Implementation of fractional slot concentrated winding technique to large salient-pole synchronous generators & development with permanent magnets

What is it about?

• The importance of using the FSCW technique in large SPSGs is emphasized. • 2.4 MVA, 15 stator slots, two-layers per slot, 8 poles, 6.6 kV/50 Hz SPSGs with FSCW technique is designed and developed with PMs. • The mechanism of reducing magnetic saturation by FSCW and additional PMs is investigated. • A detailed comparison between conventional SPSGs and FSCW SPSGs is presented. • Important machine design parameters including winding factor, magnetic field, harmonics, THDs, losses and efficiency are calculated.

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Why is it important?

Very useful guidelines for engineers faced with the necessity to reduce the saturation of the generator poles and optimize the machine without reducing its efficiency are presented.