CN211428918U - Frequency converter separated reactance circuit for coal mining machine - Google Patents
Frequency converter separated reactance circuit for coal mining machine Download PDFInfo
- Publication number
- CN211428918U CN211428918U CN202020441566.9U CN202020441566U CN211428918U CN 211428918 U CN211428918 U CN 211428918U CN 202020441566 U CN202020441566 U CN 202020441566U CN 211428918 U CN211428918 U CN 211428918U
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- China
- Prior art keywords
- frequency converter
- contactor
- circuit
- mining machine
- coal mining
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- Expired - Fee Related
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Abstract
The utility model discloses a coal-winning machine is with converter disconnect-type reactance circuit, include: the control module is in communication connection with the frequency converter, the control module is in control connection with the first contactor and the second contactor respectively, and the reactor is connected with the first contactor in series and then connected with the second contactor in parallel to form two independent electric quantity transmission loops corresponding to the frequency converter. The frequency converter separated reactance circuit for the coal mining machine realizes the automatic conversion function of the connection of the frequency converter reactance circuit for the coal mining machine and a power grid, thereby reducing the electric energy loss and the fault rate of a frequency converter system for the coal mining machine and greatly improving the operating efficiency and the system reliability of the frequency converter.
Description
Technical Field
The utility model belongs to the technical field of the converter, specifically speaking relates to a converter disconnect-type reactance circuit for coal-winning machine.
Background
The existing frequency converter for the coal mining machine is directly connected to a power supply grid through an electric reactor, but the electric reactor is only required to be in a working state when the frequency converter is in a feedback state, and when the frequency converter is in an electric state, the electric reactor does not have an effect in a circuit, and the electric energy loss and the fault rate of a frequency converter system for the coal mining machine can be increased.
Therefore, the prior art is subject to further improvement and development.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, a frequency converter separated reactance circuit for a coal mining machine is proposed.
In order to achieve the above object, the utility model provides a following technical scheme:
a frequency converter separated reactance circuit for a coal mining machine, comprising: the control module is in communication connection with the frequency converter, the control module is in control connection with the first contactor and the second contactor respectively, and the reactor is connected with the first contactor in series and then connected with the second contactor in parallel to form two independent electric quantity transmission loops corresponding to the frequency converter.
The frequency converter separated reactance circuit for the coal mining machine is characterized in that the frequency converter comprises an electric state and a feedback state, and when the frequency converter is in the electric state, the first contactor is switched off, and the second contactor is switched on.
The frequency converter separated reactance circuit for the coal mining machine is characterized in that when the frequency converter is in a feedback state, the first contactor is conducted, and the second contactor is disconnected.
The frequency converter separated reactance circuit for the coal mining machine is characterized in that the reactor is a series reactor.
The frequency converter separated reactance circuit for the coal mining machine is characterized in that the first contactor and the second contactor are both alternating current contactors.
The frequency converter separated reactance circuit for the coal mining machine is characterized in that the control module is provided with a conversion control circuit and a signal acquisition circuit, and the conversion control circuit is connected with the frequency converter control circuit through the signal acquisition circuit.
The frequency converter separated reactance circuit for the coal mining machine is characterized in that the control module is provided with a first driving circuit and a second driving circuit, the conversion control circuit is connected with the first contactor through the first driving circuit, and the conversion control circuit is connected with the second contactor through the second driving circuit.
Has the advantages that:
the utility model provides a converter disconnect-type reactance circuit for coal-winning machine, this design circuit can realize the connection of reactor according to the converter running state is automatic, has realized the automatic transfer function that converter reactance circuit and electric wire netting are connected for the coal-winning machine to reduce the electric energy loss and the fault rate of converter system for the coal-winning machine, improve the operating efficiency and the system reliability of converter greatly.
Drawings
Fig. 1 is a block diagram of a frequency converter separated reactance circuit for a coal cutter according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following description, together with the drawings of the present invention, clearly and completely describes the technical solution of the present invention, and based on the embodiments in the present application, other similar embodiments obtained by those skilled in the art without creative efforts shall all belong to the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustration and not for limitation of the present invention.
A frequency converter separated reactance circuit for a coal mining machine as shown in fig. 1, which includes: the control module 300 is in communication connection with the frequency converter 400, the control module 300 is respectively in control connection with the first contactor 210 and the second contactor 220, and the reactor 100 is connected with the first contactor 210 in series and then connected with the second contactor 220 in parallel to form two independent electric quantity transmission loops corresponding to the frequency converter.
Further, the control module 300 is provided with a conversion control circuit 310 and a signal acquisition circuit 320, and the conversion control circuit 310 is connected with the frequency converter control circuit through the signal acquisition circuit 320.
Further, the control module is provided with a first driving circuit 330 and a second driving circuit 340, the conversion control circuit 310 is connected with the first contactor 210 through the first driving circuit 330, and the conversion control circuit 310 is connected with the second contactor 220 through the second driving circuit 340.
The control module 300 obtains the electric quantity information of the frequency converter 400, such as the running current, the voltage, the steering, the torque, the fault and the like, and whether the frequency converter 400 works in the electric state or the feedback state through the signal acquisition circuit 320.
When the control module 300 acquires that the frequency converter 400 is in the electric state, the conversion control circuit 310 in the control module 300 controls the first contactor 210 to be switched off through the first driving circuit 330, and controls the second contactor 220 to be switched on through the second driving circuit 340. The power supply grid 500 is realized to directly supply power to the frequency converter without a reactor.
When the control module 300 acquires that the frequency converter 400 is in the feedback state, the switching control circuit 310 in the control module 300 controls the first contactor 210 to be turned on through the first driving circuit 330, and controls the second contactor 220 to be turned off through the second driving circuit 340. The electric quantity fed back by the frequency converter is fed back to the power supply grid 500 through the reactor.
Specifically, the reactor is a series reactor, and the first contactor and the second contactor are both alternating current contactors.
The utility model discloses converter disconnect-type reactance circuit for coal-winning machine can realize the connection of reactor according to the converter running state is automatic, has realized the automatic transfer function that converter reactance circuit and electric wire netting are connected for the coal-winning machine to reduce the electric energy loss and the fault rate of converter system for the coal-winning machine, improve the operating efficiency and the system reliability of converter greatly.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e. the present invention is intended to cover all equivalent variations and modifications within the scope of the present invention.
Claims (7)
1. A frequency converter separated reactance circuit for a coal mining machine is characterized by comprising: the control module is in communication connection with the frequency converter, the control module is in control connection with the first contactor and the second contactor respectively, and the reactor is connected with the first contactor in series and then connected with the second contactor in parallel to form two independent electric quantity transmission loops corresponding to the frequency converter.
2. The isolated reactance circuit of claim 1 wherein said frequency converter includes an electric state and a feedback state, and wherein when the frequency converter is in the electric state, the first contactor is open and the second contactor is closed.
3. The isolated reactance circuit of claim 2, wherein when the frequency converter is in the feedback state, the first contactor is on and the second contactor is off.
4. The frequency converter split reactance circuit for a coal cutter according to claim 1, characterized in that said reactor is a series reactor.
5. The frequency converter split reactance circuit for a coal cutter of claim 1 wherein said first contactor and said second contactor are both ac contactors.
6. The frequency converter separated reactance circuit for the coal mining machine according to claim 1, characterized in that the control module is provided with a conversion control circuit and a signal acquisition circuit, and the conversion control circuit is connected with the frequency converter control circuit through the signal acquisition circuit.
7. The frequency converter separated reactance circuit for the coal mining machine according to claim 6, characterized in that the control module is provided with a first driving circuit and a second driving circuit, the switching control circuit is connected with the first contactor through the first driving circuit, and the switching control circuit is connected with the second contactor through the second driving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020441566.9U CN211428918U (en) | 2020-03-31 | 2020-03-31 | Frequency converter separated reactance circuit for coal mining machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020441566.9U CN211428918U (en) | 2020-03-31 | 2020-03-31 | Frequency converter separated reactance circuit for coal mining machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211428918U true CN211428918U (en) | 2020-09-04 |
Family
ID=72254956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020441566.9U Expired - Fee Related CN211428918U (en) | 2020-03-31 | 2020-03-31 | Frequency converter separated reactance circuit for coal mining machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211428918U (en) |
-
2020
- 2020-03-31 CN CN202020441566.9U patent/CN211428918U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200904 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |