Power self-adjusting method and device for vaneless turbine based on boundary effect

The invention discloses a power self-adjusting method for a vaneless turbine based on a boundary effect. The vaneless turbine comprises N disc bodies mounted on a shaft, wherein (N-2) fan-shaped discbodies with variable disc body areas are mounted between two invariable discs, the disc bodies are fan-shaped disc bodies provided with telescopic structures, and a vaneless turbine controller controls the shapes of the disc bodies in the vaneless turbine. According to the method, when the received power generation demand is increased, the disc bodies are controlled to be unfolded to be in a discshape, so that disc body gaps are reduced, and the boundary effect of fluid is improved; and when the received power generation demand is reduced, the disc bodies are controlled to be unfolded to be in a fan shape, so that the disc body gaps are reduced, and the boundary effect of the fluid is improved. The process that the disc bodies are controlled to be unfolded to be in the fan shape when thereceived power generation d