Title :
Optimal design of magnet pole arc considering utility of third-harmonic back-EMF in high-speed sensorless brushless DC motors
Author :
Wang, K. ; Shen, J.X. ; Zhou, F.Z. ; Qiu, R.H. ; Lin, R.G.
Author_Institution :
Zhejiang Univ., Hangzhou
Abstract :
There is increasing interest in high speed permanent magnet, brushless DC motors for a wide range of applications. This paper presents some electromagnetic design considerations specifically in the utility of the third-harmonic back-EMF in sensorless operation of high-speed brushless DC motors, including how to increase the third-harmonic airgap field and back-EMF by optimizing the pole arc of parallel-magnetized permanent magnets.
Keywords :
brushless DC motors; electric potential; permanent magnet motors; electromagnetic design; high speed permanent magnet motor; magnet pole arc; sensorless brushless DC motor; third-harmonic back-EMF; Brushless DC motors; Brushless motors; DC motors; Diodes; Permanent magnet motors; Phase detection; Saturation magnetization; Sensorless control; Stator cores; Traction motors; Back-EMF; Brushless DC Motors; High Speed Motors; Sensorless Control; Third-Harmonic;
Conference_Titel :
Electrical Machines and Systems, 2007. ICEMS. International Conference on
Conference_Location :
Seoul
Print_ISBN :
978-89-86510-07-2
Electronic_ISBN :
978-89-86510-07-2
