Title :
Axial-field synchronous machine with homopolar flux in the airgap for a flywheel accumulator
Author :
Bernard, Nicolas ; Ahmed, Hamid Ben ; Multon, Bernard
Author_Institution :
Lab. of Electricity, Signals & Robotics, Ecole Normale Superieure de Cachan, Bruz, France
Abstract :
A new axial-field synchronous machine designed for a flywheel accumulator is presented herein. The armature and field windings fixed in the airgap are made with double-face printed circuits. A specific armature layout provides a sine-distributed MMF and solves the problem of crossing the ends of the winding. A 2D semi-analytical model at the mean radius, using surface permeances, is then developed. Afterwards, inductances, torque and eddy current losses are calculated using this model and compared with experimental results.
Keywords :
air gaps; eddy current losses; flywheels; inductance; machine theory; machine windings; synchronous machines; torque; 2D semi-analytical model; air gap; armature; axial-field synchronous machine; double-face printed circuits; double-face printed winding; eddy current losses; field windings; flywheel accumulator; homopolar flux; inductances; mean radius; sine-distributed MMF; surface permeance; torque; Coils; Conductors; Flywheels; Machine windings; Power generation; Printed circuits; Synchronous machines; Synchronous motors; Torque; Wind energy generation;
Conference_Titel :
Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the
Conference_Location :
Pittsburgh, PA, USA
Print_ISBN :
0-7803-7420-7
DOI :
10.1109/IAS.2002.1042720
