CN202421293U - Improved three-phase current sensor - Google Patents
Improved three-phase current sensor Download PDFInfo
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- CN202421293U CN202421293U CN2011205745898U CN201120574589U CN202421293U CN 202421293 U CN202421293 U CN 202421293U CN 2011205745898 U CN2011205745898 U CN 2011205745898U CN 201120574589 U CN201120574589 U CN 201120574589U CN 202421293 U CN202421293 U CN 202421293U
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- phase current
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Abstract
The utility model relates to the technical field of sensors, in particular to an improved three-phase current sensor, which comprises a first magnetic measurement device and a second magnetic measurement device. Both the first magnetic measurement device and the second magnetic measurement device comprise magnetic circuits, each of the magnetic circuits comprise at least two gaps and magnetic detectors placed in the gaps. Both the first magnetic measurement device and the second magnetic measurement device are located at any end of a middle conductor chamber of one of the three phases which are inserted to form a conducting system. The two gaps of each of the magnetic circuits are located on the same plane, and a plurality of resistors are connected in parallel with the magnetic circuits. Since the first magnetic measurement device is matched with the second magnetic measurement device and the gaps of the magnetic circuits and the magnetic detectors are in skillful arrangement, purposes of avoiding magnetic circuit saturation and reducing weight are achieved. By the aid of the resistors connected in parallel with the magnetic circuits, current can be flexibly and conveniently detected without preparing a plurality of current detectors with different rated value in advance, so that weight of the overall sensor is reduced and the sensor is convenient to install.
Description
Technical field
The utility model relates to sensor technical field, especially relates to a kind of improved three-phase current sensor.
Background technology
At present, existing three-phase current sensor, during to the measurement of heavy current, heavy current can produce high-intensity magnetic field, and high-intensity magnetic field can make that the magnetic circuit of sensor is saturated, causes nonlinear response, and then influence measuring error.When three-phase current sensor each other near the time; This saturation problem is more serious, yet saturated for fear of magnetic circuit, need add the weight of large sensor; In addition; When existing sensors measurement electric current changes electric current greatly, need to prepare in advance the different current detector of several ratings, be not easy to installation like this.
The utility model content
To the deficiency that above-mentioned prior art exists, the purpose of the utility model provides a kind of improved three-phase current sensor, and it has can avoid the characteristics that magnetic circuit is saturated, reduce weight, be convenient to install.
To achieve these goals; The technical scheme that the utility model adopted is: a kind of improved three-phase current sensor; Comprise the first magnetic measurement device and the second magnetic measurement device, the said first magnetic measurement device and the second magnetic measurement device include magnetic circuit, and said magnetic circuit comprises at least two gaps; And be positioned over the magnetic field detector in the gap; The said first magnetic measurement device and the second magnetic measurement device all are positioned at wherein mutually any end of middle conductor cavity that is used to insert the three-phase that forms said conducting system, and at least two gaps of said magnetic circuit are positioned at same plane, and said magnetic path parallel connection is connected with a plurality of resistance.
Wherein, the said first magnetic measurement device and the second magnetic measurement device are Hall element.
Wherein, The said first magnetic measurement device and the second magnetic measurement device all are installed on the common support plate; Said common support plate forms a wall, and said wall is the shell that magnetic circuit is installed on sensor wherein, and said common support plate comprises the circuit that has the electronic package that is used for processing signals.
After adopting said structure; The utility model is compared the advantage that is had with prior art: it comprises the first magnetic measurement device and the second magnetic measurement device; The said first magnetic measurement device and the second magnetic measurement device include magnetic circuit, and said magnetic circuit comprises at least two gaps, and are positioned over the magnetic field detector in the gap; The said first magnetic measurement device and the second magnetic measurement device all are positioned at wherein mutually any end of middle conductor cavity that is used to insert the three-phase that forms said conducting system; At least two gaps of said magnetic circuit are positioned at same plane, and said magnetic path parallel connection is connected with a plurality of resistance, and the utility model is used through the said first magnetic measurement device and the second magnetic measurement device; The ingenious setting of the gap of magnetic circuit and magnetic field detector; Avoid the purpose that magnetic circuit is saturated, reduce weight thereby reach, and a plurality of resistance that said magnetic path parallel connection connects, detection electric current that can be flexible; Need not prepare the different current detector of several ratings in advance, not only reduce the weight of integral sensors but also be convenient to install.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the structural representation of the utility model.
Among the figure: 1, the first magnetic measurement device; 2, the second magnetic measurement device;
3, magnetic circuit; 4, gap;
5, magnetic field detector; 6, resistance;
7, common support plate.
Embodiment
The following stated is merely the preferred embodiment of the utility model, does not therefore limit the protection domain of the utility model.
As shown in Figure 1: a kind of improved three-phase current sensor; Comprise the first magnetic measurement device 1 and the second magnetic measurement device 2, the said first magnetic measurement device 1 and the second magnetic measurement device 2 are Hall element, and the said first magnetic measurement device 1 and the second magnetic measurement device 2 include magnetic circuit 3; Said magnetic circuit 3 comprises at least two gaps 4; And be positioned over the magnetic field detector 5 in the gap 4, and the said first magnetic measurement device 1 and the second magnetic measurement device 2 all are positioned at wherein mutually any end of middle conductor cavity that is used to insert the three-phase that forms said conducting system, and at least two gaps 4 of said magnetic circuit 3 are positioned at same plane; Said magnetic circuit 3 is connected in parallel to a plurality of resistance 6; The utility model is used through the said first magnetic measurement device 1 and the second magnetic measurement device 2, and the purpose that magnetic circuit is 3 saturated, reduce weight is avoided thereby reach in gap of magnetic circuit 34 and magnetic field detector 5 ingenious settings; And a plurality of resistance 6 that said magnetic circuit 3 is connected in parallel; Detection electric current that can be flexible need not be prepared the different current detector of several ratings in advance, not only reduces the weight of integral sensors but also be convenient to install.
In the present embodiment; The said first magnetic measurement device 1 and the second magnetic measurement device 2 all are installed on common support plate 7; Said common support plate 7 forms a wall, and said wall is the shell that magnetic circuit 3 is installed on sensor wherein, is convenient to be connected with exterior electrical components; Said common support plate 7 comprises the circuit that has the electronic package that is used for processing signals, is convenient to handle measuring-signal.
The above only is the preferred embodiments of the utility model, is to include in the utility model patent claim so all equivalences of doing according to the described structure of the utility model patent claim, characteristic and principle change or repair.
Claims (3)
1. improved three-phase current sensor; It is characterized in that: comprise the first magnetic measurement device (1) and the second magnetic measurement device (2); The said first magnetic measurement device (1) and the second magnetic measurement device (2) include magnetic circuit (3); Said magnetic circuit (3) comprises at least two gaps (4), and is positioned over the magnetic field detector (5) in the gap (4), and the said first magnetic measurement device (1) and the second magnetic measurement device (2) all are positioned at wherein mutually any end of middle conductor cavity that is used to insert the three-phase that forms said conducting system; At least two gaps (4) of said magnetic circuit (3) are positioned at same plane, and said magnetic circuit (3) is connected in parallel to a plurality of resistance (6).
2. a kind of improved three-phase current sensor according to claim 1 is characterized in that: the said first magnetic measurement device (1) and the second magnetic measurement device (2) are Hall element.
3. a kind of improved three-phase current sensor according to claim 1; It is characterized in that: the said first magnetic measurement device (1) and the second magnetic measurement device (2) all are installed on common support plate (7); Said common support plate (7) forms a wall; Said wall is the shell that magnetic circuit (3) is installed on sensor wherein, and said common support plate (7) comprises the circuit that has the electronic package that is used for processing signals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205745898U CN202421293U (en) | 2011-12-28 | 2011-12-28 | Improved three-phase current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205745898U CN202421293U (en) | 2011-12-28 | 2011-12-28 | Improved three-phase current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421293U true CN202421293U (en) | 2012-09-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205745898U Expired - Fee Related CN202421293U (en) | 2011-12-28 | 2011-12-28 | Improved three-phase current sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202421293U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818924A (en) * | 2012-09-07 | 2012-12-12 | 天津市松正电动汽车技术股份有限公司 | Controller current sensor |
| CN106018942A (en) * | 2016-06-28 | 2016-10-12 | 清华大学 | Current sensor array used for measuring three-phase current and measuring method thereof |
| CN106908634A (en) * | 2017-03-29 | 2017-06-30 | 清华大学 | A kind of AC current sensor based on magnetoelectricity laminate with c-type magnet ring |
| CN112313518A (en) * | 2018-07-06 | 2021-02-02 | 株式会社日立制作所 | Power conversion device |
-
2011
- 2011-12-28 CN CN2011205745898U patent/CN202421293U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818924A (en) * | 2012-09-07 | 2012-12-12 | 天津市松正电动汽车技术股份有限公司 | Controller current sensor |
| CN106018942A (en) * | 2016-06-28 | 2016-10-12 | 清华大学 | Current sensor array used for measuring three-phase current and measuring method thereof |
| CN106018942B (en) * | 2016-06-28 | 2019-01-15 | 清华大学 | It is a kind of for measuring the current sensor array and measurement method of three-phase current |
| CN106908634A (en) * | 2017-03-29 | 2017-06-30 | 清华大学 | A kind of AC current sensor based on magnetoelectricity laminate with c-type magnet ring |
| CN112313518A (en) * | 2018-07-06 | 2021-02-02 | 株式会社日立制作所 | Power conversion device |
| CN112313518B (en) * | 2018-07-06 | 2023-07-07 | 株式会社日立制作所 | Power conversion device |
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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 | ||
| CP01 | Change in the name or title of a patent holder |
Address after: BaoFeng road 315500 Zhejiang city of Fenghua Province East Development Zone No. 61 Patentee after: NINGBO JINCHENG ELECTRONIC TECHNOLOGY CO., LTD. Address before: BaoFeng road 315500 Zhejiang city of Fenghua Province East Development Zone No. 61 Patentee before: NINGBO JINCHENG ELECTRONIC TECHNOLOGY CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20171228 |