2021 年 29 巻 2 号 p. 315-320
We are studying undersea wireless transfer. We have clarified the power transmission characteristics between the coils when the power supply coil / power receiving coil are waterproofed with a glass case. In the deep sea, it is necessary to use spherical pressure-resistant glass for the waterproof case in order to withstand high water pressure. However, when a wireless power transmission system is installed inside a sphere, the shape, size, and placement location of the coil are restricted. Therefore, we solve the problem with a coil shaped according to the case. This coil is called a cone spiral coil. In this paper, we analyze the wireless power transmission using a cone spiral coil by the finite element method and report the superiority of the cone spiral coil compared to the case where the helical coil is used.
