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Dynamoelectric machine having air/liquid cooling

A technology for motor generators and wind generators, applied in cooling/ventilation devices, wind power generation, electromechanical devices, etc., can solve problems such as limited cooling effect

Inactive Publication Date: 2013-02-20
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cooling effect of this type of design is also limited, because the part of the stator that is washed by the cooling water from all sides only accounts for a small part of the total length of the housing

Method used

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  • Dynamoelectric machine having air/liquid cooling
  • Dynamoelectric machine having air/liquid cooling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] figure 1 In a partial longitudinal section, a motor generator, particularly for a wind generator, is shown.

[0027] The stator 1 whose lamination group is composed of partial lamination groups 2 has a winding system not shown in detail, which is arranged in a groove so that a winding end 16 is formed on the end face of the lamination group of the stator 1. The rotor 3 is arranged in the radial direction spaced apart from the stator 1 by an air gap not shown in detail, and the rotor is positioned on the shaft 7 in a torsion-proof manner, in particular thermally press-fitted or connected to the shaft by adjusting a spring. connection.

[0028] In this exemplary case, the rotor 3 is designed as a short-circuit rotor and for this reason has short-circuit bars 6 which are electrically conductively connected to each other on the end faces of the rotor 3 via short-circuit rings 5.

[0029] The rotor 3 also has a lamination group, which is divided into partial lamination groups 4. ...

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Abstract

The invention relates to dynamoelectric machine, in particular a wind generator, comprising a stator (1), which is designed as a laminated core and has a winding system, which forms winding heads (16) on the end faces of the stator (1), and a rotor (3), which is designed as a laminated core and which is connected to a shaft (7) in a rotationally fixed manner, wherein the stator (1) and the rotor (3) are arranged in a housing, wherein the shaft (7) is supported by means of bearings (9), which are arranged in bearing shields (8), wherein the laminated core of the stator (1) and / or rotor (3) has axially extending cooling channels (15), wherein the bearing shields (8) form a closed interior together with the housing, said interior having at least one closed inner cooling circuit, wherein the housing has an outer jacket (12) and an inner jacket (19) facing the stator (1); and arranged at a distance from the outer jacket in some sections, wherein the outer jacket (12) and the inner jacket (19) combined form a cooling jacket (11), in particular a liquid cooling jacket, the axial extension of which equals at least the axial extension of the laminated core of the stator (1).

Description

Technical field [0001] The invention relates to a motor generator with a stator and a rotor, which has a closed cooling circuit. Background technique [0002] In order to cool the motor generator, gas, especially air and liquid, are used as cooling media. In order to achieve effective cooling, a combination of these cooling principles is also designed in the motor generator. [0003] Patent document DE 299 13 314U1 discloses a motor with a housing, which has a stator and a rotor and a water cooling device, wherein the laminated group of the stator is shrink-fitted into the housing and laid flat over the entire length of the group. In the shell. A cooling spiral is arranged between the inner cover and the outer cover, wherein the air guiding outer cover radially designed on the outside is a closed system. [0004] The disadvantage is that the internal circulating air flow is guided to the air guide housing by means of an internal fan, which guides the internal air flow through the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K5/20
CPCH02K9/10H02K9/19H02K7/1838Y02E10/725H02K5/20H02K9/08H02K5/18Y02E10/72H02K5/207H02K9/00H02K9/12H02K9/04H02K5/203
Inventor 奥利弗·梅明杰弗里德里克·舍贝尔
Owner SIEMENS AG
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