Abstract:
This paper presents the study about a novel structure hybrid excitation synchronous
generator (HESG), which consists of a permanent magnet part as the major component, and an
electrically-excited part as the assistant component, and hence possesses the advantages of both
the PM and electrically-excited generators. To accurately determine the machine parameters,
three-dimensional (3-D) finite element analysis is conducted to solve the magnetic field
distribution, which is quite complicated and 3-D, particularly in the electrically-excited part. An
equivalent electrical circuit is derived to calculate the generator performance, such as the
external characteristic or the relation between the output voltage and the load. A HESG
prototype has been constructed and the experimental results validate the theoretical calculations.
