Title:
FLYWHEEL ENERGY STORAGE SYSTEM HAVING ELECTROMAGNETIC COUPLER
Document Type and Number:
WIPO Patent Application WO/2023/088321
Kind Code:
A1
Abstract:
Provided in the present disclosure is a flywheel energy storage system having an electromagnetic coupler. The flywheel energy storage system comprises an electric motor, a flywheel rotor, an electromagnetic coupler, a frequency converter and a power generator, wherein the electric motor is connected to the flywheel rotor, so as to drive the flywheel rotor to rotate; and the electromagnetic coupler comprises an outer rotor and an inner rotor, wherein the outer rotor is sleeved on and spaced apart from the inner rotor, the flywheel rotor is in transmission connection with the outer rotor or the inner rotor, and the outer rotor generates a rotating magnetic field to drive the inner rotor to rotate, or the inner rotor generates a rotating magnetic field to drive the outer rotor to rotate. The output rotation speed of the electromagnetic coupler can remain unchanged, such that a power generator can be driven to generate a constant-frequency current, thereby meeting the requirement for transmitting power to a power grid; and there is no need to use a power electronic apparatus, and the moment of inertia in the power grid can be improved, thereby providing necessary voltage and frequency support for the power grid, and improving the capability of the power grid to efficiently receive new energy.
Inventors:
CHEN JUN (CN)
FENG CHEN (CN)
ZENG ZIJING (CN)
SUN CE (CN)
LIU TENGFEI (CN)
ZHANG WEIQI (CN)
BAI NING (CN)
FENG CHEN (CN)
ZENG ZIJING (CN)
SUN CE (CN)
LIU TENGFEI (CN)
ZHANG WEIQI (CN)
BAI NING (CN)
Application Number:
PCT/CN2022/132334
Publication Date:
May 25, 2023
Filing Date:
November 16, 2022
Export Citation:
Assignee:
STATE POWER INVESTMENT CORPORATION RES INSTITUTE (CN)
International Classes:
H02K7/02; H02J3/24; H02J3/30; H02J15/00; H02K49/10
Foreign References:
| CN114257030A | 2022-03-29 | |||
| CN114257028A | 2022-03-29 | |||
| CN105337474A | 2016-02-17 | |||
| CN102155356A | 2011-08-17 | |||
| CN113489029A | 2021-10-08 | |||
| EP1098422A1 | 2001-05-09 | |||
| US20150293548A1 | 2015-10-15 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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