Advantage of Increasing the Number of Airgap Surfaces in Synchronous Linear Actuators

Pierre-Emmanuel Cavarec (1) , Hamid Ben Ahmed (1) , Bernard Multon (2) , Laurent Prevond (1)

1 SATIE - Systèmes et Applications des Technologies de l'Information et de l'Energie
2 SATIE SETE - Systèmes d'Energie pour les Transports et l'Environnement

This paper presents an realistic comparison of several electromagnetic architectures forhigh force density actuators. Firstly a simple classification of synchronous actuators is presented. Four equivalent architectures are chosen and modelized by saturable reluctance schemes. For each size and each architecture, dimensions are optimized in order to maximize the force-volume ratio. This optimization is done with fixed mecanical airgap. A simple thermical model is used. Results shows that the optimal number of airgaps increase with the dimensions. Moreover, Global coil architecture performances increase faster than other architectures. Several examples of global coil multiairgaps actuators are presented in order to illustrated the theoretical result.

Mots clés: Linear actuator; high thrust density; multiairgap

Domaines: Energie électrique

Pierre-Emmanuel Cavarec, Hamid Ben Ahmed, Bernard Multon, Laurent Prevond. Advantage of Increasing the Number of Airgap Surfaces in Synchronous Linear Actuators. Electromotion 2001, Jun 2001, BOLOGNA, Italy. pp.251-256. ⟨hal-00674235⟩