Title :
DSP-based brushless DC motor sensorless drivers with sine PWM
Author :
Chern, Tzuen-Lih ; Liu, Li-Hsiang ; Tien, Chin-Wen ; Chen, Chun-Yu
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
Abstract :
This paper presents a brushless DC motor sensorless driver with sine pulse width modulation signal. For speed control, the current feedback is included to the closed loop control strategy to decrease the power consumption and increase the motor performance. In addition, the sine wave phase-changing signal is closed with a set of specific electrical angles in the zero crossing point to detect the back electromotive force and observe the output performance. A simple mathematical model of brushless DC motor is derived, and the control strategy is implemented by digital signal processing (DSP) platform. The validity of the method is verified by the experiments.
Keywords :
angular velocity control; brushless DC motors; closed loop systems; digital signal processing chips; feedback; mathematical analysis; pulse width modulation; sensorless machine control; DSP; back electromotive force; brushless DC motor sensorless drivers; closed loop control strategy; current feedback; digital signal processing; mathematical model; power consumption; sine PWM; sine pulse width modulation signal; speed control; Brushless DC motors; DC motors; Digital signal processing; Energy consumption; Feedback loop; Phase detection; Pulse width modulation; Sensorless control; Space vector pulse width modulation; Velocity control; Brushless DC Motor; Digital Signal Processing; Sensorless;
Conference_Titel :
Power Electronics and Drive Systems, 2009. PEDS 2009. International Conference on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-4166-2
Electronic_ISBN :
978-1-4244-4167-9
DOI :
10.1109/PEDS.2009.5385681
