Instantaneous power as a medium for the signature analysis of induction motors

Łęgowski, S.; Ula, A.H.M.S.; Trzynadlowski, A.M.

doi:10.1109/28.511648

Cited by 151 publications

(40 citation statements)

References 13 publications

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“…Besides power production, monitoring the voltage and current in each phase can give useful indications of the operational status, such as mechanical stability in the generator [12][13][14]. The translator position measurement was included for position and speed reference.…”

Section: Measurement Objectivementioning

confidence: 99%

Offshore Measurement System for Wave Power—Using Current Loop Feedback

Ulvgård¹,

Kamf²,

Leijon³

2016

Electronics

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This paper presents the design and testing of a measurement system for wave power generators. The work is part of a project to build a robust and cheap measurement system for offshore monitoring of wave power farms. Due to the harsh offshore environment, low accessibility and high cost for installation and maintenance, it is of key importance to minimize power consumption, complexity and cost of each measurement unit. For the first prototype, the objective was to measure voltage, current and translator position inside the linear wave power generator. For this, two printed circuit boards (PCBs) were developed, using a two wire current loop transmitter setup. They were tested separately and in a three phase setup inside a wave power generator during onshore tests. To ensure stability, speed and accuracy in the signal transfer, the PCBs were tested for linearity, frequency response and step response. In addition, power consumption was measured, for operational time evaluation. Results show good agreement between expected and measured performance, with an input range of ±1560 V and ±420 A for alternating current measurements and a bandwidth of 10 kHz and 7 kHz, for voltage and current measurements, respectively. The power consumption was measured to 0.5 W for each measurement unit, at 24 V feed.

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Section: Measurement Objectivementioning

confidence: 99%

Offshore Measurement System for Wave Power—Using Current Loop Feedback

Ulvgård¹,

Kamf²,

Leijon³

2016

Electronics

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“…In [18], it was demonstrated that the instantaneous power, defined by the product of the currents and voltages, has definite advantages since it carries more information than current or voltage signals individually. Both the IAP and IRP have been investigated as an indicator to detect various faults for induction machines [19,20].…”

Section: Introductionmentioning

confidence: 99%

Stator Turn Fault Detection by Second Harmonic in Instantaneous Power for a Triple-Redundant Fault-Tolerant PM Drive

Wang

Griffo

et al. 2018

IEEE Trans. Ind. Electron.

109

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including the URL of the record and the reason for the withdrawal request. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICSAbstract-Fast and reliable detection of stator faults is of key importance for fail-safe and fault tolerant machine drives in order to immediately trigger appropriate fault mitigation actions. The paper presents a detailed analytical and experimental analysis of the behavior of a closed loop controlled permanent magnet machine drive under inter-turn fault conditions. It is shown that significant 2nd harmonic components in the dq voltages, currents, instantaneous active power (IAP) and reactive power (IRP) are generated during turn fault conditions. The analyses further show that the increase of the 2nd harmonic in IAP and IRP during fault conditions is comparatively higher than that of voltage and current, making them ideal candidates as turn fault indicators. A turn fault detection technique based on 2nd harmonic in IAP and IRP is implemented and demonstrated for a triple redundant, fault tolerant permanent magnet assisted synchronous reluctance machine (PMA SynRM) drive. The effectiveness of the proposed detection technique over the whole operation region is assessed, demonstrating fast and reliable detection over most of the operating region under both motoring and generating mode.Index Terms-Fault tolerant, turn fault, fault detection, fault mitigation, 2 nd harmonic, active power, reactive power.

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“…-According to the physical quantity analysed for monitoring the rotor condition; diagnosis methods based on the measurement of vibrations [3], fluxes on search coils [4], axial flux on coils concentric with the shaft [5], air-gap torque [6], instantaneous power [7], residual voltages during the disconnection [8] or stator currents [1,[9][10][11] have been proposed; the methods based on the measurement of the stator current have drawn most of the attention in the industrial environment, since this signal can be obtained directly from the already existing current transformers, avoiding the installation of any specific probe or any interruption on the operation of the machine.…”

Section: Introductionmentioning

confidence: 99%