Induction Machine Dynamics Analysis

This chapter presents the root locus of the induction machine model with the associated damping ratio when the parameters of frequency \(f_s\) , slip s, stator resistance \(R_s\) and rotor resistance \(R_r\) are varying. The analysis indicates the fast and slow modes of the induction machine dynamics. Investigation is conducted on how these fast and slow modes are coupled and how the coupling affects the system dynamic performance. Furthermore, it is also discovered in this chapter that the steady-state equivalent circuit model has incorrect dynamic characteristics, and subsequently improvement is presented.