Performance Evaluation of Self-Excited Cage And Cageless Three Phase Synchronous Reluctance Generator
Journal Title: International Journal of engineering Research and Applications - Year 2017, Vol 7, Issue 3
Abstract
The concept of generating electrical power using reluctance generator is yet to be fully exploited, which will necessitate its development into industrial standard. This research aims to facilitate the development through a comparative evaluation of the performance of caged and cageless reluctance generators. A three-phase synchronous reluctance generator was modeled using existing information and its performance with or without a cage rotor was analyzed. Evaluation of the machines’ performance was carried out at both steady and dynamic states using MATLAB. The results show that a self-excited cage rotor synchronous reluctance generator yielded a power of 0.25 p.u compared to the cage-less rotor that yielded 0.2 p.u at an excitation of 62 μF; while on further excitation using capacitance of 110µF, the cage rotor yielded a higher power of 0.9p.u whereas the cageless rotor could not excite beyond 62 μF. This implies that the cage rotor generator has the ability to excite at capacitance values high enough to circulate rotor current in the machine windings due to the existence of remnant flux, magnetic saturation and rotor geometry. The removal of damper cage of a synchronous reluctance machine allows for more modifications of the rotor geometry which include reduction in the quadrature axis flux path and hence the quadrature axis reactance which ultimately improves the machine performance. This shows that a cage rotor generator can be deployed where higher power is required.
Authors and Affiliations
A. O. Ojo, F. I. Izuegbunam, M. Olubiwe
Keywords
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