Analysis and Simulation of Low Speed Sensorless Vector Control with Two Current Signal Injection Schemes

Abstract:

Two current signal injection methods, the fluctuating high frequency (HF) current signal injection and low frequency (LF) current signal injection, were discussed. The basic principles of rotor position self-sensing using these current signal injection and the key techniques in implementation were presented and the simulation models for sensorless vector control systems of a permanent magnet synchronous motor (PMSM) were established using two proposed rotor position estimation methods. Comparative simulation study of the fluctuating HF current signal injection and LF current signal injection was investigated, and draw the conclusions that the saliency-tracking scheme using fluctuating HF current signal injection possesses simpler configuration and better speed-adjustable performance both in static and dynamic.

• Periodical: Advanced Materials Research (Volume 722)
• Pages: 361-368
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.722.361
• Online since: July 2013
• Authors: Yu Dong Li, Bo Zhou, Ying Liu, Cheng Liang Zhao
• Keywords: Current Signal Injection, PMSM, Rotor Position Self-Sensing, Saliency-Tracking

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