Comparison of transient and steady-state simulation methods on internal faults of salient-pole synchronous machine

Transient analysis of internal faults in the salient-pole synchronous machine has been seldom discussed so far. In this paper, the mathematical model of the salient-pole synchronous machine, which comprises a group or differential equations with time-variant coefficients, is established using the multi-loop method. Two solution methods, the transient solution and the steady-state solution, are applied to work out the mathematical model. The numerical solutions based on both methods are verified separately by experiments on a 12 kW machine. The paper also compares the two sets of results, pointing out the advantages and limitations of corresponding methods in internal fault analysis