CN205248786U - Mode DFM spindle voltage, axle electric current suppression device concatenate - Google Patents
Mode DFM spindle voltage, axle electric current suppression device concatenate Download PDFInfo
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- CN205248786U CN205248786U CN201521062512.7U CN201521062512U CN205248786U CN 205248786 U CN205248786 U CN 205248786U CN 201521062512 U CN201521062512 U CN 201521062512U CN 205248786 U CN205248786 U CN 205248786U
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Abstract
The utility model discloses a mode DFM spindle voltage, axle electric current suppression device concatenate, including the casing, generating line row that the casing internal fixation was equipped with common mode inductance module, temperature measuring device and acted on mutually with the common mode inductance module, and outside the generating line both ends of arranging all extend to the casing, three -phase cable junction between generating line row and generator and the converter. The beneficial effect of the utility model: the utility model discloses can realize behind the three -phase cable junction between generating line row and generator and the converter that DFM spindle voltage, shaft current restrain, effectively reduce pivot common mode voltage, electric current, avoid sending out transmission system of motor and go wrong frequently.
Description
Technical field
The utility model relates to electric generator frequency-converter technical field, specifically, relates to a kind of serial connection mode DFM arbor voltage, shaft current restraining device.
Background technology
Wind power generator frequency transformator has used IGBT at present, the parasitic capacitance simultaneously existing in generator itself and long cable, cause producing in alternator shaft common-mode voltage, the electric current of high frequency peak value, owing to having these harmful shaft voltages, electric current, can there is galvano-cautery in alternator shaft and connection bearing, cause generator driving unit fault to occur frequently.
For the problem in above-mentioned correlation technique, effective solution is not yet proposed at present.
Utility model content
The purpose of this utility model is to provide a kind of serial connection mode DFM arbor voltage, shaft current restraining device, can effectively reduce engine common-mode voltage, electric current, avoids generator driving unit fault to occur frequently.
For realizing above-mentioned technical purpose, the technical solution of the utility model is achieved in that
A kind of serial connection mode DFM arbor voltage, shaft current restraining device, comprise housing, in described housing, be fixed with common mode inductance module, temperature measuring equipment and the bus bar acting on mutually with common mode inductor module, and the two ends of described bus bar all extend to outside housing, between described bus bar and generator and current transformer, threephase cable is connected.
The beneficial effects of the utility model: between the utility model bus bar and generator and current transformer, threephase cable can be realized DFM arbor voltage after being connected, shaft current suppresses, and effectively reduces rotating shaft common-mode voltage, electric current, avoids generator driving unit fault to occur frequently.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is according to the serial connection mode DFM arbor voltage described in the utility model embodiment, the structural representation of shaft current restraining device.
In figure:
1, bus bar; 2, common mode inductance module; 3, temperature measuring equipment; 4, housing.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment. Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain, belongs to the scope that the utility model is protected.
As shown in Figure 1, according to one serial connection mode DFM arbor voltage, shaft current restraining device described in embodiment of the present utility model, comprise housing 4, in described housing 4, be fixed with common mode inductance module 2, temperature measuring equipment 3 and the bus bar 1 acting on mutually with common mode inductor module 2, and the two ends of described bus bar 1 all extend to outside housing 4, between described bus bar 1 and generator and current transformer, threephase cable is connected.
Understand technique scheme of the present utility model for convenient, below by technique scheme of the present utility model being elaborated in concrete occupation mode.
In the time of concrete use, between described bus bar 1 and generator and current transformer, threephase cable is connected, will there is magnetic Field Coupling in threephase cable and common mode inductance module 2, suppress high frequency common mode voltage, and high-frequency harmonic is converted to heat dispel the heat by air, realize DFM arbor voltage, shaft current suppresses. Temperature measuring equipment 3 energy Real-Time Monitoring common mode inductance module 2 temperature, avoided cause thermal damage.
In sum, by means of technique scheme of the present utility model, between the utility model bus bar and generator and current transformer, threephase cable can be realized DFM arbor voltage after being connected, shaft current suppresses, and effectively reduces rotating shaft common-mode voltage, electric current, avoids generator driving unit fault to occur frequently.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (1)
1. one kind is connected in series mode DFM arbor voltage, shaft current restraining device, it is characterized in that, comprise housing (4), in described housing (4), be fixed with common mode inductance module (2), temperature measuring equipment (3) and bus bar (1), and the two ends of described bus bar (1) all extend to outside housing (4), between described bus bar (1) and generator and current transformer, be connected by threephase cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521062512.7U CN205248786U (en) | 2015-12-17 | 2015-12-17 | Mode DFM spindle voltage, axle electric current suppression device concatenate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521062512.7U CN205248786U (en) | 2015-12-17 | 2015-12-17 | Mode DFM spindle voltage, axle electric current suppression device concatenate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205248786U true CN205248786U (en) | 2016-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521062512.7U Active CN205248786U (en) | 2015-12-17 | 2015-12-17 | Mode DFM spindle voltage, axle electric current suppression device concatenate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205248786U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106909713A (en) * | 2017-01-17 | 2017-06-30 | 电子科技大学 | A kind of three phase alternating current motor high frequency model suitable for analyzing common mode disturbances |
| CN106998131A (en) * | 2017-05-19 | 2017-08-01 | 北京唐浩电力工程技术研究有限公司 | A kind of system and method for preventing fan converter IGBT from switching transient current impact |
| CN108770323A (en) * | 2018-08-29 | 2018-11-06 | 北斗航天汽车（北京）有限公司 | Electric machine controller |
-
2015
- 2015-12-17 CN CN201521062512.7U patent/CN205248786U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106909713A (en) * | 2017-01-17 | 2017-06-30 | 电子科技大学 | A kind of three phase alternating current motor high frequency model suitable for analyzing common mode disturbances |
| CN106998131A (en) * | 2017-05-19 | 2017-08-01 | 北京唐浩电力工程技术研究有限公司 | A kind of system and method for preventing fan converter IGBT from switching transient current impact |
| CN108770323A (en) * | 2018-08-29 | 2018-11-06 | 北斗航天汽车（北京）有限公司 | Electric machine controller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 101300 Beijing Haidian District Zizhuyuan Road No. 120 Building No. 1 608 Patentee after: Beijing access people Polytron Technologies Inc Address before: 101300, building 1, TEDA science and Technology Park, Tianzhu Free Trade Zone, Tianzhu, Beijing, Shunyi District Patentee before: Beijing Eulikind Co., Ltd. |