Abstract
The new bearingless doubly salient electro-magnetic machine has the advantages of the robust structure and reduced coupling between the suspension force and torque control due to the independent dc winding in stator. The angular position detection is eliminated for suspension force control which improves the reliability. The operation principle and air-gap flux density distribution are analyzed. The suspension force characteristics are investigated and verified both by the mathematical model and finite-element method in depth. The experimental results are given to verify the analysis.
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