Title :
Power factor correction in sensorless BLDC motor drive
Author :
Bist, Vashist ; Singh, Bhim
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol. Delhi, New Delhi, India
Abstract :
This work presents a sensorless brushless DC motor (BLDCM) drive with power factor correction (PFC). The speed control of BLDCM is achieved by varying the DC bus voltage of the voltage source inverter (VSI) feeding BLDCM. The BLDCM is electronically commutated using a VSI operating at low frequency switching for reducing the switching losses in VSI. A canonical switching cell (CSC) converter is used for varying the DC bus voltage of VSI. This CSC converter is operated in discontinuous inductor current mode (DICM) for achieving a power factor correction (PFC) inherently without any sensing requirement. The rotor position sensors are eliminated by using sensorless control of BLDCM. Hence, a sensorless BLDCM drive is developed as a cost effective solution for low power applications. Its performance is evaluated on a developed prototype at various speeds with unity power factor (UPF) at AC mains.
Keywords :
DC motor drives; angular velocity control; brushless DC motors; power factor correction; sensorless machine control; voltage control; AC mains; CSC converter; DC bus voltage; DICM; PFC; UPF; VSI; canonical switching cell converter; discontinuous inductor current mode; power factor correction; sensorless BLDC motor drive; sensorless BLDCM drive; sensorless brushless DC motor drive; sensorless control; speed control; switching losses; unity power factor; voltage source inverter; Delays; Power factor correction; Rotors; Sensorless control; Sensors; Switches; Voltage control; Brushless DC Motor; Power Factor Correction; Rotor Position Phase Delay Compensation; Sensorless Control;
Conference_Titel :
Power Electronics (IICPE), 2014 IEEE 6th India International Conference on
Print_ISBN :
978-1-4799-6045-3
DOI :
10.1109/IICPE.2014.7115826
