The Impact of the System Operating Point on the Accuracy of the AC Slip-Ring Motor Speed Estimation

Poljugan, Alen; Kolonić, Fetah; Slutej, Alojz

doi:10.1109/epepemc.2006.4778587

Cited by 1 publication

(2 citation statements)

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“…WRIMs have been reported to exhibit strong spectral signatures in stator electrical signals [9–12]. These machines, commonly used in the wind, cement, mining and water industries, are yet to receive significant attention where SSB sensorless speed estimation techniques are concerned [13]. Efforts have been made to utilise the accessibility of WRIM rotor windings to achieve sensorless speed estimation based on rotor voltage zero‐crossing detection [13, 14].…”

Section: Introductionmentioning

confidence: 99%

“…These machines, commonly used in the wind, cement, mining and water industries, are yet to receive significant attention where SSB sensorless speed estimation techniques are concerned [13]. Efforts have been made to utilise the accessibility of WRIM rotor windings to achieve sensorless speed estimation based on rotor voltage zero‐crossing detection [13, 14]. However, in addition to introducing the need for additional sensing this method can be compromised in no‐load and partial‐load conditions.…”

Section: Introductionmentioning

confidence: 99%

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Sensorless speed estimation in wound rotor induction machines by spectral search of the stator phase power signal

Tshiloz

Vilchis-Rodriguez

Djukanović

et al. 2016

IET Electric Power Applications

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This paper investigates the feasibility of utilising the stator phase power signal to establish sensorless speed estimation schemes in wound rotor induction machines (WRIMs). To this end, the authors derive and validate closed form expressions defining the possible power signal spectral content containing rotor speed information. Based on these, two novel sensorless speed estimation techniques are proposed: the first enables supply frequency independent speed estimation in WRIM extended slip applications, while the second facilitates estimation in a wide operating speed range for scalar controlled WRIM applications based on a sliding-window search of the power spectrum. The proposed techniques are underpinned by a dichotomous search enabled spectral processing algorithm and shown to deliver an increase in attainable real-time estimation rate without compromising estimation accuracy. The performance of reported schemes is assessed and validated in real-time laboratory experiments.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%