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Condition monitoring in permanent magnet synchronous machines has gained interest due to the increasing use in applications such as electric traction and power generation. Particularly in wind power generation, non-invasive condition monitoring techniques are of great importance. Usually, in such applications the access to the generator is complex and costly, while unexpected breakdowns results in...
The rotor asymmetry introduced by broken bars produces modulation of the stator currents, variations in the mean torque and oscillation at two times the slip frequency in the electromagnetic torque. The magnitude of the stator current modulation can be used to diagnose problems on the rotor. However, some load conditions or power quality problems lead to similar effects on the IM currents and torque...
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