**8. References**


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544 Induction Motors – Modelling and Control

*nrb* Number of rotor bars *p* Number of motor poles

*s* Per unit slip

**8. References** 

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*Irp* PM current amplitude at *fr* frequency *Iload* AM current amplitude at *fload* frequency, *Ji(Ispp)* ith-order Bessel function of the first kind *ksp,* Fault severity coefficient for broken bars

*P(t*) Analytical signal from the space vector

*(t)* Phase of the complex analytical signal

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*kr* Fault severity coefficient for dynamic eccentricity *magH(t*) Absolute value of the complex analytical signal

*ϕ* Phase angle of PM in reference to AM at broken bars

*Ira* AM current amplitude at *fr* frequency, dynamic eccentricity fault indicator

Bellini, A., Filippeti, F., Tassoni, C. & Kliman, G.B. (2001). Quantitative evaluation of induction motor broken bars by means of electrical signature analysis. *IEEE Transactions* 

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