STEADY-STATE PERFORMANCE OF ASYNCHRONIZED SYNCHRONOUS MACHINES
MetadataShow full item record
In recent years, the need of Variable-Speed Constant-Frequency generating schemes has drawn increasing attention. Such schemes have some distinct advantages over the Constant-Speed Constant-Frequency schemes, particularly for the wind or hydro power generations. The asynchronized synchronous machines have been recognized as one of the most versatile and economical Variable-Speed Constant-Frequency schemes. This thesis presents a generalized mathematical model for the asynchronized synchronous machines, which can be used to analyse the transient as well as the steady-state conditions of both the salient-pole and nonsalient-pole types. A phasor representation of this model is also developed for the analysis of the steady-state operation of the asynchronized synchronous machines. This approach makes the analysis more understandable and the calculations more simple, particularly for the nonsalient-pole machines. Using this phasor representation, the steady-state operation characteristics of nonsalient-pole asynchronized synchronous machines, their static stability limits and reactive power control are investigated. To verify the theoretical analysis conducted in this thesis, experimental investigations were carried out on a microalternator. The comparison between the experimental results and the calculated results using the developed models shows a good agreement between them.