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This paper discusses the problem of a sensorless control method for permanent magnet synchronous machines named Direct Flux Control (DFC). Direct Flux Control provides its users with the angle of the total flux in the machine at all working points, including standstill. The Direct Flux Control signals are a mirror for the current inductivity and flux distribution in a permanent magnet synchronous...
In this paper, a signal-based strategy is proposed for interturn short-circuit fault detection and isolation in Permanent Magnet Synchronous Machines (PMSMs). Usually, external disturbances or other faults may produce similar symptoms on signal-based fault detection strategies, thus producing false alarms. To avoid this disadvantages, the proposed strategy is based on measurement of the voltages at...
This paper proposes a novel alternative scheme for permanent magnet synchronous machine (PMSM) health monitoring and multi-faults detection using direct flux measurement with search coils. Phase current spectrum is not used for analysis and therefore it is not influenced by power supply introduced harmonics any more. In addition, it is also not necessary to specify load condition for accurate diagnosis...
This paper discusses a reluctance-dependent back electromotive force (EMF) model for encoderless vector driven permanent magnet synchronous machines (PMSM) compared to well known, non reluctance-dependent back EMF models. Established PMSM could have considerable varieties in direct and quadrature inductances. So it makes sense to consider this behaviour in an extended back EMF model. On closer examination...
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