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This paper presents the sizing and the comparison of two synchronous machines. The purpose is to design a high temperature dedicated machine with the same performance and volume as a permanent magnet machine. To compare the machines, torque has been chosen as a reference indicator and not the efficiency which will be not so good for the high temperature machine. A salient pole wound rotor is chosen with anodized aluminum tape as windings. Works presented should be considered as preliminary studies leading to the conception of a prototype.