Synchronous Motors and Generators
Most design calculations can be performed assuming a coordinate system that moves synchronously with the rotor, using Opera-2d/ST and Opera-3d/TOSCA.
Under abnormal conditions (unbalanced load/supply, power system faults etc.), the negative sequence currents can be modelled using a time-varying field with static geometry approach using Opera-2d/AC and Opera-3d/ELEKTRA-SS to produce a twice supply frequency travelling field in the stator.
To determine equivalent circuit parameters, a frequency response can be computed using Opera-2d/AC and Opera-3d/ELEKTRA-SS.
For more information on synchronous motor and generator design within Opera or the machines environments please visit our applications site at: motor-design-software.com