An Analytical Approach to Design the PM in PMAREL Motors Robust Toward the Demagnetization

作者：Bianchi Nicola^*; Mahmoud Hanafy^*

来源：IEEE Transactions on Energy Conversion, 2016, 31(2): 800-809.

DOI：10.1109/TEC.2016.2523556

• Analytical analysis
• finite element analysis
• motor design
• permanent magnet assisted synchronous reluctance machine
• synchronous reluctance machine

In the permanent magnet (PM)-assisted reluctance motors, low-energy PM, such as Ferrite PM, is used to get a cheap rotor. As far as the design choices are concerned, the PM width has to be selected so as to achieve the desired air-gap flux density at no-load condition and the PM thickness has to be selected to avoid the demagnetization of the PM under full-load conditions. This paper presents a practical analytical approach to compute PM width and thickness according to a given air-gap flux density and stress on the PM itself. Two approaches based on a complete model and a simplified model are considered and compared. As an example, a 36-slot 4-pole machine is designed. Finite element analysis confirms the results achieved by means of both analytical analyses.

• 出版日期2016-6