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Analysis of Estimation Errors in Rotor Position for a Sensorless Control System Using a PMSM
- Issue Date
- Sep-2012
- Publisher
- 전력전자학회
- Keywords
- Angle error; Permanent magnet synchronous motor; Sensorless control
- Citation
- Journal of Power Electronics, v.12, no.5, pp 748 - 757
- Pages
- 10
- Journal Title
- Journal of Power Electronics
- Volume
- 12
- Number
- 5
- Start Page
- 748
- End Page
- 757
- ISSN
- 1598-2092
2093-4718
- Abstract
- In a sensorless control system with a Permanent Magnet Synchronous Motor (PMSM), the angular position of the rotor flux can be estimated by a voltage equation. However, the estimated angle may be inaccurate due to various causes. In this paper, it was comprehensively analyzed how various causes affect the angle error. As a result of the analysis, an error equation intuitively describing these relationships was derived. The parameter errors of a PMSM and the non-ideal properties of the driving system were identified as error-causing factors. To demonstrate the validity of the error equation, PMSMs were tested at various operating points. The variations in angle errors could be well explained with the error equation.
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Related Researcher
- Ji, Jun Keun
- College of Engineering (Department of Electrical Engineering)