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Étude des pertes fer dans deux types de moteurs linéaires à aimant mobile.

Study on iron loss in two kinds of moving-magnet linear motors.

Numéro : pap. 1453

Auteurs : WANG L., XIONG C., WU Y., et al.

Résumé

Linear motors are widely used in cryogenic fields to drive Stirling-type cryocoolers. Generally the Joule heat loss associated with copper lead is considered as the main loss in motors while the iron loss is ignored at a lower frequency operation, not only because it’s regarded as small enough but also it’s difficult to measure or calculate. This paper introduces an experimental method to measure the iron loss for linear motors. Two kinds of moving-magnet linear motors have been tested, one is known as single coil and magnet linear motor, and the other as double coils and magnets linear motor. Dependence of iron loss on frequency and displacement are investigated. Results show that there is a 1.6 power exponent relation between iron loss and frequency in the single-coil moving-magnet linear motor, and its iron loss come to be the same as copper loss at 75 Hz, it even grows to 1.65 times of copper loss at 100Hz. As for the double coils and magnets linear motor, there is a 1.3 power exponent relation between iron loss and frequency, and its iron loss percentage is only 15% at 120 Hz compared with 68% in the single-coil linear motor. Iron loss is proved to be significant in linear motors especially at higher frequency.

Documents disponibles

Format PDF

Pages : 5 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Study on iron loss in two kinds of moving-magnet linear motors.
  • Identifiant de la fiche : 30007585
  • Langues : Anglais
  • Source : 2012 Purdue Conferences. 21st International Compressor Engineering Conference at Purdue.
  • Date d'édition : 16/07/2012

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