Mechanically coupled flywheel assisted composite energy storage system and control method thereof

A composite energy storage and coupling technology, applied in the field of control, can solve the problems of slow start of compressed air energy storage, long state switching time, and reduced overall efficiency, etc., to achieve easy operation and implementation, improve output power level, control simple strategy

Active Publication Date: 2019-04-26
SHANDONG UNIV
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  • Application Information

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Problems solved by technology

However, for a power energy storage element such as a flywheel, it is easy to exceed its capacity when charged for a long time, and for an energy storage element such as compressed air energy storage, frequent charging and discharging will shorten its service life
Moreover, due to the many energy conversion links of the electric coupling method, the overall efficiency of the system is reduced, and at the same time, it does not solve the problems of slow startup of compressed air energy storage and long state switching time

Method used

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  • Mechanically coupled flywheel assisted composite energy storage system and control method thereof
  • Mechanically coupled flywheel assisted composite energy storage system and control method thereof
  • Mechanically coupled flywheel assisted composite energy storage system and control method thereof

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[0044] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0045] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0046] In a typical implementation of the present application, such as figure 1 As shown, a mechanically couple...

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Abstract

The invention discloses a mechanically coupled flywheel assisted composite energy storage system and a control method thereof. The system comprises a flywheel module and a compressed air energy storage module. The flywheel module is connected to a rotating disc through a continuously variable transmission when a clutch is closed, and the rotating disc achieves pre-synchronization with the flywheelspeed by motor acceleration. The rotating disc is connected to a reciprocating compressor, the reciprocating compressor is connected to the compressed air energy storage module, and the compressed air energy storage module compensates an intermittent power supply by connecting a generator. The flywheel energy storage and the compressed air energy storage adopt a mechanically coupled parallel structure. By collecting the flywheel speed, the clutch switch and the compressed air energy storage working state are determined, and the control strategy is simple and easy to operate and achieve.

Description

technical field [0001] The present disclosure relates to the field of control technology, in particular to a mechanically coupled flywheel-assisted composite energy storage system and a control method. Background technique [0002] People's demand for energy is increasing day by day, and the contradiction between energy supply and demand is becoming increasingly prominent. The development of new energy has become an inevitable requirement for sustainable economic development. New energy generation such as wind energy, solar energy, and tidal energy has become the mainstream direction of energy research in the world today. A large number of distributed and intermittent energy sources are connected to the grid, which relieves the energy pressure, but it also exacerbates the difficulty in maintaining the balance between supply and demand of the grid. As a result, the grid power supply is tense during the peak period of electricity consumption, and in the middle of the night, t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28H02J3/30F03G3/08
CPCF03G3/08H02J3/28H02J3/30Y02E60/16
Inventor 张承慧马昕李珂王鲁泮
Owner SHANDONG UNIV
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