A nonlinear model for studying synchronous machine dynamic behavior in phase coordinates

A new model for studying synchronous machine dynamic behavior is developed and implemented in the virtual test bed (VTB) simulation environment. The nonlinear synchronous machine model uses quantities in phase coordinates. The advantages of phase-domain modeling for electric machines are discussed. The new model was applied in the study of start-up transients of a synchronous motor. The simulation results are in agreement with those obtained from a standard d-q model, thus validating our model. This paper also demonstrates that symbolic modeling tool can greatly simplify the process of developing complex nonlinear device simulation models