Force density limits in low-speed permanent-magnet machines due to saturation
Journal article, 2005

This paper discusses the practical limits imposed by magnetic saturation for the force density in low-speed permanent-magnet electric machines. The force density dependence on current density and slot depth is investigated with the aid of finite-element modeling. For saturation reasons, shallow slots are more favorable for achieving high force densities. However, for thermal reasons, deeper slots become favorable. Therefore, an optimum slot depth that maximizes the force density for each current density level exists. The maximum allowable slot depth range for four low-speed applications has been identified for a given maximum motor diameter.

Author

Prakashraj Kasinathan

Chalmers, Energy and Environment, Electric Power Engineering

Anders Grauers

Chalmers, Energy and Environment, Electric Power Engineering

Essam Hamdi

Chalmers, Energy and Environment, Electric Power Engineering

IEEE Transactions on Energy Conversion

0885-8969 (ISSN)

Vol. 20 1 37-44

Subject Categories

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TEC.2004.837302

More information

Created

10/7/2017