Design Close-Loop Control of BLDC Motor Speed Using Fuzzy Logic Method in Solar Power Water Pump with MATLAB/Simulink

In this research, the design of close loop BLDC motor speed control was designed with several simulation test conditions and also discuss the differences of boost converter with Fuzzy control and boost converter without Fuzzy control. The BLDC motor specifications used in this research are 3 phase, constant voltage is 80 V_peak L-L/krpm and the moment of inertia is 0.000553 J (kgm2). The specifications of the solar were Canadian CS5T 130M with a maximum power = 129W. The test results on the boost converter without using Fuzzy controls have fluctuating voltages. Whereas when using Fuzzy Logic, the output voltage is stable and the voltage is ± 100 V. In simulation. Fuzzy Logic circuits have THD values amounting to 2.68%, which corresponds to the standards specified by IEEE for voltages below 1 kV = <; 5%. The simulation test results with several conditions have made a difference in the results of the motor speed response. Based on the results of the simulation test, it is known that the speed control with the Fuzzy Logic circuit has better results compared to the open loop circuit.