Research of Zero-crossing detection for Sensorless BLDC motor

DOI

10.2991/meic-15.2015.269How to use a DOI?

Keywords

Back-EMF Zero-crossing detection; BLDC motor; Sensorless; DSC(Digital Signal Controller); software

Abstract

The key technology of Sensorless BLDC motor control is Zero-crossing detection. Based on full research and analysis of the Back-EMF motor principle, wave and traditional detection methods, a new method of Back-EMF Zero-crossing detection is introduced. The method does not rigidly adhere to the principles of traditional back-EMF zero-crossing detection, rejected the midpoint motor, depth filter and voltage comparison circuits in the design of the traditional zero-crossing detection circuit, gets commutation points by realizing three-phase voltage real time collection, filtering and designing the effective software algorithms. The method is applied in the electric car control system. The experiment result shows that the method has some advantages which are simple zero-crossing detection circuits, software with clear structure and good real-time and so on.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yun Ling
AU  - Yi-huai Wang
AU  - Le-le Zhu
PY  - 2015/04
DA  - 2015/04
TI  - Research of Zero-crossing detection for Sensorless BLDC motor
BT  - Proceedings of the 2015 International Conference on Mechatronics, Electronic, Industrial and Control Engineering
PB  - Atlantis Press
SP  - 1185
EP  - 1188
SN  - 2352-5401
UR  - https://doi.org/10.2991/meic-15.2015.269
DO  - 10.2991/meic-15.2015.269
ID  - Ling2015/04
ER  -