テザーシステムによる再生可能エネルギーの伝達について

抄録

A tether system is employed to transfer the rotational energy generated by a windmill on high sky to generate electricity on a generator placed on the ground. The windmill is the straight-bladed horizontal-axis turbine placed on the high sky in order to obtain constant and strong wind resources over the canopy of the ground. The electric generator is placed on the ground in order to reduce the payload to fly on the high sky. Tether system is employed for the transfer of energy from the windmill to the electric generator since of its simplicity, light weight and strength against tether tension. Tethered energy transfer has no loss in principle since the energy in tether is a product of tether tension and velocity. The efficiency is reduced however through the contact of tether with the rotational axes of the windmill and the electric generator. This paper reports a study on the transfer of energy in a tethered airborne system as proposed by the Japanese high sky air borne study members.