Micro Hydro Turbine
The Micro Hydro Turbine system outputs around 60-110 W all day long. We currently don't have any accurate information on its original efficiency, head, or other characteristics. Please update this section and the micro-hydro page if you know more.
Maintenance
You have to flash the magnetic field of the generator if it looses its magnetic field. Residual magnetism in the generator exciter field allows the generator to build up voltage during start-up. This magnetism is sometimes lost due to shelf time or improper operation, among other reasons. Restoring this residual magnetism is possible and is sometimes referred to as "flashing the exciter field". 1
Furthermore, we could get a flashing module to automatically flash the generator. Another option is to use a drill to excite the magnetic field again.2
https://www.hunker.com/13403116/how-to-flash-the-field-of-a-brushless-generator
http://www.dieselduck.info/machine/03%20electricity/flashing_generator.htm
http://www.jencin.com/Fixing.htm
How to flash the hydro generator
Step 1
Start the generator. Check the circuit breakers. Reset them if they are tripped.
Step 2
Insert the steel rod into the chuck of the corded drill. Tighten the chuck.
Step 3
Insert the other end of the steel rod into the cordless drill. Tighten the chuck.
Step 4
Plug the corded drill into the generator. Make sure both drills are set for forward (clockwise as viewed from the handle) rotation.
Step 5
Hold both drills tightly. Press the trigger switch of the corded drill.
Step 6
Press the trigger switch of the cordless drill, so that it spins the chuck of the corded drill. The corded drill acts as a small generator to feed current into the windings of the larger generator to magnetize the field and force it to start working. When this happens, the corded drill will start fighting against the cordless drill.
(https://www.hunker.com/13403116/how-to-flash-the-field-of-a-brushless-generator)
