Title:
FLYWHEEL ENERGY STORAGE SYSTEM HAVING DOUBLY-FED TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2023/088320
Kind Code:
A1
Abstract:
The present invention provides a flywheel energy storage system having a doubly-fed transmission. The flywheel energy storage system comprises an electric motor, a flywheel rotor, the doubly-fed transmission, and a synchronous generator. The electric motor is adjacent to the flywheel rotor to drive the flywheel rotor to rotate. The doubly-fed transmission comprises an outer rotor, an inner rotor, and a converter; the outer rotor is sleeved on the inner rotor; and the flywheel rotor is transmittingly connected to the outer rotor to drive the outer rotor to rotate or the flywheel rotor is transmittingly connected to the inner rotor to drive the inner rotor to rotate. The output mechanical rotational speed of the doubly-fed transmission can remain unchanged, so that a generator can be driven to generate a constant frequency current, the requirement of power transmission to a power grid is satisfied, a power electronic device does not need to be used, the rotational inertia in the power grid can be increased, necessary voltage and frequency support is provided for the power grid, and the capability of the power grid to efficiently receive new energy is improved.
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Inventors:
CHEN JUN (CN)
YU JUNWU (CN)
GUI ZHIYUAN (CN)
SUN XUAN (CN)
YIN JINFENG (CN)
GAO KANGWEI (CN)
BAI NING (CN)
YU JUNWU (CN)
GUI ZHIYUAN (CN)
SUN XUAN (CN)
YIN JINFENG (CN)
GAO KANGWEI (CN)
BAI NING (CN)
Application Number:
PCT/CN2022/132332
Publication Date:
May 25, 2023
Filing Date:
November 16, 2022
Export Citation:
Assignee:
STATE POWER INVESTMENT CORPORATION RES INSTITUTE (CN)
International Classes:
H02K7/02; H02K49/10; H02P9/00
Foreign References:
| CN114257027A | 2022-03-29 | |||
| CN114257029A | 2022-03-29 | |||
| CN113489230A | 2021-10-08 | |||
| CN107681828A | 2018-02-09 | |||
| DE102018204787A1 | 2019-10-02 | |||
| CN201226504Y | 2009-04-22 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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