Design and Implementation of Buck Boost Converter for fuzzy Logic Controller Based DC Motor Speed Control

DC motor is an electric machine that is widely used in the industrial and home fields. In its application, the speed of a DC motor often decreases the voltage caused by the load received by the motor, so that the speed is not constant. So to maximize the performance of a DC motor, a speed controller is needed that is used to adjust the speed of the DC motor to be constant and in accordance with the actual speed. The method of the Fuzzy Logic Controller is used to adjust the speed of the DC motor so that the actual speed obtained is more precise and has resistance to interference and has an accurate response. In this research, a buck boost converter will be designed using the Fuzzy Logic Controller method to control the speed of a DC motor. In its implementation, the buck boost converter has an average efficiency of 85.3% for buck mode and 86.79% for boost mode at 10-100% loading. While on a DC motor with a load, the buck boost converter has an average of 71.55% for buck mode and 74.89% for boost mode. Then in testing the DC motor which is kept at a constant speed, the buck boost converter can maintain its average output voltage of 23.98 Volts with an error value of 0.02% when in buck mode and the average output voltage is 23.95 Volts with a value of 23.95 Volts. error of 0.08% when in boost mode. So that the speed of the DC motor can be kept constant with an average speed of 478 rpm with an error value of 0.4% in buck and boost modes.