Title :
Sensorless Operation Capability of Surface-Mounted Permanent-Magnet Machine Based on High-Frequency Signal Injection Methods
Author :
Lin, T.C. ; Zhu, Z.Q.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK
Abstract :
This paper analyzes the sensorless operation capability of a surface-mounted permanent-magnet (PM) (SPM) machine based on high-frequency (HF) voltage injection techniques. To investigate the machine saliency, the magnetic saturation-induced rotor saliency by PM is experimentally measured and analyzed under various load conditions. Moreover, the influence of cross-saturation and the magnetic polarity identification are also examined. Furthermore, the investigation has considered the resistance-based saliency due to HF eddy-current loss. In order to highlight the effectiveness of the sensorless operation capability, the tests are carried out under different operating conditions.
Keywords :
eddy current losses; permanent magnet machines; rotors; sensorless machine control; HF eddy-current loss; HF voltage injection technique; SPM machine; cross-saturation; high-frequency signal injection method; high-frequency voltage injection technique; machine saliency; magnetic polarity identification; magnetic saturation-induced rotor saliency; resistance-based saliency; sensorless operation capability effectiveness; surface-mounted PM machine; surface-mounted permanent-magnet machine; Current measurement; Hafnium; Observers; Rotors; Saturation magnetization; Sensorless control; Brushless ac (BLAC) machine; brushless ac machine; high-frequency (HF) signal injection; high-frequency signal injection; permanent magnet machine; permanent-magnet (PM) machine; rotor and speed estimation; sensorless control;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2014.2382762
