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http://dx.doi.org/10.6113/TKPE.2017.22.3.216

Eliminating Method of Estimated Magnetic Flux Offset in Flux based Sensorless Control Algorithm of Surface Mounted PM Synchronous Motor  

Kim, Hack-Jun (Dept. of Control & Instrumentation Engineering, Korea Nat'l Univ. of Transportation)
Cho, Kwan-Yuhl (Dept. of Control & Instrumentation Engineering, Korea Nat'l Univ. of Transportation)
Kim, Hag-Wone (Dept. of Control & Instrumentation Engineering, Korea Nat'l Univ. of Transportation)
Lee, Kwang-Woon (Electrical and Control Eng., Mokpo Nat'l University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.22, no.3, 2017 , pp. 216-222 More about this Journal
Abstract
The rotor position of a PM synchronous motor is commonly estimated from the mathematical model for the sensorless control without rotor position sensors. For the magnet flux-based rotor position estimator in the stationary reference frame, the magnet flux estimator for estimating rotor position and speed includes the integrator. The integrator in the magnet flux estimator may accumulate the offset of the current sensors and the voltage drift. This continuous accumulation of the offset may cause the drift and overflow in the integrator, such that the estimated rotor position and speed may fail to track the real rotor position and speed. In this paper, the magnet flux estimator without integrator is proposed to avoid overflow in the integrator. The proposed rotor position and speed estimator based on magnet flux estimator are verified through simulation and experiment.
Keywords
PM synchronous motor; Sensorless; Magnet flux estimator; Rotor position estimator; Offset;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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