Electric machine for high magnetic reversal frequencies

Electric machine with at least one primary part and at least one secondary part, said secondary part and said primary part being movable with respect to each other by the force of magnetic fields, with an air gap that is arranged between said primary part and said secondary part, said machine being a synchronous machine with permanent excited poles or in accordance with the reluctance principle, said secondary part has poles with a pole pitch in direction of movement, and said primary part has coils made of a conductive material, said coils lying partially in at least one soft magnetic body which together form primary part poles, and the magnetic flux in said primary part and in said secondary part flowing predominantly transversally to the direction of movement, said primay part poles and said secondary part poles having extensions in direction of movement, and said primary part poles and said secondary part poles having extensions perpendicular to the direction of movement,

• wherein said extensions perpendicular to the direction of movement are shorter in relation to said extensions in direction of movement, said primary part poles act reciprocally with the poles of said secondary part in running tracks, said primary part poles and said secondary part poles are arranged alternately in direction of movement within a running track, and at least two of said running tracks are arranged side by side perpendicular to the direction of movement.