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An air gap armature motor

An armature and air gap technology, which is applied in the fields of high-capacity high-temperature superconducting motors for ship propulsion, high-temperature superconducting wind generators, and air-gap armature motors, can solve the problems of limited heat dissipation capacity and long thermal path, and achieve increased The effect of reducing the number of conductors, reducing circulation and eddy current losses, and reducing contact thermal resistance

Active Publication Date: 2016-11-02
中国船舶重工集团公司第七一二研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the heat source (coil) of the motor is far away from the cooling medium, the heat dissipation process must be insulated through the winding, and the thermal circuit is long, resulting in limited heat dissipation capacity. Generally, a motor with a low heat load is used.

Method used

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  • An air gap armature motor
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  • An air gap armature motor

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Example 1: Such as Figure 1-7 Shown is a basic embodiment of the invention. An air-gap armature motor, including a stator, a rotor and a bearing system, the stator is composed of a machine base and an air-gap armature, and the air-gap armature is composed of an iron core punch 3, a coil support 4, a coil 2 and a slot 1; the core punch 3 is an annular structure with a dovetail groove in the axial direction; the coil support 4 is an isosceles trapezoidal wedge-shaped strip embedded in the dovetail groove; the coil 2 is a belt The multi-turn shuttle structure with cooling channels and transposition is co-located and supported by the iron core punch 3 and the coil support 4 .

Embodiment 2

[0028] Example 2: is a further example. The difference from Embodiment 1 is that the coil 2 of the air gap armature motor includes a coil lead wire 21 and a coil cooling pipe joint 22 . The cooling method of the coil 2 is liquid internal cooling, and the cooling medium is deionized water or transformer oil. Coil 2 is a double-layer, transposed multi-turn formed coil. It is another embodiment when the coil 2 is a single layer. The coil 2 is a hollow copper conductor with a small wire gauge. The cross section of the hollow copper conductor is a square on the outside and a circle on the inside. It can be selected as a square on the outside, or a circle on the outside, or a square on the outside is another embodiment. The material of the coil support 4 is a composite material that is non-magnetic, non-conductive, high-strength and excellent in thermal conductivity, and may also be plastic.

Embodiment 3

[0029] Example 3: is yet another further embodiment. The difference from Embodiment 2 is that the coil 2 is a combination of a small-gauge hollow copper wire and a small-gauge solid copper wire. An outer circle and an inner circle, or an outer circle and an inner square are other embodiments.

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Abstract

The invention discloses an air-gap armature motor, which includes a stator, a rotor and a bearing system. The stator is composed of a machine base and an air-gap armature. Composition; the iron core punch is an annular structure with a dovetail groove in the axial direction; the coil support is an isosceles trapezoidal wedge strip embedded in the dovetail groove; the coil is a cooling channel and The transposed multi-turn shuttle structure is co-located and supported by the iron core punch and the coil support. The invention has the advantages of remarkable cooling effect and reliable coil fixation. Because the iron teeth are eliminated, non-magnetic materials are used to fix the coil structure, so that the armature winding can maximize the use of the air gap space, increase the number of conductors, and improve the performance of the motor. At the same time, because the coil adopts a shuttle-shaped structure with cooling channels, the heat transfer path is reduced and the contact thermal resistance is reduced, thereby improving the cooling efficiency and greatly improving the cooling of the armature winding.

Description

technical field [0001] The invention belongs to the field of motors, and specifically relates to an air gap armature motor, which is a motor suitable for high frequency, high field strength and high heat load, and is especially suitable for high power, low speed, compact structure, high power density and low operating cost. High-capacity high-temperature superconducting motors and high-temperature superconducting wind power generators for ship propulsion. Background technique [0002] Since the 1960s, superconducting motors have been well developed. In this type of motor, the use of superconducting windings can generate a strong magnetic field in the air gap of the motor. The iron teeth used to increase the air gap flux density in conventional motors will be saturated, which limits the improvement of the air gap flux density. It is no longer applicable. In the design of superconducting motors, iron teeth are canceled and non-magnetic materials are used to fix the structure....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K55/00H02K15/04H02K3/22
Inventor 周勇郑军董琦贾海媛钮小军
Owner 中国船舶重工集团公司第七一二研究所
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