DESIGN OF A 36 VOLT 350 WATT BLDC MOTOR CONTROL SYSTEM FOR ELECTRIC WHEELCHAIR

• Main Author: Ibnu Arif, Dhafa
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/81142
• Institution: Institut Teknologi Bandung

Manual wheelchairs are a solution to assist people with disabilities. However, manual wheelchairs have not been able to provide full mobility independence. An alternative solution that is also available is an electric wheelchair. However, in Indonesia, the price of electric wheelchairs is very expensive. This is due to the components of electric wheelchairs that are not fully domestically produced, such as one of them being the controller. Therefore, a more affordable electric wheelchair is needed. This can be achieved by increasing the number of domestically produced components through the design and manufacture of electric motor controllers for wheelchairs. This research focuses on the design and development of a control system for a 36-volt 350-watt BLDC motor, with the main focus being on the development of the controller and testing of the speed control system to obtain the best control strategy. In the controller design, the STM32-BluePill microcontroller, IRFS7530 MOSFET, and DRV8302 driver were selected as the main controller components. From the design and manufacture of the controller, the production cost of the controller was found to be Rp580,000. Then, the speed control system was designed using the field-oriented control current estimation method with a PID control strategy. Based on the results of this research, a BLDC motor controller for an electric wheelchair has been successfully designed, tested, and implemented according to the design requirements and objectives. Subsequently, based on the results of the control system testing, it was found that the PID control strategy is the best strategy to be used in the BLDC motor control system for electric wheelchairs.