Analysis of Stator Resistance Effects in Carrier Signal Injection Based Sensorless Control of Permanent Magnet Synchronous Machine

Abstract:

This paper analyzes the effects of stator resistance on rotor position estimation accuracy in carrier signal injection based sensorless control of PMSM. Carrier current expressions are derived for both rotating and pulsating voltage injection method when the stator resistance is taken into account. Position estimation errors resulted from stator resistance are analyzed theoretically and investigated by simulation. It is shown that the influences of stator resistance on above two injection methods are quite different. The stator resistance will result in a position estimation error in the rotating voltage injection method. But it does not affect the position estimation accuracy in the pulsating voltage injection method as long as a suitable signal extracting method is used.

• Periodical: Advanced Materials Research (Volumes 383-390)
• Pages: 5951-5957
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.383-390.5951
• Online since: November 2011
• Authors: Jian Min Wang, Shi Xia Tian
• Keywords: Carrier Current Expression, Carrier Signal Injection, Permanent Magnet Synchronous Machine, Position Estimation Error, Sensorless Control, Stator Resistance Effect

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