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http://dx.doi.org/10.6113/TKPE.2016.21.5.449

A Simplified Analysis Approach on the Rotor Position Detection Error in Sensorless Interior Permanent Magnet Brushless DC Motor Drives  

Lee, Kwang-Woon (Dept. of Electronic Engineering, Mokpo Nat'l Maritime University)
Park, Tae-Sik (Dept. of Electrical and Control Eng., Mokpo Nat'l University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.21, no.5, 2016 , pp. 449-452 More about this Journal
Abstract
This paper presents a simplified analysis on the rotor position detection error in sensorless interior permanent magnet brushless DC motor (BLDCM) drives, wherein terminal voltage sensing based on the back-electromotive force (back-EMF) zero-crossing point detecting circuitry is employed. The effect of a rotor saliency on the back-EMF's zero-crossing point detection is analyzed using the extended EMF-based voltage equation of the interior permanent BLDCM in a stationary reference frame, and thus the overall analysis is considerably simplified compared to the conventional one. Simulation results are provided to verify the effectiveness of the proposed method.
Keywords
Interior permanent magnet BLDCM(Brushless DC Motor); Sensorless control; Rotor position detection error;
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