve ability, and reduce speed deviation Effect

Inactive Publication Date: 2015-07-29
CHINA UNIV OF MINING & TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

For small or micro compressed air energy storage equipment, two sets of independent motors will increase the cost, volume, maintenance, etc.

Method used

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  • Small compressed air energy storage system and method
  • Small compressed air energy storage system and method
  • Small compressed air energy storage system and method

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Embodiment 1

[0026] Embodiment 1: the small compressed air energy storage system and method of the present invention;

[0027] The energy storage device of the energy storage system includes: a controller, an air motor, a compressor, a switched reluctance motor / generator, a regulating valve, and an air storage tank; The resistance motor / generator is connected to the control input end of the regulating valve to control the opening or closing of the air motor, compressor, switched reluctance motor / generator and the regulating valve respectively; the output end of the compressor passes through the regulating valve and the air tank. The input end is connected, the output end of the air storage tank is connected to the input end of the air motor through a regulating valve, and the input and output shafts of the air motor and compressor are coaxially rotated with the input and output shafts of the switched reluctance motor / generator.

[0028] The controller includes: a DSP controller, a sensor, ...

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Abstract

The invention discloses a small compressed air energy storage system and method and belongs to the compressed air energy storage technology. The small compressed air energy storage system is composed of a storage tank, an air compressor, a pressure expansion machine and an electric / generator part. The small compressed air energy storage system uses a dual-functional switch reluctance electric / generator as a core motor to replace independent compression motor and engine in a general compressed air energy storage system, the system cost can be lowered, the volume is reduced, and the system reliability is improved. In the air compression process, the electric rotating speed is regulated through a self-adaptive control method according to the compression characteristic of the air storage tank so as to obtain an optimized compression efficiency. In the process of releasing air to generate electricity, the air pressure is regulated through the self-adaptive control method so as to regulate the rotating speed of the generator and obtain the optimized power generation efficiency. The small compressed air energy storage system is reasonable in structure, small in volume, high in efficiency and capable of providing peak clipping and valley filling for an electrical power system, or the small compressed air energy storage system serves as a small renewable distributed power generation storage device.

Description

technical field [0001] The invention relates to a compressed air energy storage system and method, in particular to a small compressed air energy storage system and method. Background technique [0002] With the increasing influence of environmental pollution and energy crisis, the renewable distributed power generation system represented by wind energy and solar energy has made great progress in the past ten years, and has become the development direction of the energy field in all countries in the world. However, new energy distributed power generation has the characteristics of periodicity, intermittent and instability, and direct connection to the power grid has a greater impact, and it needs to be better utilized in the form of a micro-grid. Therefore, it is necessary to combine energy storage units to reduce the volatility of the new energy microgrid and enhance its stability. Compressed air energy storage system is a kind of electric energy storage system that can re...

Claims

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Application Information

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IPC IPC(8): F04B41/02F04B35/04F04B49/06F01B23/10F01B25/00
CPCY02E60/16
Inventor 昝小舒陈昊于东升王青朱虹
Owner CHINA UNIV OF MINING & TECH
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