Design of Inductive Power Transmission into the Rotor of an Externally Excited Synchronous Machine
Year: 2014
Type: article
Abstract: Almost all drive concepts in the field of electric mobility that are currently pursued, use a permanent-magnet synchronous motor (PSM) or an asynchronous motor (ASM). The externally excited synchronous machine (EESM) type is rare, but first automotive product series exist in which the excitation power is transmitted using slip rings. On the subject of externally-excited synchronous motors, especially in combination with contactless transmission of the excitation power, there are barely any publications in the field of electric mobility. Therefore, this work, which is supported by the Bavarian Research Foundation, focuses on the research and development of a contactless system to transfer the energy needed for the external excitation on the rotor. The disadvantages of the slip ring solution in EESM are to be overcome by an inductive energy transfer to the rotor. The challenges in the design of inductive transmission is that the secondary side (rotor) rotates at high speeds in the range of 0...12000 min -1 , the space occupied by the energy transfer device must be kept small, the energy efficiency of the transmission has to be very high and the design needs to be very robust to meet the automotive requirements.
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2759490392