Browsing by Author "Siphepho, Nosimilo"
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- ItemDesign and optimization of a large scale grid connected wound rotor synchronous machine(Stellenbosch : Stellenbosch University, 2023-12) Siphepho, Nosimilo; Garner, Karen; Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering.ENGLISH ABSTRACT: The main focus of this work is the cost-efficient design of a 3 MW, geared, medium speed wound rotor synchronous machine for grid-tied wind applications. Following this concept, a fractional slot non-overlapping winding is employed. To deal with the adverse effects of such a winding, methods of mitigating magneto-motive force harmonics are studied. The effects of phase shifting, flux barrier insertion, and pole shaping on the machine performance of the 18 slots, 16 poles, double layered wound rotor synchronous machine are explored. The machine is also optimized to make it grid compliant. Finally, the effects of phase shifting are tested on a 3 KW prototype.