The differences on the rotor structure of interior and surface permanent magnet synchronous generator are analyzed and a comparison that several typical rotors structure can provide the maximal area of magnetic flux is made in this dissertation. On this basis

the generator rotor structure is selected. The performance characteristics of permanent magnet synchronous generator are analyzed and studied. The electromagnetic scheme of 2. 935 MW high speed permanent magnet synchronous generator is calculated. The generator no-load

load and short circuit characteristics are analyzed with the determination of electromagnetic computational scheme using finite element simulation software. The voltage total harmonic distortion

cogging torque

no-load flux leakage coefficient

power factor and electromagnetic torque are calculated. After verification

the performance meets the design requirements.