Abstract
Keywords:
Lundell Alternator, Claw-Pole Alternator, Switched-Mode Rectifier, Semi-Bridge Rectifier, Boost Rectifier, Brushless Alternator, Brushless Exciter, Contactless Power Transfer.
Abstract:
This paper focuses on the use of switched-mode power electronics to enhance the power, efficiency, and transient performance of Lundell alternators. The application of power electronics in conjunction with both the alternator field and armature are explored. It is shown that the combination of a foil field winding and improved field control electronics enable substantial improvements in field packing factor and alternator output power. Likewise, application of switched-mode rectification with a redesigned armature and appropriate controls enable improved alternator power and efficiency. The application and limitation of power electronics to enhance transient performance and load dump suppression are also overviewed.