Brushless DC Motor Based E-Rickshaw Controller Design

This paper discusses and elaborates designing of Brushless DC (BLDC) motor based e-rickshaw controller. The controller design is based on STM32F072 microcontroller with dedicated features for commercial motor control applications. The controller system is used for controlling BLDC motor operation, detection of throttle, hall signals, speed, current and, to control the parameters in open loop and closed loop operation. Hall sensor failure is a common fault in such type of applications which is addressed in the design with its detection and mitigation technique which leads to timely save the drive system from unwanted operation and damage. Further, modification in the heat sink design is proposed considering the issue of overheating of controllers in e-rickshaws. Over current protection method independent of software calculations to reduce delay in corresponding corrective action is also incorporated in the design.