A rotor design of a BLDC motor used for reciprocating compressor considering demagnetization

作者：You Yong Min; Kim Dae Kyong; Kwon Byung Il^*

来源：International Journal of Applied Electromagnetics and Mechanics, 2010, 33(1-2): 689-695.

DOI：10.3233/JAE-2010-1174

• Demagnetization
• BLDC
• Reciprocating Compressor
• ferrite magnet
• FEM

This paper presents the design of a reliable rotor shape of a BLDC motor used for reciprocating compressor considering demagnetization. Three types of rotor shape are proposed for BLDC motor and a proper rotor shape is selected by characteristic analysis using the 2D finite element method (FEM). To verify the accuracy of the analysis results, a prototype was built and tested. In order to design a reliable rotor shape against the demagnetization of the ferrite magnet, the demagnetization analysis is performed according to variation of design variables of the ferrite magnet using the 2D FEM. As a result, the BLDC motor with the developed rotor shape showed good performance to resist partial demagnetization.

• 出版日期2010