2015/10/15 by Jonas Kristiansen Nøland, Karina Hjelmervik, Urban Lundin · 25 citations
Engineering · Materials Science · #Electric Motor Design and Analysis #HVDC Systems and Fault Protection #Magnetic Properties and Applications #Exciter #Armature (electrical engineering) #Thyristor #Rectification #Electromagnetic coil #Torque ripple #Control theory (sociology) #Rectifier (neural networks) #Topology (electrical circuits) #Permanent magnet synchronous generator #Ripple #Magnet #Torque #Electrical engineering #Engineering #Computer science #Physics #Direct torque control #Voltage #Induction motor
paper · doi:10.1109/tec.2015.2480884
published in IEEE Transactions on Energy Conversion 31(1), 314-322 (Institute of Electrical and Electronics Engineers)
openalex publication_date 2015/10/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/26
The thyristor bridge rectifier has proven to be a reliable solution regarding control of excitation equipment for synchronous generators. However, in rotating brushless exciters, the diode rectifier is the dominant topology on the shaft. In order to improve the step response of rotating exciters, one could put a thyristor bridge rectifier on the rotating part and control the firing angle remotely from a stationary controller. This paper compares different multiphase configurations of permanent magnet synchronous machines as a rotating exciter and discusses the possibility to reduce the torque ripple by selecting the appropriate rectification topology. The paper also explains the implications of the self and mutual inductances of the armature windings for the performance of the exciter.