| 摘要 |
Electrical machines with a radial air gap field, especially low-power EC deadend feeders, having the advantage of individually wound poles. The trapezoidal cross section of the slot and small slot openings in the direction of the air gap make it difficult to produce a compact winding. According to the invention the body of the electric machine which forms the individual poles is made of soft magnetic segments. The segments are preferably made of axially stacked metal sheets having indentations on the edges forming the wall of the slot. This enables the conductor wire to be guided in a precise manner during the winding of individual poles. At the air gap the pole shoes cover almost all of the perimeter and at the opposite end they form adjacent pole segments, preferably recesses in which retention pins, once mounted, are inserted axially and ensure radial fastening. In multiphase machines wound and unwound T-segments alternate in the direction of the width of the slot. X-segments have a pole surface which is fractionally increased according to the number of phases. The invention enables highly efficient electric drive units to be produced at low cost.
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