초록 ▼

Known flat winding layers that can be prefabricated and inserted into soft magnetic bodies insufficiently utilize the available space in the grooves and winding overhang of polyphase machines and thus increase the volume and weight of the machine. A new winding design allows high power and force den

Known flat winding layers that can be prefabricated and inserted into soft magnetic bodies insufficiently utilize the available space in the grooves and winding overhang of polyphase machines and thus increase the volume and weight of the machine. A new winding design allows high power and force densities to be obtained, thanks to the utilization of the whole available space, and are economic to produce. For that purpose each winding layer (4d) is composed of several conductor lanes (22-24) whose number corresponds to the number of phases. The height of the conductor lanes is reduced at the points (25-33) where they intersect, due to the fact that the conductors are mutually offset, and thus pass over each other inside the layer. By variably adapting the width of the conductor the space in the winding overhang through which the magnetic flow is directed in the soft magnetic body is utilized. The space available in the winding overhangs is completely utilized thanks to double winding layers of which each second layer mirrors the first and is offset by a pole pitch with respect to the first. The winding is suitable for motors and generators whose volume and weight can be advantageously reduced.

대표청구항 ▼

Polyphase electric machine with prefabricated winding layers comprising a soft magnetic body with grooves, said grooves having a length, a width and a depth, said machine further having a plane surface parallel to a planar gap, parallel to the plane surface and within said grooves are arranged the w

Polyphase electric machine with prefabricated winding layers comprising a soft magnetic body with grooves, said grooves having a length, a width and a depth, said machine further having a plane surface parallel to a planar gap, parallel to the plane surface and within said grooves are arranged the winding layers, at least one of said winding layers consisting of at least two conductor lanes of different phases, each of said conductor lanes having a cross section, wherein the conductor cross sections vary on both sides outside the soft magnetic body, and wherein said polyphase electric machine further having a conductor lane of a winding layer, said conductor lane having in partial sections arranged outside the soft magnetic body a smaller cross section parallel to the groove depth than in sections lying inside the soft magnetic body.