Desain dan Implementasi Six-Step Comutation pada Sistem Kontrol Motor BLDC 1,5 KW
This paper presents details design of 3 phase inverter for speed control BLDC motor. BLDC motors are included in synchronous motors with permanent magnets, so this motor is equipped with a hall-efect sensor to detect the rotor position. With the data from hallefect, the inverter can supply the electrical energy into the motor under synchronous conditions. In this study used a VSI for setting BLDC motor speed. Output setting of 3 phase inverter using the six-step comutation method because this method is simple and easy to implement. Output setting of the inverter using the six-step method will produce PWM output wave in square with a 120° commutation. Duty cycle setting on the PWM signal will change the inverter output, so will affect the speed of the BLDC motor. This concept is implemented using ARM STM32F407VGT6 microcontroller. Then open-loop testing is done by variying duty cycle value from 0% to 95% so that the speed response will change. While close-loop testing is done by providing motor speed feedback to the microcontroller to provide duty cycle response which setting automatically according to the specified speed setpoint. Based on the results obtained, the method motor speed control of BLDC is able to provide a speed response in accordance with the setpoint value specified.