Physics-Based Phase Variable Model of Machines and Transformers From Electromagnetic Field Computations

the physics-based phase variable model has been developed for several types of machines and transformers. The parameters (inductance/flux linkage) of the physics-based phase variable model were determined using the solutions of field computation to actually reproduce their variations during the machine operation. The developed physics-based phase variable model has the advantage over the conventional phase variable model in its accuracy, and it has the advantage over the circuit-field coupled procedure in its speed. These advantages enable the developed model be suitable for performing high accuracy simulation of power systems in real time and studying machine control strategies as well as product development.