Title :
High-speed axial-flux permanent-magnet generator with coreless stator
Author :
Sadeghierad, M. ; Lesani, H. ; Monsef, H. ; Darabi, A.
Author_Institution :
Electr. & Comput. Eng. Dept., Univ. of Tehran, Tehran, Iran
Abstract :
High-speed axial-flux generators (HSAFGs) with coreless stators are regarded as high-power-density, small-size, high-efficiency machines for use in distributed power generation systems (as microturbines). This paper presents a modelling procedure for such generators with details. The ratio of inner to outer diameter (lambda) in axial-flux machines is considered in the same way that the ratio of length to diameter is considered in radial-flux (conventional) machines. The optimized lambda is determined for an HSAFG with three rotors and two stators by careful consideration of the output voltage and efficiency variations versus lambda. It is concluded that lambda plays an important role in the HSAFG and requires careful attention when the machine is designed.
Keywords :
distributed power generation; permanent magnet generators; rotors; stators; axial-flux machine; coreless stators; distributed power generation systems; high-power-density; high-speed axial-flux permanent-magnet generator; microturbines; radial-flux machine; Cooling; Distributed power generation; Frequency; Magnetic cores; Permanent magnet motors; Permanent magnets; Power generation; Power system modeling; Rotors; Stator cores; axial flux; coreless stator; high-speed generator; lambda; modelling; permanent magnet;
Journal_Title :
Electrical and Computer Engineering, Canadian Journal of
DOI :
10.1109/CJECE.2009.5291209
