Mounting device for rotating electric machines
First Claim
1. A mounting device for reducing short-circuiting forces transmitted from a stator core to a stator body in a rotating electric machine wherein the stator core is formed of a number of packs, each of which includes at least one metal sheet each having two identical grooves, a wedge member for cooperation with the grooves to join together said metal sheets, and wherein the stator body comprises a plurality of beams each having at least one through hole, each connected to a wedge member, wherein windings are drawn through slots in the stator, the windings comprising a high-voltage cable and the mounting device comprises a connector arranged through each through-hole in each beam and secured in the wedge member in order to connect each beam and wedge member, wherein the cross-sectional area of the hole at right angles to its longitudinal axis being greater than the cross-sectional area of the connector at right angles to the longitudinal axis of the connector, permitting sliding between the wedge member and the beam in the event of short-circuiting.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to a mounting device (80) for reducing short-circuiting forces that are transmitted from a stator core to a stator body in a rotating electric machine comprising a stator with windings drawn through slots in the stator, wherein the stator core is composed of a number of packs (82), each of which includes a number of metal sheets, or of a number of metal sheets, each pack (82) or metal sheet having two identical grooves (84) arranged for cooperation with wedge members (86) designed to join together packs (82) or metal sheets, and wherein the stator body comprises beams (88), each connected to a wedge member (86). The mounting device (80) also comprises a connector (90) arranged through the beam (88) and secured in the wedge member (86) in order to connect the beam (88) and wedge member (86) in such a manner as to permit sliding between the wedge member (86) and the beam (88) in the event of short-circuiting. The windings also consist of high-voltage cable (10).
262 Citations
15 Claims
- 1. A mounting device for reducing short-circuiting forces transmitted from a stator core to a stator body in a rotating electric machine wherein the stator core is formed of a number of packs, each of which includes at least one metal sheet each having two identical grooves, a wedge member for cooperation with the grooves to join together said metal sheets, and wherein the stator body comprises a plurality of beams each having at least one through hole, each connected to a wedge member, wherein windings are drawn through slots in the stator, the windings comprising a high-voltage cable and the mounting device comprises a connector arranged through each through-hole in each beam and secured in the wedge member in order to connect each beam and wedge member, wherein the cross-sectional area of the hole at right angles to its longitudinal axis being greater than the cross-sectional area of the connector at right angles to the longitudinal axis of the connector, permitting sliding between the wedge member and the beam in the event of short-circuiting.
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15. A rotating electric machine, comprising:
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a stator core having stator slots, the stator core formed from a number of packs, each pack including at least two metal sheets having two identical grooves;
a stator body including a plurality of beams, each beam having at least one through-hole and being connected to a wedge member by a mounting device, the wedge members being configured to cooperate with the grooves to join the number of packs together; and
a winding of a high-voltage cable drawn through the stator slots, wherein the mounting device is configured to reduce short-circuiting forces transmitted from the stator core to the stator body and includes a connector arranged through the through-hole and secured in the wedge member to connect the wedge member to the beam, a cross-sectional area of the through-hole at a right angle to a longitudinal axis of the through-hole being greater than a crossed-sectional area of the connector at a right angle to a longitudinal axis of the connector such that sliding between the wedge member and the beam is permitted during short-circuiting.
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Specification