HYDROELECTRIC POWER GENERATION APPARATUS

摘要

A hydroelectric power generation apparatus according to the present invention is provided with: an upstream-side pipe (1); a downstream-side pipe (2); a runner casing (3); a boss (4a, 4b) that guides the water current in the direction of an inner wall of the upstream-side pipe; and a runner (5) housed within the runner casing rotatably around the axis of the runner casing. The boss is divided into one anchored boss unit (4a) that is anchored to the upstream-side pipe along the axis direction of the runner casing, and one rotating boss unit (4b) that is intermeshed with the runner. An armature (70) is mounted on the anchored boss, and a permanent magnet field (80) is placed on the rotation boss so as to be arranged in opposition to the armature.