CN203800856U - Mining high-voltage explosion-proof combined frequency converter - Google Patents
Mining high-voltage explosion-proof combined frequency converter Download PDFInfo
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- CN203800856U CN203800856U CN201420044733.0U CN201420044733U CN203800856U CN 203800856 U CN203800856 U CN 203800856U CN 201420044733 U CN201420044733 U CN 201420044733U CN 203800856 U CN203800856 U CN 203800856U
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- 238000005065 mining Methods 0.000 title claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 238000004891 communication Methods 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
A mining high-voltage explosion-proof combined frequency converter is provided. The mining high-voltage explosion-proof combined frequency converter includes a frequency conversion system and a control system. The mining high-voltage explosion-proof combined frequency converter is characterized in that the frequency conversion system comprises a rectifying unit and inverting units; the rectifying unit is connected with the inverting units; three inverting units are provided; each inverting unit is connected between the positive pole and the negative pole of a frequency converter direct current bus; the three inverting units are in parallel connection; each inverting unit is connected with a load; the control system comprises a main controller and inverting unit branch controllers; three inverting unit branch controllers are provided and are connected with the three inverting units respectively; and the main controller is connected with the inverting unit branch controllers respectively. With the mining high-voltage explosion-proof combined frequency converter of the utility model adopted, combined frequency conversion control of multi-loop independent output of a 3300V mining frequency converter can be realized, and requirements for multi-machine driving of 3300V voltage-grade high-power fully mechanized coal mining equipment can be satisfied.
Description
Technical field
The utility model relates to electric and electronic technical field, comprises a kind of mining high-voltage explosion-proof frequency converter, specifically, relates to the explosion-proof combined frequency changer of a kind of 3300V mining high-voltage.
Background technology
Mining anti-explosion frequency converter drive motors has the unique advantages such as start and stop are steady, stepless speed control, and in coal mining enterprise, application is more and more extensive.Operating condition under coal mine is generally all more severe, and power consumption equipment is many, and place capacity is large, conventionally adopts high voltage converter as motor driver.
In high-power scratch board conveyor and belt conveyor, the combined frequency changer multiloop output of 3300V electric pressure drives the case of two or three motors.Its implementation, for by outlet side parallel contactor, realizes the object of a transducer drive multiple electric motors, but this frequency converter output loop is not independent, is no more than under the prerequisite of frequency converter maximum power at total power of motor, realizes unit and drives more.This mode is not owing to being independently between output loop, cannot realize the power-balance problem between multiple electric motors, also cannot realize the independent control to each loop, once inversion side breaks down, whole output loop all cannot move, and affects the continuous production under coal mine.
Utility model content
The purpose of this utility model is the above deficiency for prior art, and a kind of explosion-proof combined frequency changer of mining high-voltage of 3300V electric pressure is provided.
The technical solution of the utility model is: the explosion-proof combined frequency changer of a kind of mining high-voltage, comprise frequency conversion system and control system, frequency conversion system comprises rectification unit and inversion unit, rectification unit is connected with inversion unit, inversion unit has three, each inversion unit is connected between frequency changer direct current bus both positive and negative polarity, between three inversion units, is relation in parallel, and each inversion unit is connected with respectively load; Control system comprises main controller and inversion unit iversion controller, and inversion unit iversion controller has three, is connected respectively with three inversion units, and main controller is connected respectively with three inversion unit iversion controllers.
Preferably: inverter iversion controller comprises detecting unit, power cell and protected location, detecting unit comprises voltage and current checkout gear.
Preferably: between main controller and inversion unit iversion controller, pass through Profibus bus communication.
The beneficial effects of the utility model are: the utility model is rational in infrastructure, have adopted the syndeton of three loop independence inversion units, and each inversion unit is provided with to independently control unit, can realize the independent control to each loop inversion unit; Main controller is according to three inversion unit ruuning situations, and adjustable inversion output, realizes three dynamic power balances between output loop; Due to underground working operation demand, need one of transducer drive, two or three machine operation, this frequency convertor system is provided with three inversion units, three inversion units independently motor load of drive respectively, can be according to the demand of drive motors, by the operating state of three inversion units of main controller control, realize flexibly.The utility model has been realized the combination variable frequency control that 3300V mine-used frequency-converter multiloop is independently exported, and has better met the needs that under coal mine, the high-power fully-mechanized mining equipment multimachine of 3300V electric pressure drives.
Brief description of the drawings
Accompanying drawing 1 is the utility model frequency conversion system structural representation.
Accompanying drawing 2 is the utility model frequency conversion system fundamental diagram.
Accompanying drawing 3 is the utility model control system structural representation.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in more detail.
As shown in Figure 1 to Figure 3:
The explosion-proof combined frequency changer of this mining high-voltage is applicable to 3300V electric pressure, comprises frequency conversion system and control system, and frequency conversion system comprises rectification unit and inversion unit, and rectification unit is connected with inversion unit.
Inversion unit has three, and each inversion unit is connected between frequency changer direct current bus both positive and negative polarity, between three inversion units, is relation in parallel, and each inversion unit is connected with respectively load, can realize the load of a transducer drive multiple electric motors.
Control system comprises main controller and inversion unit iversion controller, inversion unit iversion controller has three, be respectively inversion unit 1 iversion controller, inversion unit 2 iversion controllers, inversion unit 3 iversion controllers, three inversion unit iversion controllers are connected with three inversion units respectively, and main controller is connected respectively with three inversion unit iversion controllers.Inverter iversion controller comprises detecting unit, power cell and protected location, and detecting unit comprises voltage and current checkout gear, is responsible for detecting electric current and the voltage of inversion circuit; The power stage of power cell control inversion unit; Protected location comprises protective circuit, and protection inversion unit is normally worked.
Between main controller and inversion unit iversion controller, by Profibus bus communication, Profibus bus applicability is wide, and transmission rate is fast, can realize High-speed Control transfer of data.
When system works, main controller, by the operating state of the each inversion unit of inversion unit iversion controller control, in the time of a machine operation of demand motive, is controlled the some work in three inversion units; In the time of two machine operation of demand motive, control certain two work in three inversion units; In the time of three machine operation of demand motive, control three inversion units and all work.The detected state of voltage and current checkout gear is turned back to main controller by three inversion unit iversion controllers, and main controller regulates inversion output according to the feedback signal of inversion unit iversion controller, realizes three dynamic equilibrium between output loop.When detecting unit detects this loop inversion unit or output voltage, current anomaly, control unit stops inversion output automatically, and sends fault message to main controller, and main controller carries out independent on off control to each output loop.
Claims (3)
1. the explosion-proof combined frequency changer of mining high-voltage, comprise frequency conversion system and control system, it is characterized in that: described frequency conversion system comprises rectification unit and inversion unit, rectification unit is connected with inversion unit, described inversion unit has three, each inversion unit is connected between frequency changer direct current bus both positive and negative polarity, between three inversion units, is relation in parallel, and each inversion unit is connected with respectively load; Control system comprises main controller and inversion unit iversion controller, and inversion unit iversion controller has three, is connected respectively with three inversion units, and main controller is connected respectively with three inversion unit iversion controllers.
2. the explosion-proof combined frequency changer of mining high-voltage as claimed in claim 1, is characterized in that: described inverter iversion controller comprises detecting unit, power cell and protected location, and described detecting unit comprises voltage and current checkout gear.
3. the explosion-proof combined frequency changer of mining high-voltage as claimed in claim 1 or 2, is characterized in that: between described main controller and inversion unit iversion controller, pass through Profibus bus communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044733.0U CN203800856U (en) | 2014-01-24 | 2014-01-24 | Mining high-voltage explosion-proof combined frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420044733.0U CN203800856U (en) | 2014-01-24 | 2014-01-24 | Mining high-voltage explosion-proof combined frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203800856U true CN203800856U (en) | 2014-08-27 |
Family
ID=51383040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420044733.0U Expired - Lifetime CN203800856U (en) | 2014-01-24 | 2014-01-24 | Mining high-voltage explosion-proof combined frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203800856U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112653372A (en) * | 2020-12-31 | 2021-04-13 | 秦皇岛天拓电机车有限公司 | Mining direct current medium voltage combined variable frequency speed regulator |
| CN114337464A (en) * | 2021-12-31 | 2022-04-12 | 深圳市汇川技术股份有限公司 | Frequency converter control method, frequency conversion system, carrying device and storage medium |
-
2014
- 2014-01-24 CN CN201420044733.0U patent/CN203800856U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112653372A (en) * | 2020-12-31 | 2021-04-13 | 秦皇岛天拓电机车有限公司 | Mining direct current medium voltage combined variable frequency speed regulator |
| CN114337464A (en) * | 2021-12-31 | 2022-04-12 | 深圳市汇川技术股份有限公司 | Frequency converter control method, frequency conversion system, carrying device and storage medium |
| CN114337464B (en) * | 2021-12-31 | 2023-11-21 | 深圳市汇川技术股份有限公司 | Control method of frequency converter, frequency conversion system, carrying device and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 266400 2299 Hai Xi Road, Huangdao District, Qingdao, Shandong Patentee after: HUAXIA TIANXIN INTELLIGENT INTERNET OF THINGS Co.,Ltd. Address before: 266000 No. 176 Haixi Road, Huangdao economic and Technological Development Zone, Huangdao District, Qingdao, Jiaonan. Patentee before: Qingdao Tianxin Electric Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |