Control Techniques of Sensorless BLDC Motor Drive for a Vehicle Fuel Pump Application

자동차 연료펌프용 BLDC 전동기구동의 센서리스 제어기법

  • Received : 2011.08.08
  • Accepted : 2011.09.07
  • Published : 2011.10.01


This paper suggests a control technique of the sensorless brushless DC (BLDC) motor drive for a vehicle fuel pump application. The sensorless technique based on a comparator and a potential start-up method with high starting torque are proposed. The comparator is used to generate the commutation signals in phase with the three-phase back-EMFs. The rotor position is aligned at standstill for maximum starting torque without an additional sensor and any information of motor parameters. Also, the stator current can be easily adjusted by modulating the pulse width of the switching devices during alignment. Some experiments are implemented on a single chip 16-bit DSP controller to demonstrate the feasibility of the sensorless techniques.


Supported by : 울산대학교


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