Korea Electric Power Corporation

Byeong Cheol Park

Byung Jun Park

Young Hee Han

Tae Hyun Sung

Se Yong Jung

Jeong Phil Lee

Nyeon Ho Jeong

Disclosed is a large capacity hollow-type flywheel energy storage device. The energy storage device includes a hollow shaft, a vacuum chamber receiving the hollow shaft, a flywheel having a predetermined weight and disposed at an inner edge of the vacuum chamber, and a hub connecting the flywheel to the hollow shaft and disposed in the vacuum chamber to be rotatable together with the flywheel. A superconductive bearing and an electromagnet bearing are disposed inside and outside the hollow shaft, respectively, such that magnetic forces thereof can be shielded from each other. Thus, magnetic interference between the superconductive bearing and the electromagnet bearing is shielded by the magnet shield interposed therebetween, thereby preventing rotation loss by stabilizing a structural mechanism during rotation while improving design adaptability.

Growing community of inventors

Daejeon, South Korea

Byeong Cheol Park