Modeling and Analysis of Stator Interturn Fault Location Effects on Induction Machines

IEEE Trans. Power Electron.

et al. 2019

“…Hence, the turn fault current after TSC will be different if it happens in different coil locations as shown in Fig. 1 [21,26]. And it is influenced by the currents in the healthy sets.…”

Section: A Intra-phase Turn Faultmentioning

confidence: 99%

Investigation Into Fault-Tolerant Capability of a Triple Redundant PMA SynRM Drive

IEEE Trans. Power Electron.

et al. 2019

“…The total MMFs over sets DEF and GHI can be similarly expressed as in (6). The variables are defined similarly as above.…”

Section: General Machine Modellingmentioning

confidence: 99%

“…The resultant MMF can be deduced accordingly as a combination of the AC component and offset component for each set. In the extreme condition where the currents in each set are all different, the MMF of each set can still be expressed by (5) and (6).…”

Section: General Machine Modellingmentioning

confidence: 99%

“…In addition, in order to optimize the output capability in fault condition, accurate fault modelling is necessary to guide machine design and control strategies leading to higher efficiency and power density [5]. Fault modelling also facilitates the development of diagnostic techniques [6]. Thus, the fault modelling of the drive system is worth investigation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A General Modeling Technique for a Triple Redundant 3 × 3-Phase PMA SynRM

IEEE Trans. Ind. Electron.

et al. 2018

Abstract-A general modelling technique is proposed for a triple redundant 3x3-phase permanent magnet assisted synchronous reluctance machine (PMA SynRM). The magneto-motive force (MMF) of the machine is divided into three parts each associated with one 3-phase set. The MMF of each 3-phase set can be described by four variables: d-and q-axis components of the currents, the rotor angle and an MMF offset component which captures the mutual coupling between three 3-phase sets. Therefore the complete machine behavior in all operating conditions can be captured by means of 4-dimensional (4D) tables, which store the flux linkage and torque information. The 4D tables are produced by finite element (FE) analysis for one 3-phase set. As a result, the machine behavior can be predicted by interpolating the 4D tables. The model is capable of representing healthy and fault operations, including unequal current operation in three 3-phase sets, and offers great flexibility for performance assessment, post fault control and fault detection. Its effectiveness is verified by extensive FE simulation and experimental tests in different operation modes. Index Terms-Fault tolerant, fault modelling, permanent magnet assisted synchronous reluctance machine, multi-phase machine, magneto-motive force, MMF reconstruction.

show abstract

“…Among these failure modes, inter-turn fault might be considered as a worst fault case since it usually only involves few turns, resulting in a very low impedance of the short-circuited path. As a result, large fault current is induced, producing excessive heat which further degrades the insulation between the winding and lamination and eventually leading to complete failure [4]. The high turn fault current can also cause irreversible demagnetization of the magnets [5].…”

Section: Introductionmentioning

confidence: 99%

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

IEEE Trans. Ind. Electron.

et al. 2018

100