Influence of Stator Current and Machine Saliency on Sensorless Control Performance Based on Third-Harmonic Back-EMF
Influence of Stator Current and Machine Saliency on Sensorless Control Performance Based on Third-Harmonic Back-EMF
- Author(s): J.M. Liu and Z.Q. Zhu
- DOI: 10.1049/cp.2014.0291
For access to this article, please select a purchase option:
Buy conference paper PDF
Buy Knowledge Pack
IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.
7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014) — Recommend this title to your library
Thank you
Your recommendation has been sent to your librarian.
- Author(s): J.M. Liu and Z.Q. Zhu Source: 7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014), 2014 page ()
- Conference: 7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014)
- DOI: 10.1049/cp.2014.0291
- ISBN: 978-1-84919-815-8
- Location: Manchester, UK
- Conference date: 8-10 April 2014
- Format: PDF
This paper investigates the influence of stator current and machine saliency on rotor position estimation of permanent magnet synchronous machine (PMSM) based on third harmonic back-EMF which is contained in windings irrespective of the operational mode and parameters. Due to machine saliency and saturation of air gap flux-linkage, the amplitude and phase angle of third harmonic back-EMF will be affected by the stator current. Several experimental analyses are carried out based on a dSPACE platform with a laboratory PMSM validate that the machine speed and q-axis current will not affect the phase angle of the third harmonic back-EMF, whereas there will exhibit rotor position estimation error by applying negative d-axis current, and with large positive d-axis current, the third harmonic back-EMF will be seriously distorted due to critical air gap saturation.
Inspec keywords: permanent magnet machines; synchronous machines; rotors; harmonic analysis; air gaps; sensorless machine control; electric potential; magnetic flux; stators
Subjects: Synchronous machines; Protection apparatus; Control of electric power systems
Related content
content/conferences/10.1049/cp.2014.0291
pub_keyword,iet_inspecKeyword,pub_concept
6
6