CN215815569U - Current mutual inductance gating device - Google Patents
Current mutual inductance gating device Download PDFInfo
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- CN215815569U CN215815569U CN202122116108.5U CN202122116108U CN215815569U CN 215815569 U CN215815569 U CN 215815569U CN 202122116108 U CN202122116108 U CN 202122116108U CN 215815569 U CN215815569 U CN 215815569U
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Abstract
The utility model discloses a current mutual inductance gating device, which relates to the technical field of power electronic equipment and comprises a main circuit and a control circuit, wherein the main circuit comprises an input loop, a current mutual inductance gating unit and an output circuit; the control circuit comprises detection units connected to the current transformers and used for collecting current signals, the detection units are connected with a main control unit used for judging input signals of the detection units, an input loop is connected with the main control unit and used for transmitting the current signals collected by the current transformers, the main control unit is connected with a driving unit and connected with a current mutual inductance gating unit through the driving unit, and the driving current mutual inductance gating unit is switched on or switched off. The product accesses the current mutual inductor signals of a plurality of generators, judges the current mutual inductor signal of one generator to be accessed to the power module through site selection, and the power electronic device can reach microsecond-level response speed and cannot cause adverse reaction due to the open circuit of a current loop.
Description
Technical Field
The utility model relates to the technical field of power electronic equipment, in particular to a current mutual inductance gating device.
Background
During the operation of the ship at the port, the diesel generator on the ship is required to generate power to provide necessary power for maintenance operation, so that a large amount of tail gas is discharged into the air, and energy consumption and environmental pollution are caused. According to statistics, carbon emission generated by auxiliary generators of ships during berthing at harbors accounts for 40-70% of the total carbon emission of the harbors, and is an important factor influencing air quality of the harbors and the cities. If the ship shore power system can enable the ship to stop at the wharf, the diesel generator is turned off, and then the land power supply is used for supplying power to the main ship-mounted system, so that the aim of reducing exhaust emission and improving the air quality of the port is fulfilled. Meanwhile, after the ship is connected with the wharf power supply system, noise pollution caused by the running of a generator set of the ship can be eliminated, and the working environment for maintenance of cabin equipment by turbine operators is improved.
Usually, the shore power is connected in a mode that a ship generator is cut off to supply power, then a shore-based power supply is connected into a ship power distribution station, the operation is complex under the condition, and the ship equipment, particularly the ship conduction equipment, is damaged due to frequent power failure of the power station, so that the safety of the ship is influenced. At present, more and more shipowners require that ships are continuously connected with shore power, which puts a strict requirement on a control system, and generally, each generator is configured with a power module to communicate with a shore power module, so that the purpose of uninterrupted power supply and network switching is achieved through mutual cooperation. The scheme has higher cost and larger occupied space.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model provides a current mutual inductance gate.
In order to solve the technical problems, the technical scheme adopted by the utility model is that the current mutual inductance gating device comprises a main circuit and a control circuit, wherein the main circuit comprises an input loop, a current mutual inductance gating unit and an output circuit, the input loop is connected with the current mutual inductance gating unit, the input loop is used for acquiring current signals, the current mutual inductance gating unit is used for executing on or off of the channel signals, and the output circuit is used for receiving the channel signals;
the control circuit comprises detection units connected to the current transformers and used for collecting current signals, the detection units are connected with a main control unit used for judging input signals of the detection units, an input loop is connected with the main control unit and used for transmitting the current signals collected by the current transformers, the main control unit is connected with a driving unit and connected with a current mutual inductance gating unit through the driving unit, and the driving current mutual inductance gating unit is switched on or switched off.
Furthermore, the current transformer is connected with and collects current signals of each generator on the ship, the current signals are converted into small currents from large currents, and the current signals of each generator are transmitted to the main control unit to judge whether each generator is switched on or switched off.
Furthermore, the current mutual inductance gating unit comprises a switch tube, the main control unit is connected with and controls the switch tube to be switched on or switched off, the switch tube is connected with an output circuit, and the output circuit receives a switching-on path signal and transmits the switching-on path signal to the power management module to realize shore ship communication.
Furthermore, a plurality of switch tubes are arranged on a path where current signals collected by the current transformers are located, the switch tubes of the path where the running generator is located are driven by the main control unit through the driving unit to be conducted, and only one switch tube is conducted.
Furthermore, the control circuit further comprises a protection unit and an upper computer, and the protection unit and the upper computer are respectively connected with the main control unit.
The utility model discloses a current mutual inductance gate, which adopts power electronic equipment to form a voltage withstanding grade of 690V, connects current mutual inductor signals of a plurality of generators, judges that one generator current mutual inductance signal is connected into a power module through site selection, and can achieve microsecond-level response speed of a power electronic device, avoid adverse reaction caused by open circuit of a current loop and greatly save cost and installation space.
Drawings
Fig. 1 is a connection diagram of a main circuit.
Fig. 2 is a connection diagram of the control circuit.
In the figure: 1. a main circuit; 2. a control circuit; 3. a current transformer; 4. a power management module; 11. an input loop; 12. a current mutual inductance gating unit; 13. an output circuit; 21. a detection unit; 22. a main control unit; 23. a drive unit; 24. a protection unit; 25. an upper computer; k1, access switch; k2, bypass switch.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The current mutual inductance gating device as shown in fig. 1 and fig. 2 comprises a main circuit 1 and a control circuit 2, wherein the main circuit 1 comprises an input loop 11 connected to each current transformer 3 and used for collecting current signals, a current mutual inductance gating unit 12 used for conducting or cutting off channel signals and an output circuit 13 used for receiving conducting channel signals, the input loop 11 is connected with the current mutual inductance gating unit 12, and the current mutual inductance gating unit 12 is connected with the output circuit 13;
the control circuit 2 comprises detection units 21 which are connected to the current transformers and collect current signals, the detection units 21 are connected with a main control unit 22 which judges input signals of the detection units, the input loop 11 is connected with the main control unit 22 and transmits the current signals collected by the current transformers, the main control unit 22 is connected with a driving unit 23 and is connected with a current mutual inductance gating unit 12 through the driving unit 23, and the current mutual inductance gating unit 12 is driven to be switched on or switched off.
The current transformer 3 is connected with and collects current signals of each generator on the ship, the current signals are converted into small currents from large currents, and the current signals of each generator are transmitted to the main control unit 22 to judge the connection or disconnection of each generator.
The current mutual inductance gating unit 12 comprises a switch tube, the main control unit 22 is connected with and controls the on or off of the switch tube, the switch tube is connected with the output circuit 13, and the output circuit 13 receives a conduction path signal and transmits the conduction path signal to the power management module 4 to realize shore ship communication. The switch tubes are arranged on a path where the current signals collected by the current transformers are located, the main control unit 22 drives the switch tubes of the path where the running generator is located to be conducted through the driving unit 23, and only one switch tube is conducted.
In the embodiment, six groups of switching tubes are 1# -3#, the corresponding driving units are switching tube 1# -3# driving circuits, each switching tube is correspondingly connected with a current transformer, when the main control unit receives and judges signals input from the current transformers to the detection unit, the operation state of each generator is judged, the driving circuit is controlled, the bypass switch K2 is disconnected after the access switch K1 of the switching tube corresponding to the running generator is closed, and the access switch K1 is disconnected after the bypass switches K2 of the switching tubes corresponding to other generators which are not running are closed.
The control circuit 2 further comprises a protection unit 24 and an upper computer 25, and the protection unit 24 and the upper computer 25 are respectively connected with the main control unit 22. The protection unit 24 mainly protects the circuit, such as backup protection when the mutual inductance gating switch fails, and ensures that the current transformer is always in a working or short-circuit state. The upper computer 25 sends a control command to the current mutual inductance gating device, receives the current working state information of the current mutual inductance gating device and detects the working state of each part of the circuit.
The utility model discloses a mutual gate of current adopts power electronic equipment to constitute withstand voltage level and is 690V, inserts the current transformer signal of many generators, judges a mutual inductive signal of generator current through the addressing and inserts power module, and power electronic device can reach microsecond level response speed, can not arouse adverse reaction because the current circuit opens circuit, great saving cost and installation space.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.
Claims (5)
1. A current mutual inductance gate is characterized in that: the current transformer gating circuit comprises a main circuit (1) and a control circuit (2), wherein the main circuit (1) comprises an input loop (11) which is connected to each current transformer (3) and collects current signals, a current mutual inductance gating unit (12) for executing the switching on or switching off of the channel signals and an output circuit (13) for receiving the switching on of the channel signals, the input loop (11) is connected with the current mutual inductance gating unit (12), and the current mutual inductance gating unit (12) is connected with the output circuit (13);
the control circuit (2) comprises detection units (21) which are connected to the current transformers and collect current signals, the detection units (21) are connected with a main control unit (22) which judges input signals of the detection units, the input loop (11) is connected with the main control unit (22) and transmits the current signals collected by the current transformers, the main control unit (22) is connected with a driving unit (23) and is connected with a current mutual inductance gating unit (12) through the driving unit (23), and the driving current mutual inductance gating unit (12) is switched on or off.
2. The current transformer gate of claim 1, wherein: the current transformer (3) is connected with and collects current signals of each generator on the ship, the current signals are converted into small currents from large currents, and the current signals of each generator are transmitted to the main control unit (22) to judge the connection or disconnection of each generator.
3. The current transformer gate of claim 2, wherein: the current mutual inductance gating unit (12) comprises a switch tube, the main control unit (22) is connected with and controls the switch tube to be switched on or switched off, the switch tube is connected with the output circuit (13), and the output circuit (13) receives a switching-on passage signal and transmits the switching-on passage signal to the power management module (4) to achieve shore ship communication.
4. The current transformer gate of claim 3, wherein: the switch tubes are arranged on a path where current signals collected by the current transformers are located, the switch tubes are arranged on the paths one by one, the main control unit (22) drives the running generator to be conducted through the drive unit (23), and only one switch tube is conducted.
5. The current transformer gate of claim 4, wherein: the control circuit (2) further comprises a protection unit (24) and an upper computer (25), and the protection unit (24) and the upper computer (25) are respectively connected with the main control unit (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122116108.5U CN215815569U (en) | 2021-09-02 | 2021-09-02 | Current mutual inductance gating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122116108.5U CN215815569U (en) | 2021-09-02 | 2021-09-02 | Current mutual inductance gating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215815569U true CN215815569U (en) | 2022-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122116108.5U Active CN215815569U (en) | 2021-09-02 | 2021-09-02 | Current mutual inductance gating device |
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|---|---|
| CN (1) | CN215815569U (en) |
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2021
- 2021-09-02 CN CN202122116108.5U patent/CN215815569U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.19, Shenyang South Road, Zhangcun Town, Huancui District, Weihai City, Shandong Province 264200 Patentee after: Weihai COSCO marine heavy industry technology Co.,Ltd. Address before: No.19, Shenyang South Road, Zhangcun Town, Huancui District, Weihai City, Shandong Province 264200 Patentee before: WEIHAI COSCO SHIPBUILDING TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |