Patent ID: 8384235

Claim:
A wind turbine generator in which communication can be performed between a hub and a nacelle, the wind turbine generator comprising: a first power line that carries electrical power between the hub and the nacelle via a slip ring; a hub-side signal processing unit, provided on a hub side of the slip ring, that superimposes an information signal onto electrical power carried by the first power line and extracts an information signal superimposed onto the electrical power carried by the first power line; and a nacelle-side signal processing unit, provided on a nacelle side of the slip ring, that superimposes an information signal onto the electrical power carried by the first power line and extracts an information signal superimposed onto the electrical power carried by the first power line, wherein there is a plurality of first power lines, including an AC power line that carries AC electrical power and a DC power line that carries DC electrical power, and the power line onto which an information signal is superimposed is switched according to a condition of power transmission, an information amount, or a type of the information signal on each of the power lines.