Title :
Sensorless flux-weakening control of permanent magnet brushless machines using third-harmonic back-EMF
Author :
Shen, J.X. ; Zhu, Z.Q. ; Howe, D.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, UK
Abstract :
The sensorless control of brushless machines based on the detection of the third-harmonic back-EMF is relatively simple and potentially low-cost. However, it has been only reported for brushless DC operation and normal commutation. In this paper, the utility of the method for the sensorless control of both brushless DC and AC drives, including operation in the flux-weakening mode, is demonstrated.
Keywords :
AC motor drives; DC motor drives; brushless DC motors; brushless machines; digital control; digital signal processing chips; machine control; magnetic flux; magnetic variables control; parameter estimation; rotors; DSP; brushless AC drives; brushless DC drives; permanent magnet brushless machines; rotor position estimation; sensorless flux-weakening control; third-harmonic back-EMF; Band pass filters; Brushless machines; Commutation; Machine windings; Permanent magnets; Power harmonic filters; Pulse width modulation; Resistors; Sensorless control; Voltage;
Conference_Titel :
Electric Machines and Drives Conference, 2003. IEMDC'03. IEEE International
Print_ISBN :
0-7803-7817-2
DOI :
10.1109/IEMDC.2003.1210397
