MOTIVE POWER SUPPLY SYSTEM AND ELECTRIC POWER GENERATION SYSTEM

To provide a motive power supply system that can supply stable motive power without being affected by hours of sunlight, weather, etc. and to provide an electric power generation system that can generate stable electricity at a low cost.SOLUTION: A motive power supply system 10 comprises: a drag-type wind turbine 20 having a shaft 202 to be the rotational axis; a flow channel forming part 30 that forms a flow channel by which a flow of air that exited the drag-type wind turbine 20 is used again as a motive power source for the drag-type wind turbine 20; a transmission part 40 that decreases or increases a speed of rotation of the drag-type wind turbine 20 to output the same to an outside; a drive device 50 for rotating the drag-type wind turbine 20 that is standing still; an air release device 60 for discharging a portion of the air flowing through the flow channel to the outside; and noise reduction devices 63a, 63b for reducing the generated noise.SELECTED DRAWING: Figure 1 【課題】日照時間や気象等の影響を受けることなく、安定した動力を供給できる動力供給システム及び廉価で安定した電力を発生できる発電システムを提供する。【解決手段】動力供給システム１０は、回転軸となるシャフト２０２を有する抗力型風車２０と、抗力型風車２０から出た空気の流れを再び抗力型風車２０の動力源とする流路を形成する流路形成部３０と、抗力型風車２０の回転を減速又は増速して外部に出力する変速部４０と、静止した抗力型風車２０を回転させるための駆動装置５０と、流路を流れる空気の一部を外部に放出する空気放出装置６０と、発生する騒音を低減する騒音低減装置６３ａ、６３ｂを備える。【選択図】図１