Influence Of Different Excitation Winding Structure Of Dual-excited Synchronous Generator On The Air-gap Flux Density Waveform

Dual-excited synchronous generator is a new synchronous generator,which has a high stability and can change the power angle of the generator by excitation adjustment.Two finite element models which can analyze the performance of excitation were created in this thesis.And we try to figure out whether the different excitation winding structures and exciting styles of Dual-excited generators have an effect on flux density waveform.The research contents are as follows:1)Try to establish step finite element models which can analyze the exciting performance,and analyzes the influence of different motor excitation windings structures under different excitation ways on air gap magnetic field.2)The calculation method of air gap flux density and no-load EMF waveform of Dual-excited synchronous generator is described.3)The influence of different excitation winding structure on the air gap magnetic flux in different excitation modes is analyzed,which provides a reference for the design of Dual-excited synchronous generator winding structures.4)The air gap magnetic fluxes of the d and q axis excitation windings are analyzed,and the influence of different slot distributions on the air gap magnetic fluxes is revealed,which provides a reference for the design of the distribution of the excitation winding trenches of the biaxial excitation generator.