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CN-122001166-A - Manufacturing method, equipment and medium for coil with tap

CN122001166ACN 122001166 ACN122001166 ACN 122001166ACN-122001166-A

Abstract

A method for manufacturing the coil with taps includes such steps as providing two normal coils, cutting the first normal coil from a given position, shaping at joint position to form a half modified coil A with the first and the second cross sections, cutting the second normal coil from a given position, shaping at joint position to form a half modified coil B with the third and the fourth cross sections, combining the half modified coil A and the half modified coil B to form test coil C, embedding them in slots of stator core, connecting the joints of the second and the fourth cross sections in one-to-one correspondence, perforating on base or end cover, and leading out the joints of the first and the third cross sections from outside of motor via base or end cover holes to form a reserved tap.

Inventors

  • YANG HUIQIANG
  • LUO YINGLU
  • FENG SHOUZHI
  • LI YI
  • ZHANG FUSEN
  • XU KAICHENG
  • MING SHUAISHUAI
  • LI HAO
  • HE SIYUAN

Assignees

  • 中车株洲电力机车研究所有限公司

Dates

Publication Date
20260508
Application Date
20241108

Claims (10)

  1. 1. The manufacturing method of the coil with the tap is characterized by comprising the following steps: Providing two normal coils, wherein the two normal coils comprise an upper layer edge, a lower layer edge and a connector for connecting the end parts; cutting the first normal coil from a designated position, and shaping the joint part of the two end connecting wires to two sides to form a half-modified coil A with a first section and a second section; Cutting the second normal coil from a designated position, and shaping the two sides of the joint part of the two end connecting wires to form a half-handle modified coil B with a third section and a fourth section; Combining the half modified coil A and the half modified coil B to form a test coil C, and respectively embedding the test coil C into a stator core slot; Connecting a plurality of joints of the second section and the fourth section at the end part according to a one-to-one correspondence; and (3) forming a hole on the base or the end cover, and leading out a plurality of joints of the first section and a plurality of joints of the third section from the outside of the motor through the base hole or the end cover hole to form a reserved tap.
  2. 2. The method of manufacturing a tapped coil as defined in claim 1, wherein the plurality of joints of the first section and the third section are each connected to a reserved tap by welding.
  3. 3. The method of manufacturing a tapped coil as defined in claim 1, wherein each tap is provided with an insulating layer.
  4. 4. The method of manufacturing a tapped coil as defined in claim 1, wherein the step of embedding into the stator core slots includes embedding the modified coil manually or mechanically, turn-by-turn.
  5. 5. A method of manufacturing a tapped coil as defined in claim 1, wherein a die is used to conform the lengths of the turns of conductor during the shaping of the modified half-coil a and the modified half-coil B.
  6. 6. The method of manufacturing a tapped coil as defined in claim 1, wherein the test coil C is made of a heat-resistant and insulating material.
  7. 7. The method of manufacturing a tapped coil as defined in claim 1, wherein the first section and the third section comprise seven joints and the second section and the fourth section comprise six joints.
  8. 8. The method of manufacturing a tapped coil as defined in claim 1, wherein the normal coil is a multi-layer winding structure.
  9. 9. An apparatus comprising a processor and a memory, the processor being configured to implement the steps of the method of making a tapped coil as defined in any one of claims 1 to 8 when executing a computer program stored in the memory.
  10. 10. A computer readable storage medium having stored thereon a computer program, characterized in that the program when executed by a processor realizes the steps of the method of manufacturing a tapped coil according to any of the preceding claims 1 to 8.

Description

Manufacturing method, equipment and medium for coil with tap Technical Field The invention relates to the field of rail transit, in particular to a manufacturing method, equipment and medium of a coil with a tap. Background In the field of rail transit, a traction motor is used as a core power component of a train, and the reliability of the product is directly related to the running safety of the train. In failure modes of traction motors, inter-turn short circuit faults are more and more paid attention to in industry in recent years, and particularly, the inter-turn short circuit faults are reflected in permanent magnet synchronous traction motors, once the inter-turn short circuit faults occur, the damage degree of the inter-turn short circuit faults is far worse than that of asynchronous traction motors due to counter electromotive force, so that more and more scientific researchers are devoted to great efforts to study mechanisms and diagnosis treatment measures in the inter-turn short circuit fault modes. Because the stator windings of the traction motor are all formed windings, each coil comprises a plurality of turns of conductors, once the traction motor is in turn-to-turn short circuit in the actual running process of the train, the process time is very short, the key parameter mutation of the motor is fast, the electric parameter characteristics of the turn-to-turn short circuit are difficult to capture under the working condition, and further, the mechanism research under the turn-to-turn short circuit evolution is difficult, so that a test prototype specially used for the turn-to-turn short circuit research needs to be manufactured, the prototype can realize the switching of the motor from a normal running state to the turn-to-turn short circuit state, the traditional scheme for conducting the turn-to-turn short circuit treatment of the coil in advance is obviously not applicable, the motor with taps needs to be manufactured, namely, each turn of the coil is led out of the motor, namely, one tap is reserved outside the motor, the motor is realized through controlling the connection between different taps outside, the switching of the motor from the normal running state to the turn-to-turn short circuit state is realized, meanwhile, the short circuit between different turns can be realized, and the parameter change in the evolution process of the turn-to the motor from the normal state to the turn-to the turn short circuit is monitored at the moment. When each turn of the coil is led out to be tapped, the conventional scheme is to cut the coil from the end part, and each turn is welded to be tapped, but the problems are that the length of a joint is short after the end part is cut, the number of turns of the coil is large, the space of the end part is insufficient after welding and insulating wrapping are finished, and the coil cannot be embedded and outgoing. Disclosure of Invention The invention provides a manufacturing method, equipment and medium of a coil with a tap, which aim to solve the problem of insufficient space for directly welding a package insulation at a cut part, lead a joint out of a motor to perform welding and package insulation operation, greatly reduce the size of the end part and realize normal coil inserting and coil out. To achieve the above object, a first aspect of the present invention provides a method for manufacturing a tapped coil, including the steps of: Providing two normal coils, wherein the two normal coils comprise an upper layer edge, a lower layer edge and a connector for connecting the end parts; cutting the first normal coil from a designated position, and shaping the joint part of the two end connecting wires to two sides to form a half-modified coil A with a first section and a second section; Cutting the second normal coil from a designated position, and shaping the two sides of the joint part of the two end connecting wires to form a half-handle modified coil B with a third section and a fourth section; Combining the half modified coil A and the half modified coil B to form a test coil C, and respectively embedding the test coil C into a stator core slot; Connecting a plurality of joints of the second section and the fourth section at the end part according to a one-to-one correspondence; and (3) forming a hole on the base or the end cover, and leading out a plurality of joints of the first section and a plurality of joints of the third section from the outside of the motor through the base hole or the end cover hole to form a reserved tap. Further, the joints of the first section and the third section are connected to the reserved tap in a welding mode. Further, each tap is provided with an insulating layer. Further, the step of embedding the modified coil into the stator core slot comprises the step of embedding the modified coil into the stator core slot turn by a manual or mechanical means. Further, in the shaping process of the transformation hal