A Novel Arithmetic Based on Coordinate Transformation for Sensorless Brushless DC Motor Drives
This paper presents a novel method for sensorless BLDC motor drives, which is based on coordinate transformation, in order to compensate the rotor position detection error caused by the first-order low-pass filter over wide speed ranges. Two coordinate systems are defined, which are named as ‘a’ and ‘b’. For compensating the error, the angle β, which is between ‘b’ coordinate system and ‘a’ coordinate system, is controlled in real time, and the zero-crossing timing of reconstructed position signal, which is the projection on ‘b’ coordinate system from ‘a’ coordinate system, is just the phase commutation timing. The rotor position detection error is analyzed and experimental results verify the analysis and demonstrate advantages of the new arithmetic.
BLDC sensorless coordinate transform wide speed ranges reconstruction
Yuanyuan Wu Xiaolin Wang Zhiquan Deng Zeyuan Liu Xing Lin Yin Wang Ming Chang
College of Automation Engineering Nanjing University of Aeronautics and Astronautics Nanjing, China
国际会议
成都
英文
246-249
2009-09-25（万方平台首次上网日期，不代表论文的发表时间）