2012
DOI: 10.6113/jpe.2012.12.4.604
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Abstract: This paper presents a comparative study of position sensorless control schemes based on back-electromotive force (back-EMF) estimation in permanent magnet synchronous motors (PMSM). The characteristics of the estimated back-EMF signals are analyzed using various mathematical models of a PMSM. The transfer functions of the estimators, based on the extended EMF model in the rotor reference frame, are derived to show their similarity. They are then used for the analysis of the effects of both the motor parameter … Show more

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Cited by 47 publications
(24 citation statements)
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“…Note from (6) that the back-EMFs in the stationary reference frame are AC signals; thus, phase lagging exists between the actual and estimated back-EMFs caused by the intrinsic phase delay of the back-EMF estimator. This phase lagging increases as the rotor speed increases; thus, the performance of the sensorless control is often degraded at high speeds when using the stationary reference frame model-based back-EMF estimator [17].…”
Section: A Selection Of Sensorless Control Strategy Considering Perimentioning
confidence: 99%
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“…Note from (6) that the back-EMFs in the stationary reference frame are AC signals; thus, phase lagging exists between the actual and estimated back-EMFs caused by the intrinsic phase delay of the back-EMF estimator. This phase lagging increases as the rotor speed increases; thus, the performance of the sensorless control is often degraded at high speeds when using the stationary reference frame model-based back-EMF estimator [17].…”
Section: A Selection Of Sensorless Control Strategy Considering Perimentioning
confidence: 99%
“…6 shows that the estimated rotor speed () and positionˆr ˆr  () are obtained from   using the phase-locked loop (PLL) type estimator. [17,18] Fig . 5 shows that the expression of the estimated back-EMF is obtained as follows:…”
Section: B Back-emf-based Sensorless Speed/position Estimator In Thementioning
confidence: 99%
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“…Nevertheless, this scheme can be successfully applied to many applications such as compressors that operate at a relatively high speed and have a simple starting-up process [14,15]. This paper focuses on the back-EMF based scheme for sensorless position detection because for using the scheme in consumer electronics.…”
Section: Introductionmentioning
confidence: 99%
“…For example, the rotor speed and position can be estimated based on the stator voltage equation of the AC motor [3], reference model of the AC motor [4], state observer [5], back EMF [6], the Kalman filtering [7], nonlinear control [8], signal injection [9] and fuzzy control [10].…”
Section: Introductionmentioning
confidence: 99%