ZSV spectrum-based detection of im rotor dissymmetry immunity to false alarms

This paper presents a comprehensive study of new tool used to detect rotor asymmetries in induction motors, which operate in different types of operating conditions and different loads. The proposed approach is performed by tracking the amplitude of the most sensitive harmonics in the spectrum of the line neutral voltage called also the Zero Sequence Voltage (potential difference between the null point of the supply voltage system and the neutral of the star connection of IM stator winding), using a dynamic acquisition rate based on machine frequency supply. To assess detection accuracy under the various severity levels of the faults, two supply conditions are investigated: (i) Motor supplied by network fed and (ii) Motor supplied by inverter fed. Results obtained from experimental tests are presented to validate the study.

---

W artykule opisano nowe narzędzie do wykrywania asymetrii wirnika w silniku indukcyjnym. W opisanej metodzie śledzone są wartości harmonicznych w napięciu Zero Sequence Voltage (różnicy między punktem zerowym zasilania I punktem zerowym uzwojenia stojana połączonego w gwiazdę.

---

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).