DESIGN AND MODELLING OF A 500 W BRUSHLESS DC MOTOR FOR URBAN ELECTRIC BICYCLE

• Main Author: Kusuma Ajie, Irza
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/73664
• Institution: Institut Teknologi Bandung

Electric bike or more commonly known as e-bike, currently found rise in popularity among people in Indonesia. Unfortunately, this trend doesn’t correlate with the number as only a small handful of e-bikes are currently circulating the street compared to the more common conventional two-wheeled vehicle. One of the reason for this is due to the performance offered by electric bicycle such as range and torque output deemed inferior compared to the conventional two-wheeled vehicle. Another reason is the relatively expensive price of e-bikes that sway people’s interest towards it and hinder them from buying it. One of the biggest contributor to performance and price of e-bike is from its electric motor component. One of the most commonly used electric motor for e-bike propulsion system is brushless DC motor or in short BLDC motor. Therefore, on this research, optimization towards a 500 W Brushless DC (BLDC) motor employed as electric bicycle’s propulsion system was performed. From this optimization process, an alternative design of the motor was developed which gives better performance in terms of torque output and power capability and also lower cost in terms of materials used in the design. Further testing of the alternative design was performed to see whether it can comply with the performance requirement of an urban electric bicycle. From the simulation results, it was obtained that the alternative design of the motor manages to satisfy the operating condition imposed by the performance requirement of an urban electric bicycle.