Sensorless Control of BLDC Motor Drive for an Automotive Fuel Pump Using a Hysteresis Comparator

• Published in: IEEE transactions on power electronics Vol. 29; no. 3; pp. 1382 - 1391
• Main Authors: CHUN, Tae-Won, TRAN, Quang-Vinh, LEE, Hong-Hee, KIM, Heung-Geun
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.03.2014; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Brushless dc (BLDC) motor; Capacitors. Resistors. Filters; Circuit properties; Commutation; Control systems; Electric power; Electric, optical and optoelectronic circuits; Electrical engineering. Electrical power engineering; Electrical machines; Electronic circuits; Electronics; Exact sciences and technology; Experiments; Frequency filters; Fuel pumps; Hysteresis; hysteresis comparator; Hysteresis motors; Input output; Miscellaneous; Regulation and control; Rotors; Sensorless control; Sensors; start-up technique; Stator windings; Switching; Various equipment and components; Motor car; Brushless dc (BLDC) motor; Hysteresis loop; Alignment; Brushless DC motors; Comparator circuit; Selector switch; Electric motor; start-up technique; Pulse width; Stator; hysteresis comparator; Control system; Measurement sensor; Sensorless control; Experimental study; Motor control; Rotor; Integrated circuit; Starting; Automobile industry; Ripple; Low pass filter; Phase delay; Potential method
• ISSN: 0885-8993; 1941-0107
• DOI: 10.1109/TPEL.2013.2261554

This paper develops the brushless dc (BLDC) motor sensorless control system for an automotive fuel pump. The sensorless techniques that are based on a hysteresis comparator and a potential start-up method with a high starting torque are suggested. The hysteresis comparator is used to compensate for the phase delay of the back EMFs due to a low-pass filter (LPF) and also prevent multiple output transitions from noise or ripple in the terminal voltages. 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 DSP controller to demonstrate the feasibility of the suggested sensorless and start-up techniques.