Tytuł pozycji:
Research on the operational performance of high speed permanent magnet generator with controlled rectifier in distributed generation
The uncontrolled rectifier and controlled rectifier which use fixed switching
frequency control strategy are applied usually during the working of a high-power high-
speed permanent magnet generator (HSPMG). Even for the controlled rectifier, it will
generate harmonics. The electromagnetic performance of the HSPMG is also affected by
these harmonics. In this paper, the influences of the fixed switching frequency control
strategy on a HSPMG were studied. Based on the Fourier theory, the harmonic currents
of the generator were analyzed, and the change of harmonic distribution range and current
total harmonic distortion (THD) were obtained. By using an indirect field-circuit coupling
method, the influences of the fixed switching frequency control strategy on the losses
and torque of the generator were analyzed. The relations between the switching frequency
and the losses and torque of the generator were obtained, and the change mechanism of
the loss was revealed. The obtained conclusions can provide reference for the optimized
choice of the switching frequency of the distributed generation system with the HSPMG.
It can also provide support for the HSPMG electromagnetic structural optimization and the
optimization of the loss and harmonic on the system level.