| 摘要 |
A fiber reinforced composite flywheel for energy storage has a plurality of disks (3) in the form of a coil produced of continuous hoop and radial fibers (4), each disk (3) having a mix of fiber types in the hoop direction, relatively strong fibers disposed about an inner section (11) of the disk (3), an intermediate section (12) of the disk comprised of relatively strong and relatively lower strength fibers, and an outer portion having a mix of fibers containing fewer relatively strong fibers. A fiber reinforced composite flywheel, alternatively or in addition, has a higher volume of radial fibers (4) diposed about the intermediate section of the disk, to increase radial strength in a banded area of the disk subject to increased radial stress. Preferably, the disk (3) is composed with a 3-dimensional orthogonal weave architecture which allows the fibers to shear during weaving to provide minimum distortion of the spiral woven disk. Constructing a spiral woven composite flywheel disk (3) in accordance with the invention optimizes stress and strength properties to increase operating speed and energy storage capacity at minimum cost. |
