Sensorless Rapidly Varying Rotor Speed Control of BLDC Motor through Fast Commutation Error Correction Method

N. Dineshwar Reddy; G. Harini; A Keerthi; T. Tapan Chandra; G. Sudheer Kumar

doi:10.32628/IJSRST2512136

Authors

N. Dineshwar Reddy Department of Electrical and Electronics Engineering, Kakatiya Institute of Technology and Science (Autonomous), Warangal – 506 015, Telangana, India Author
G. Harini Department of Electrical and Electronics Engineering, Kakatiya Institute of Technology and Science (Autonomous), Warangal – 506 015, Telangana, India Author
A Keerthi Department of Electrical and Electronics Engineering, Kakatiya Institute of Technology and Science (Autonomous), Warangal – 506 015, Telangana, India Author
T. Tapan Chandra Department of Electrical and Electronics Engineering, Kakatiya Institute of Technology and Science (Autonomous), Warangal – 506 015, Telangana, India Author
G. Sudheer Kumar Department of Electrical and Electronics Engineering, Kakatiya Institute of Technology and Science (Autonomous), Warangal – 506 015, Telangana, India Author

DOI:

https://doi.org/10.32628/IJSRST2512136

Keywords:

sensorless, pulse width modulation technique, brushless DC motor, sensors, commutation

Abstract

The sensorless control of a BLDC (Brushless DC) motor can be challenging due to the rapidly varying rotor speed, which can result in errors in the commutation process. In this context, a fast commutation error correction method is proposed to overcome this issue. The proposed method utilizes an estimation of the rotor position based on the changing voltage when the device is placed in a magnetic field of the motor, which is measured by a Hall effect sensor. The measured voltage is used to calculate the rotor position. To implement the proposed method, a current controlled pulse width modulation (PWM) technique which uses a PID (Proportional Integral Derivative) controller to adjust the commutation angle. The performance of the system is evaluated through simulation and experimental studies, which demonstrate its ability to achieve accurate sensorless control of a BLDC motor, even under rapidly varying rotor speed conditions. Overall, the fast commutation error correction method provides a viable solution for achieving sensorless control of BLDC motors under challenging conditions, such as those encountered in high-speed applications.

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