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Permanent magnet type electric rotating machine and wind turbine electric power generation system

一种永久磁铁、旋转电机的技术，应用在风能发电、风力发动机、风力发动机的控制等方向，能够解决不能避免轴方向的增加等问题，达到提高冷却效率的效果

Inactive Publication Date: 2006-04-05
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As an improvement measure, connect multi-stage small-capacity rotating electrical machines, but this cannot avoid the increase in the axial direction

Method used

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  • Permanent magnet type electric rotating machine and wind turbine electric power generation system
  • Permanent magnet type electric rotating machine and wind turbine electric power generation system
  • Permanent magnet type electric rotating machine and wind turbine electric power generation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] figure 1 It is a cross-sectional view of a generator end portion of a 6-pole, 72-slot permanent-magnet rotating electrical machine according to Embodiment 1 of the device of the present invention. This machine is suitable for wind power generators of several MW level, allowing the speed of 1000-2000rpm. The stator 1 is a distributed winding stator in which coils 11 are wound around stator teeth 12 in a distributed manner. The coil 11 is arranged so as to be wound with a 3-phase winding of UVW, and is arranged so as to have 6 poles in a 72-slot electrical system. In addition, the coil 11 is arranged as an upper coil 8 and a lower coil 9 in the stator slot 13 between the stator teeth 12 and is constituted by a coil end 10 . In Example 1, the coil 11 is wound in what is called a full-pitch winding, on the stator slot 13 coming out of the lower coil 9 of slot #1 of #1 to #72 slots suitably attached in a counterclockwise direction The coil 11 is set to enter the upper coi...

Embodiment 2

[0044] Figure 16 It is a cross-sectional view of a generator end of a 6-pole, 72-slot permanent magnet rotating electrical machine according to Embodiment 2 of the present invention. The stator 100 is a distributed winding stator in which coils 11 are distributed and wound on stator teeth 12 . The coil 11 is arranged so as to be wound with a 3-phase winding of UVW, and is arranged so as to have 6 poles in a 72-slot electrical system. In addition, the coil 110 is arranged as the upper coil 8 and the lower coil 9 in the stator slot 13 between the stator teeth 12 and is constituted by the coil end 10 . In Embodiment 1, the coil 11 is wound in what is called a short-pitch winding, the coil coming out of the lower coil 9 of the #1 slot suitably attached in the counterclockwise direction to #1 slot #1 to #72 slots of the stator slot 13 11, is set to enter the upper coil 8 of the #11 slot that adds 10 less than 12 obtained by dividing the slot number 72 by the pole number 6. In t...

Embodiment 3

[0046] Figure 17 It shows an example of applying the rotating electric machine of the present invention to a wind power generation system. The rotary electric machine 111 shown in Embodiment 1 and Embodiment 2 is connected to a windmill 112 via a speed increasing gear 113 and installed in a windmill nacelle 114 . Furthermore, the rotary electric machine 111 is connected to an electric power grid 116 via a power source 115 to enable power generation operation. In addition, in the present invention, wind power is used as a power source, but water wheels, engines, turbines, etc., for example, can be adequately applied. It is most effective in the case of wind power generation where the installation place of the rotating electric machine is strictly limited. In addition, the windmill 112 and the rotary electric machine 111 may be directly connected.

[0047] The wind power generator rotary electric machine in the above-mentioned embodiment has the advantage that it can be cool...

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PUM

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Abstract

A permanent magnet type electric rotating machine comprises a stator having a distributed winding and a permanent magnet rotor, wherein the permanent magnet rotor is provided with a wind passage in an axial direction thereof.

Description

technical field [0001] The invention relates to a permanent magnet type rotating electrical machine and a wind power generation system. Background technique [0002] The introduction of wind power has grown rapidly in recent years, and the demand for larger capacity is gradually increasing. When increasing the capacity, for example, even if the efficiency is high, the loss is large in absolute value. Therefore, when the volume of the rotating electrical machine is increased in order to make the heat generation density about the same as that of a small-capacity machine, the weight increases. Considering the characteristics of wind power generation, the rotating electrical machine is installed on the upper part of the tower about 100m above the ground, so it is necessary to hang a heavy object at a height of 100m, so it is desirable. Minimize weight to keep construction costs down. [0003] Therefore, it is necessary to reduce the volume and increase the heat generation den...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/32H02K1/27H02K9/04
CPCH02K7/1838H02K1/2706Y02E10/725F03D9/002H02K1/30H02K1/32H02K9/06F05B2260/20H02K7/183F03D9/25F03D80/60Y02E10/72F03D80/601
Inventor 木村守井出一正饭塚元信水谷修二藤垣哲朗岩重健五田川久人丸野祐策
Owner HITACHI LTD
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