Is there a space? Otherwise, try increasing the space to a high level or making the channel very narrow to increase flow. The generator uses large permanent magnets as the rotor, then binds the coils, say 20 turns, to make the stator. I think I answered a similar question. For the outgoing AC power, adjust the water flow to stabilize the voltage at around 12V, then add rectification, low-pass filtering, and voltage stabilization.
How to make a simple 12V generator? My power source is water.
Introduction How to make a simple 12V generator? My power source is water. Otherwise, try increasing the gap to a very high level, or making the channel very narrow to increase flow. produce electricity