Authors : K. Thufail Muhammed and K. Balaji
Abstract: The sensorless based brushless DC motor has generate continuous power supply even under the faulty situation in inverter. In order to improving the performance and continuous operation of BLDC motor, a fault control circuit is used to protect and continous power supply to motor. In this study, the fault tolerant control and soft start capabilty of BLDC motor is of great importance for its continuous operating capacity. Fault tolerant topology composed of an additional phase leg and a fault protective circuit for the high-speed low-inductance BLDC motor. The analysis covers a short circuit and overvoltage phenomenon after the switch faults, a new fault isolation and system reconfiguration method is presented. The switch is used to fault identification and isolate the faulty leg and supply the power to the additional leg. Simulation performance are verified and fault indication are using MATLAB/Simulink results and hardware implemented using embedded controller to verify about soft start, fault identification and fault tolerant performance of BLDC drive system.
K. Thufail Muhammed and K. Balaji, 2018. Control and Implementation of Fault Tolerant Brushless DC Motor Drive for Automation Industries Application. Journal of Engineering and Applied Sciences, 13: 4580-4587.