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Method for producing high-voltage generator and stator with stator winding in circular cross section

A generator stator and stator winding technology, which is applied in the manufacture of motor generators, the shape/style/structure of winding conductors, and the shape/style/structure of winding insulation, etc., can solve the problems of complicated equipment, large eddy current loss and rated output voltage. Small problems, etc., to achieve the effect of high overall efficiency, improved availability, and improved reliability

Inactive Publication Date: 2008-07-02
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low rated output voltage, large eddy current loss, complex equipment and the limitations of the existing cooling system in the existing engine, the present invention proposes a high-voltage generator with a circular section stator winding and its stator manufacturing method

Method used

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  • Method for producing high-voltage generator and stator with stator winding in circular cross section
  • Method for producing high-voltage generator and stator with stator winding in circular cross section
  • Method for producing high-voltage generator and stator with stator winding in circular cross section

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specific Embodiment approach 1

[0021] Specific embodiment 1: This embodiment is described in conjunction with Figures 1 to 11. This embodiment is composed of a stator and a rotor; the stator is composed of a frame 1, an iron core 2, a stator winding 3 and a cooling water pipe 4; the section of the stator winding 3 is Round; stator winding 3 is composed of conductor 3-1, inner semiconducting layer 3-2, insulating layer 3-3, and outer semiconducting layer 3-4 from inside to outside, and conductor 3-1 is a single-strand wire or twisted Multi-strand wires, the outer semiconductor layer 3-4 is connected to the ground potential; there is a wave-shaped winding slot 2-1 along the radial direction of the iron core 2; the stator winding 3 is placed in the wave-shaped winding slot 2-1 of the iron core 2, The stator winding 3 is in clearance fit with the wave-shaped winding slots 2-1; the iron core 2 yoke is evenly opened with at least four circular cooling slots 2-2 in the circumferential direction, and the cooling wat...

specific Embodiment approach 2

[0022] Specific embodiment 2: This embodiment is described in conjunction with Fig. 4 to Fig. 7. The difference between this embodiment and specific embodiment 1 is that the insulating layer 3-3 of the stator winding 3 placed in the wave-shaped winding slot 2-1 is evenly wound on the on the inner semiconductor layer 3-2. Other compositions and connection methods are the same as those in Embodiment 1.

specific Embodiment approach 3

[0023] Specific embodiment 3: This embodiment is described in conjunction with Fig. 8 to Fig. 11. The difference between this embodiment and specific embodiment 1 is that the stator winding 3 placed in the wave-shaped winding slot 2-1 is divided into m groups, m≥2, The thickness of the insulating layers 3 - 3 of the stator winding 3 from the first group to the mth group distributed from the center of the iron core 2 to the circumferential direction increases gradually. Other compositions and connection methods are the same as those in Embodiment 1. The insulation 3-3 of the stator winding 3 in this embodiment adopts step-by-step winding, because the induced voltage of the generator gradually increases from the neutral point of the stator winding to the end of the line, so that the cables produce different voltages along the winding direction. electrical stress. Therefore, thinner insulation is used in the first few turns of the winding, and the thickness of the insulation is ...

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Abstract

The invention discloses a high-voltage generator with a circular section stator winding and a stator manufacture method, which relates to a filed of a motor. The invention solves the problems of small rating output voltage, large eddy current loss and complex devices which exist in the current generators. The stator winding section of the generator is circular; the generator comprises a conductor, an internal semiconductor layer, an insulation layer and an external semiconductor layer from the internal to the external in sequence; the conductors is one or a plurality of hinged wires; a wave winding groove is opened along a radial direction of an iron core; the stator winding is arranged in the wave winding groove of the iron core to cooperate at the interval; at least four circular dissipation grooves are evenly opened in a circumferential direction of an iron core yoke, in which dissipation water pipes are arranged. The stator manufacture method includes the processes as follows: firstly, the iron core is arranged on a generator base; secondly, one end of the stator winding is penetrated from one end of the wave winding groove of the iron core to the other end of the wave winding groove of the iron core; according to the requirements of a pitch, the end of the stator winding is penetrated back and the penetration is carried out repeatedly; thirdly, the dissipation water pipes are introduced into the circular dissipation groove; lastly, the pipes are enlaced in order. The invention has the advantages of simple structure, high stability and simple cooling system.

Description

technical field [0001] The invention relates to the field of generators, in particular to a manufacturing method of a high-voltage generator and a stator thereof. Background technique [0002] The traditional large-scale rotating electrical machine stator bar is composed of a rectangular cross-section conductor with high dielectric strength epoxy as the main insulation. In order to reduce eddy current loss, each strand must be insulated from each other and transposed along the bar in a complex shape. In order to homogenize the electric field and avoid corona, complex measures must be taken in the area of ​​the winding ends. The traditional design of the generator makes it difficult for the rated output voltage of the generator to exceed 30-35kV (currently the highest in my country is 20kV). On the contrary, the transmission voltage of the power grid is gradually increased, and the highest has reached 800kV at present. [0003] In traditional medium and small motors, air is...

Claims

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Application Information

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IPC IPC(8): H02K3/04H02K3/12H02K1/20H02K3/34H02K3/30H02K3/487H02K15/00H02K15/085
Inventor 戈宝军梁艳萍陶大军
Owner HARBIN UNIV OF SCI & TECH
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