Research and implementation of sensorless BLDC motor starting algorithm

Yanze Cheng; Yulin Zhang

doi:10.1117/12.2639711

19 October 2022 Research and implementation of sensorless BLDC motor starting algorithm

Yanze Cheng, Yulin Zhang

Proceedings Volume 12294, 7th International Symposium on Advances in Electrical, Electronics, and Computer Engineering; 122943Y (2022) https://doi.org/10.1117/12.2639711
Event: 7th International Symposium on Advances in Electrical, Electronics and Computer Engineering (ISAEECE 2022), 2022, Xishuangbanna, China

Abstract

The back EMF method is usually used in the operation control of sensorless BLDC motor, but in the starting stage of the motor, because its speed is too low, it is difficult to accurately detect the back EMF, resulting in starting failure or out of step reverse rotation of the motor. Aiming at the starting problem of BLDC motor without position sensor, this paper proposes a new starting algorithm. Compared with the traditional three-stage starting and inductance method, it can make more accurate positioning and acceleration, find a more suitable back EMF switching point, and have higher starting efficiency and starting success rate. Through experiments and exploration, the feasibility of the algorithm is verified.

Citation Download Citation

Yanze Cheng and Yulin Zhang "Research and implementation of sensorless BLDC motor starting algorithm", Proc. SPIE 12294, 7th International Symposium on Advances in Electrical, Electronics, and Computer Engineering, 122943Y (19 October 2022); https://doi.org/10.1117/12.2639711

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