Abstract
The majority of the work performed for detecting
eccentricity faults for permanent magnet synchronous motors
(PMSM) focus on motor current signature analysis (MCSA), as
it provides continuous on-line monitoring with existing current
sensors. However, MCSA cannot be applied under nonstationary
conditions and cannot distinguish faults with load
torque oscillations, which are limitations for many PMSM
drive applications. In this paper, it is shown that the d-axis
inductance, Ld, decreases with increase in the severity of
eccentricity due to the change in the degree of magnetic
saturation, and it is proposed as a new fault indicator. The
inverter can be used to perform a standstill test automatically
whenever the motor is stopped, to measure Ld for eccentricity
testing independent of load variations or oscillations, which is
not possible with MCSA. An FE and experimental study on a
10hp PMSM verifies that eccentricity can be detected
independent of the load with high sensitivity and reliability.
| Originalsprache | Englisch |
|---|---|
| Titel | SDEMPED 2011 |
| Publikationsstatus | Veröffentlicht - 2011 |
| Veranstaltung | 8th IEEE Symposium on Diagnostics for Electrical Machines, Power Electronics & Drives, SDEMPED 2011 - Dauer: 5 Sept. 2011 → 8 Sept. 2011 |
Konferenz
| Konferenz | 8th IEEE Symposium on Diagnostics for Electrical Machines, Power Electronics & Drives, SDEMPED 2011 |
|---|---|
| Zeitraum | 5/09/11 → 8/09/11 |
Research Field
- Nicht definiert
Schlagwörter
- Airgap Eccentricity; Condition Monitoring; Diagnostics; Magnetic Saturation; Motor Current Signature Analysis (MCSA); Permanent Magnet Synchronous Motor;