Frequency-dependent simple harmonic model of synchronous machines

In this letter, a detailed harmonic model of synchronous machines is established based on previous work by X.P. Yhang (1995) and X.P. Yhang et al. (1999). Then a frequency-dependent simple harmonic model (FSHM) of synchronous machines is derived directly from this detailed Park equation-based synchronous machine model. Finally the connections and differences between this FSHM and widely used simple harmonic model (SHM) are given through theoretical analysis.