Investigation of Common-Mode Current Elimination in Four-Wire Inverter-Fed Motor

Zhao, Zhao; Horn, Benjamin; Leidhold, Roberto

doi:10.1109/peac.2018.8590271

Cited by 10 publications

(1 citation statement)

References 12 publications

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“…A limitation of this technique is that it requires access to the neutral point of the machine, but accessing the neutral point has been proved to be useful for sensorless rotor position estimation [34, 36] and fault tolerant strategies [37]. The proposed topology, which requires a connection of the neutral point with the middle of the DC‐link, has already been used for rotor position estimation [38] and shows some advantages for common‐mode current reduction [39].…”

Section: Introductionmentioning

confidence: 99%

Stator inter‐turn faults diagnosis in induction motors using zero‐sequence signal injection

Otero

Barrera

Bossio

et al. 2020

IET Electric Power Applications

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This study presents a strategy for stator inter-turn faults diagnosis in induction motors (IMs) operating under timevariable load and time-variable speed conditions. The strategy consists in injecting a zero-sequence high-frequency signal in order to analyse variations in the stator inductances. Incipient stator inter-turn faults are detected by a simple signal processing of the derivatives of the currents. A feature of the strategy is that the zero-sequence high-frequency signal is generated by the inverter that feeds the machine, without modifying the standard space vector modulation of the IM-drive. Experimental results show that faults representing <1% of the stator winding can be detected, as well as the phase location of the fault, validating this proposal.

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