This research is being carried out to improve the quality of power supply caused by voltage fluctuations due to unstable hydro turbine generator speeds. A solution based on Fuzzy Logic Control was created to eliminate the problem of epileptic power supply in some parts of Nigeria, which was caused by the slow rotation of the hydro turbines. This is accomplished by creating a membership function to analyze the causes of slow turbine rotation, a membership function to increase turbine rotation, a fuzzy rule to generate constant power supply when the turbine rotates fast, and a model for Hydropower Generator speed control using a fuzzy software tool. When fuzzy is added into the model, the outcome gained is a stable power supply, which occurred as a result of increased turbine speed rotation and increased water flow via the hydroelectric penstock. When a fuzzy controller is utilized, the outcome of the turbine’s speed rotation is better than the proportional-integral (PI).
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