Design Considerations of Permanent Magnet Transverse Flux Machines

作者：Lu Kaiyuan^*; Rasmussen Peter Omand; Ritchie Ewen

来源：IEEE Transactions on Magnetics, 2011, 47(10): 2804-2807.

DOI：10.1109/TMAG.2011.2146758

• Inductance
• leakage flux
• permanent magnet
• transverse flux machine

Permanent magnet transverse flux machine (PMTFM) is well known for its high torque density and is interested in various direct-drive applications. Due to its complicated 3-D flux components, design and design optimization of a PMTFM is more difficult and time consuming than for radial flux electrical machines. This paper addresses two important design considerations for PMTFM-the influence of permanent magnet leakage flux, which plays an important role in the determination of machine output torque, and the leakage inductance. A new simple method to provide a quick estimation of the armature leakage inductance is proposed, avoiding use of complicated 3-D equivalent reluctance network model to estimate the circumferential armature leakage flux component, and the pole face fringing flux component. Analysis results are supported by 2-D, and 3-D finite element (FE) analysis results, and measurement results on a prototype surface-mounted PMTFM.

• 出版日期2011-10