Electromechanical properties of a disc‐type salient‐pole brushless DC motor with different pole numbers

• Marian Lukaniszyn ^[1] ; Mariusz Jagiela ^[1] ; Rafal Wrobel ^[1]
  1. [1] Department of Electrical Engineering and Automatic Control, Technical University of Opole, Polonia
• Localización: Compel: International journal for computation and mathematics in electrical and electronic engineering, ISSN 0332-1649, Vol. 22, Nº 2, 2003, págs. 285-303
• Idioma: inglés
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• Resumen

  • A brushless, permanent magnet, three‐phase disc‐type salient‐pole DC motor with co‐axial flux in the stator is considered. Electromechanical properties of a basic eight‐pole motor are compared with those for a 16‐pole one of the same volume, in order to contrast the two potential candidates for variable‐speed, low‐cost drives. As a basis of the comparative analysis, 3D FEM magnetic field modelling and circuit analysis considering an electronic commutator are employed. Increasing the number of poles results in unfavourable raising in the switching frequency. The eight‐pole motor construction has been shown in simulations to have higher efficiency and lower power losses than its 16‐pole counterpart.