Unlock instant, AI-driven research and patent intelligence for your innovation.

Electric machine with independent rotor cooling device, generator arrangement and wind turbine

A rotor cooling and generator technology, applied in wind turbines, machines/engines, cooling/ventilation devices, etc., can solve the problem of inability to change, and achieve the effect of effective stator cooling and effective cooling

Inactive Publication Date: 2019-09-20
FLENDER GMBH
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage here is that the field weakening is fixed at the operating point and thus cannot be changed during operation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electric machine with independent rotor cooling device, generator arrangement and wind turbine
  • Electric machine with independent rotor cooling device, generator arrangement and wind turbine
  • Electric machine with independent rotor cooling device, generator arrangement and wind turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] In the figures, identical and functionally identical elements have the same reference signs.

[0032] figure 1 An electric machine 1 according to the prior art is shown in a sectional side view. The electric machine 1 comprises a stator 2 with windings. The winding head 4 of the winding can be seen here. Furthermore, the electric machine 1 comprises a rotor 3 , which is rotatable relative to the stator 2 . The rotor 3 includes a plurality of permanent magnets 5 . The motor 1 can be designed as a permanent magnet synchronous motor. The electrical machine 1 is preferably used as a generator, in particular in a wind power plant.

[0033] The electric machine 1 also includes a stator cooling device 6 for cooling the stator 2 . In this case, the stator cooling device 6 includes a water jacket cooling device 7 , which surrounds the stator 2 on the peripheral side. Furthermore, the electrical machine 1 includes a rotor cooling device 8 which serves to cool the rotor 3 a...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an electric machine (2) comprising a stator (2) and a rotor that can rotate relative to the stator (2), the rotor (3) having a plurality of permanent magnets (5), also comprising a rotor cooling device (8) for cooling the rotor (3), wherein the rotor cooling device (8) comprises at least one cooling device (23) for providing a cooling air flow, said rotor cooling device (8) comprises a control device (22) which is designed to control at least one cooling device (23) for adjusting a coolant power provided by the cooling air flow.

Description

technical field [0001] The invention relates to an electric machine having a stator and a rotor rotatable relative to the stator, wherein the rotor comprises a plurality of permanent magnets. Furthermore, the electric machine has a rotor cooling device for cooling the rotor, wherein the rotor cooling device has at least one cooling device for providing a cooling air flow. Furthermore, the invention relates to a generator arrangement with such an electric machine. Finally, the invention relates to a wind power installation with such a generator arrangement. Background technique [0002] The focus here is on permanent magnet machines used as generators. For example, such a motor might be used as a generator in a wind power facility. It may be the case during motor operation that the motor runs above its rated speed. This is the case, for example, when the motor is installed in a wind power facility and causes high rotational speeds due to gusts of wind. In particular, whe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02K9/18H02K9/12H02K11/25H02K7/18H02K11/04
CPCH02K7/1838H02K9/12H02K9/18H02K11/04H02K11/25F03D80/60H02K9/16H02P6/06
Inventor 罗兰·泽伊赫菲斯尔
Owner FLENDER GMBH