CN108718163A - A kind of permanent-magnetic variable-frequency driving drag conveyor energy-saving control device - Google Patents
A kind of permanent-magnetic variable-frequency driving drag conveyor energy-saving control device Download PDFInfo
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- CN108718163A CN108718163A CN201810492071.6A CN201810492071A CN108718163A CN 108718163 A CN108718163 A CN 108718163A CN 201810492071 A CN201810492071 A CN 201810492071A CN 108718163 A CN108718163 A CN 108718163A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/46—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another
- H02P5/50—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors for speed regulation of two or more dynamo-electric motors in relation to one another by comparing electrical values representing the speeds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P21/00—Arrangements or methods for the control of electric machines by vector control, e.g. by control of field orientation
- H02P21/13—Observer control, e.g. using Luenberger observers or Kalman filters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a kind of permanent-magnetic variable-frequencies to drive drag conveyor energy-saving control device, belong to the Energy Saving Control field of defeated coal hoisting machinery device under mine, it is a kind of coal stream mode combination permanent-magnetic variable-frequency all-in-one machine real-time speed regulating according to variation, becomes to holding down the energy-saving control device of power match in various speed.The device is made of coal stream mode detection feedback module, principal and subordinate's driving power match control module, permanent-magnetic variable-frequency all-in-one machine and drag conveyor.Biggest advantage is to carry out multipoint acquisition, feedback to coal flow state information from motor and conveying scraper plate using multiple sensors, accordingly by the control module for merging electric current, rotating speed, the driving of magnetic flux tricyclic vector, realize that online coal stream detection drives realtime power to match with principal and subordinate under mine in mine, achieve the purpose that the occasions such as energy-saving Energy Saving Control suitable for the medium and heavy coal conveyor tool of fully-mechanized mining working under mine.
Description
Technical field
The invention belongs to Electrical Equipments of Coal Mine technical fields, and in particular to a kind of permanent-magnetic variable-frequency driving drag conveyor is energy saving
Control device.
Background technology
Currently, China's common type of drive of mine lower scraping plate conveyer is mostly double-speed motor, CST controllable initiating devices.
The type of drive of double-speed motor usually couples the chain of drag conveyor according to two-speed motor by retarder, is filled on motor
There is double winding, is low speed winding and high speed winding respectively.Low speed winding, paddled conveyor chain item are used when electrical power starts
Speed-raising rotation therewith is transformed into the energization of high speed winding and motor and scrapes under the action of inertia after operation reaches stable state
Plate conveyer continues to raise speed on present speed, reaches constant-speed operation after normal speed.Double-speed motor driving can be preferably real
Existing device starts the transition with stable operation, but there is a problem of that startup power is low, motor frequent in coal rheologyization
Frequent reduction of speed raising speed, continuous switch motor winding considerably increase electric energy loss, and slow persistence operation easily occurs under case of heavy load
And the problem of drag conveyor speed-raising is to rated speed can not be made.And it is not easy to carry out head under the continuous switching of machine winding
The matched regulation and control of tail power of motor cause more unnecessary electric energy losses.
CST controllable initiating devices are made of multiple stage gear reduction device, the linear clutch of wet type and hydraulic control system.
Before drag conveyor startup, the output shaft of CST controllable initiating devices remains stationary as, in driving motor speed-raising to rated speed
Afterwards, hydraulic control system increases the hydraulic pressure of clutch therewith, and the operation of drag conveyor speedup is driven to reach rated condition.
CST controllable initiating devices are usually used in No Load Start, and dash current is small, but when drag conveyor is heavier in coal current load and frequent liter
When under the working condition that reduction of speed is even converted close to continuous start and stop, CST controllable initiatings device is simultaneously not suitable for, and is chiefly used in asynchronous
Motor.
Compared with the type of drive such as common double speed asynchronous machine, permanent magnet synchronous motor possesses more efficient, power factor
Higher, reliability is stronger, small, and power density is big and detent torque is big, and noise is small, and temperature rises low advantage；It is controllably opened with CST
Dynamic device is compared, and frequency conversion drive all has advantage outstanding, and frequency converter in start and stop conversion, transmission efficiency, stability etc.
Control can preferably solve the problems, such as that motor is out of control, reduce the incidence of failure, extend the service life of equipment, energy-saving effect is more
It is good, it is more flexible in the matched regulation and control of two power of motor of frame head and tail.But in the prior art and there is no above by forever
The mode of magnetic frequency conversion drive.
Invention content
A kind of permanent-magnetic variable-frequency of the present invention drives drag conveyor energy-saving control device, and its object is to solve to scrape under existing mine
Because continuously irregularly variation causes frame head and tail power of motor to mismatch operation to generate to coal current load when plate conveyer works
The drawbacks of a large amount of electric energy losses.To disclose it is a kind of using multiple sensors from motor with convey scraper plate on to coal flow state information
Multipoint acquisition, feedback are carried out, and electric current, rotating speed, the driving of magnetic flux tricyclic vector are subjected to fused controlling, realizes online coal stream in mine
Detection and principal and subordinate drive the matched energy-saving control device of realtime power, are suitable for the medium and heavy coal conveyor tool of fully-mechanized mining working under mine
The occasions such as Energy Saving Control.
The present invention is achieved through the following technical solutions：A kind of permanent-magnetic variable-frequency driving drag conveyor Energy Saving Control dress
Set, including coal stream mode detection feedback module, principal and subordinate's driving power match control module, I permanent-magnetic variable-frequencies all-in-one machine, No. II forever
Magnetic variation frequency all-in-one machine and drag conveyor；
The coal stream mode detection feedback module includes I host computers, PLC controller, I numbers mode converter, II number moulds turn
Parallel operation, I current sensors, II current sensors, differential pressure pickup, differential pressure pickup head induction end, differential pressure pickup
Tail induction end, coal flow sensor, I weighing sensors, I capacitance sensors, II weighing sensors, II capacitance sensings
Device, III weighing sensors, sensor wire box, I torque sensors and II torque sensors；Wherein, the pressure difference passes
Sensor head induction end, differential pressure pickup tail induction end send collected frame head and tail coal amount information to pressure difference sensing
Device, the I current sensors, II current sensors, differential pressure pickup, coal flow sensor, I weighing sensors, I electricity
Appearance sensor, II weighing sensors, II capacitance sensors, III weighing sensors, I torque sensors and No. II turn
Square sensor sends respective collected information to PLC controller by sensor wire box respectively, at PLC controller operation
I frequency control module and No. II change are communicated information to by I numbers mode converter and II number mode converters respectively after reason
Frequency control module；
Principal and subordinate's driving power match control module include II host computers, single chip control module, I analog-digital converters,
II analog-digital converters, I speed regulators, I torque controllers, I flux regulatings device, I flux observations and torque become
Change the mold block, I current transformations module, signal compensation module, II speed regulators, II torque controllers, II magnetic linkage tune
Save device, II flux observations and torque transfer module and II current transformation modules；I frequency control module and II frequency conversion controls
Molding block sends the tach signal of I magnetoes and II magnetoes and stator current signal to I speed tune respectively
Section device, II speed regulators, I flux observations and torque transfer module and II flux observations and torque transfer module, No. I
Input of the output of speed regulator as I torque controllers, the output of I flux regulating devices is as I torque controllers
Input, the input of the output of I flux observations and torque transfer module as I flux regulating devices, I torque controllers, I
Input of the output of number flux regulating device, I flux observations and torque transfer module as I current transformation modules, I electricity
Input of the output of conversion module as I frequency control modules is flowed, I speed regulators lead to respectively with II speed regulators
It crosses I analog-digital converters and sends respective dtc signal to single chip control module, microcontroller control with II analog-digital converters
Molding block sends II host computers to after carrying out operation processing to signal, and two input torque information of single chip control module pair carries out
Thermal compensation signal is exported after processing sends II motor torque information to II torque controllers by signal compensation module, No. II
Input of the output of flux regulating device as II torque controllers, the output conduct of II flux observations and torque transfer module
The input of II flux regulating devices, II torque controllers, II flux regulatings device and II flux observations and torque transfer mould
Input of the output of block as II current transformation modules, the output of II current transformation modules is as II frequency control moulds
The input of block, the II frequency control module carries out speed governing after receiving the dtc signal compensated to II motors, real
Existing head motor is matched with the realtime power of tail motor.
A kind of permanent-magnetic variable-frequency of the present invention drives drag conveyor energy-saving control device with conventional ADS driving compared with control mode,
Advantage is：1. carrying out multiple spot to coal flow state information from motor and conveying scraper plate using multiple sensors to acquire in real time, instead
Online coal stream monitoring in mine is realized in feedback.2. the control module merged using electric current, rotating speed, the driving of magnetic flux tricyclic vector, according to inspection
The coal rheology measured, is compensated head motor torque signal and sends tail frequency conversion controller of motor to, to realize master
Reach power match in any speed trend from driving rotating speed, realizes energy-saving purpose.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of permanent-magnetic variable-frequency driving drag conveyor energy-saving control device provided by the invention.
In figure：1.I permanent-magnetic variable-frequency all-in-one machine 2.I frequency control module 3.I magneto 4.I electric currents
5. slave power match control module 6.I speed regulator 7.I analog-digital converter 8.I torques of sensor
Adjuster 9.I flux regulatings device 10.I flux observations and torque transfer module 11.I current transformation modules
12. 14. signal compensation module 15.II analog-digital converters 16.II of single chip control module 13.II host computers
Torque controller 17.II flux regulatings device 18.II flux observations and torque transfer module 19.II current transformations
Module 20.II speed regulator 21.II permanent-magnetic variable-frequency all-in-one machine 22.II frequency control module 23.II
No. 26.I friction limit square device 27.I retarder of magneto 24.II current sensor 25.I torque sensors
28. 32. sensor of drag conveyor 29.PLC controller 30.I number mode converter 31.II numbers mode converter connects
33. differential pressure pickup of wire box, 34. differential pressure pickup head induction end, 35. differential pressure pickup tail induction end 36.I
Weighing sensor 37.I capacitance sensor 38.II weighing sensor 39.II capacitance sensors 40.III
No. 44.II friction limit square device of 41. coal flow sensor 42.I host computer 43.II torque sensors of weighing sensor
45.II retarders.
Specific implementation mode
Further more detailed description is made to technical scheme of the present invention With reference to embodiment.Obviously, it is retouched
The embodiment stated is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
The every other embodiment that those of ordinary skill in the art are obtained under the premise of not making creative work, should all belong to
The scope of protection of the invention.
Refering to fig. 1, Fig. 1 is a kind of structure of permanent-magnetic variable-frequency driving drag conveyor energy-saving control device provided by the invention
Schematic diagram.The device includes：Coal stream mode detects feedback module, principal and subordinate's driving power match control module 5, I permanent-magnetic variable-frequencies
All-in-one machine 1, II permanent-magnetic variable-frequencies all-in-one machine 21 and drag conveyor 28；The coal stream mode detection feedback module includes on No. I
Position machine 42, PLC controller 29, I numbers mode converter 30, II numbers mode converter 31, I current sensors 4, II electric currents pass
Sensor 24, differential pressure pickup 33, differential pressure pickup head induction end 34, differential pressure pickup tail induction end 35, coal flow sensor
41, I weighing sensors 36, I capacitance sensors 37, II weighing sensors 38, II capacitance sensors 39, III are known as
Retransmit sensor 40, sensor wire box 32, I torque sensors 25 and II torque sensors 43；Wherein, the pressure difference sensing
Device head induction end 34, differential pressure pickup tail induction end 35 send collected frame head and tail coal amount information to pressure difference sensing
Device 33, the I current sensors 4, II current sensors 24, differential pressure pickup 33, coal flow sensor 41, I are known as re-transmission
Sensor 36, I capacitance sensors 37, II weighing sensors 38, II capacitance sensors 39, III weighing sensors 40, I
Number torque sensor 25 and II torque sensors 43 pass through sensor wire box 32 respectively will respectively collected information transmission
To PLC controller 29, pass through I numbers mode converter 30 and II numbers mode converter 31 respectively after 29 operation of PLC controller processing
Communicate information to I frequency control module 2 and II frequency control module 22；
Principal and subordinate's driving power match control module 5 includes II host computers 13, single chip control module 12, I moduluses turn
Parallel operation 7, II analog-digital converters 15, I speed regulators 6, I torque controllers 8, I flux regulatings device 9, I magnetic linkages are seen
It surveys and torque transfer module 10, I current transformations module 11, signal compensation module 14, II speed regulators 20, II torques
Adjuster 16, II flux regulatings device 17, II flux observations and torque transfer module 18 and II current transformations module 19；I
Number frequency control module 2 respectively believes the rotating speed of I magnetoes 3 and II magnetoes 23 with II frequency control module 22
Number with stator current signal send I speed regulators 6, II speed regulators 20, I flux observations and torque transfer mould to
Block 10 and II flux observations and torque transfer module 18, the output of I speed regulators 6 is as the defeated of I torque controllers 8
Enter, the input of I flux regulatings device 9 exported as I torque controllers 8, I flux observations and torque transfer module 10
Export the input as I flux regulatings device 9, I torque controllers 8, I flux regulatings device 9, I flux observations and torque
Input of the output of conversion module 10 as I current transformations module 11, the output of I current transformations module 11 is as No. I
The input of frequency control module 2, I speed regulators 6 and II speed regulators 20 respectively by I analog-digital converters 7 with
II analog-digital converters 15 send respective dtc signal to single chip control module 12, and single chip control module 12 is to signal
II host computers 13 are sent to after carrying out internal processes operation processing, and single chip control module 12 carries out two input torque information
Thermal compensation signal is exported after processing sends 23 moment information of II motors to II torque controllers by signal compensation module 14
Input of the output of 16, II flux regulating devices 17 as II torque controllers 16, II flux observations and torque transfer mould
Input of the output of block 18 as II flux regulatings device 17, II torque controllers 16, II flux regulatings device 17 and No. II
The input of flux observation and torque transfer module 18 exported as II current transformations module 19, II current transformation modules
Input of 19 output as II frequency control module 22, the II frequency control module 22 are receiving turn compensated
Speed governing is carried out to II motors 23 after square signal, realizes that head motor is matched with the realtime power of tail motor.
The present invention is to provide a kind of coal stream mode combination permanent-magnetic variable-frequency all-in-one machine real-time speed regulatings according to variation, various
Speed becomes to holding down the energy-saving control device of power match, according to attached drawing 1 by I weighing sensors 36, I capacitance sensors
37, II weighing sensors 38, II capacitance sensors 39, III weighing sensors 40, differential pressure pickup head induction end
34, differential pressure pickup tail induction end 35 is attached to below conveying scraper plate, and differential pressure pickup 33, coal flow sensor 41 are attached to
28 side of drag conveyor position, by I current sensors 4, I torque sensors 25 and II current sensors 24, II torques
Sensor 43 is attached to I permanent-magnetic variable-frequencies all-in-one machine 1 and 21 side of II permanent-magnetic variable-frequencies all-in-one machine position respectively.First by I electric currents
Sensor 4, II current sensors 24, differential pressure pickup 33, coal flow sensor 41, I weighing sensors 36, I capacitances pass
Sensor 37, II weighing sensors 38, II capacitance sensors 39, III weighing sensors 40,25 and of I torque sensors
II torque sensors 43 send collected dynamic coal flow information to PLC controller by sensor wire box 32 jointly
29, internal processes operation processing then is carried out to the coal stream change information being collected by PLC controller 29, then respectively through I numbers
Mode converter 30 sends moment information to I frequency control module 2 and II frequency control moulds with II numbers mode converter 31
Block 22 realizes the performance for changing according to coal stream mode and carrying out real-time speed regulating, while PLC controller 29 passes the coal stream information of variation
I host computers 42 are given, realize online coal stream monitoring in real time in mine.
According to attached drawing 1, II host computers 13, single chip control module 12, I analog-digital converters 7, II analog-digital converters
15, I speed regulators 6, I torque controllers 8, I flux regulatings device 9, I flux observations and torque transfer module 10, I
Number current transformation module 11, signal compensation module 14, II speed regulators 20, II torque controllers 16, II magnetic linkage tune
Section device 17, II flux observations and torque transfer module 18, II current transformations module 19 collectively constitute principal and subordinate's driving power
With control module 5, I frequency control module 2 is with II frequency control module 22 respectively by I magnetoes 3 and II permanent magnetism
The tach signal of motor 23 sends I speed regulators 6, II speed regulators 20 and I magnetic linkages to stator current signal
Observation and torque transfer module 10, II flux observations and torque transfer module 18, the output of I speed regulators 6 is as No. I
The input of torque controller 8, input of the output as I torque controllers 8 of I flux regulatings device 9, I flux observations and
Input of the output of torque transfer module 10 as I flux regulatings device 9, I torque controllers 8, I flux regulatings device 9, I
Input of the output of number flux observation and torque transfer module 10 as I current transformations module 11, I current transformation modules
Input of 11 output as I frequency control module 2；I speed regulators 6 pass through I respectively with II speed regulators 20
Number analog-digital converter 7 sends respective dtc signal to single chip control module 12, microcontroller with II analog-digital converters 15
Control module 12 sends II host computers 13 to after carrying out internal processes operation processing to signal；Single chip control module 12 is to two
Output thermal compensation signal transmits 23 moment information of II motors by signal compensation module 14 after input torque information is handled
To II torque controllers 16, the input of II flux regulatings device 17 exported as II torque controllers 16, II magnetic linkages
The input of observation and torque transfer module 18 exported as II flux regulatings device 17, II torque controllers 16, II magnetic
The input of chain adjuster 17 and II flux observations and torque transfer module 18 exported as II current transformations module 19,
Input of the output of II current transformations module 19 as II frequency control module 22, the II frequency control module 22 exist
Speed governing is carried out to II motors 23 after receiving the dtc signal compensated, realizes the realtime power of head motor and tail motor
Matching.
It these are only embodiments of the present invention, be not intended to limit the scope of the invention, it is every to utilize the present invention
Equivalent structure or equivalent flow shift made by specification and accompanying drawing content is applied directly or indirectly in other relevant technologies
Field is included within the scope of the present invention.
Claims (1)
1. a kind of permanent-magnetic variable-frequency drives drag conveyor energy-saving control device, which is characterized in that detect and feed back including coal stream mode
Module, principal and subordinate's driving power match control module（5）, I permanent-magnetic variable-frequency all-in-one machines（1）, II permanent-magnetic variable-frequency all-in-one machines（21）
And drag conveyor（28）；
The coal stream mode detection feedback module includes I host computers（42）, PLC controller（29）, I number mode converters
（30）, II number mode converters（31）, I current sensors（4）, II current sensors（24）, differential pressure pickup（33）, pressure
Gap sensor head induction end（34）, differential pressure pickup tail induction end（35）, coal flow sensor（41）, I weighing sensors
（36）, I capacitance sensors（37）, II weighing sensors（38）, II capacitance sensors（39）, III weighing sensors
（40）, sensor wire box（32）, I torque sensors（25）With II torque sensors（43）；Wherein, the pressure difference sensing
Device head induction end（34）, differential pressure pickup tail induction end（35）Send collected frame head and tail coal amount information to pressure difference
Sensor（33）, the I current sensors（4）, II current sensors（24）, differential pressure pickup（33）, coal flow sensor
（41）, I weighing sensors（36）, I capacitance sensors（37）, II weighing sensors（38）, II capacitance sensors
（39）, III weighing sensors（40）, I torque sensors（25）With II torque sensors（43）Pass through sensor respectively
Terminal box（32）Send respective collected information to PLC controller（29）, PLC controller（29）Lead to respectively after operation processing
Cross I number mode converters（30）With II number mode converters（31）Communicate information to I frequency control modules（2）Become with No. II
Frequency control module（22）；
Principal and subordinate's driving power match control module（5）Including II host computers（13）, single chip control module（12）, No. I
Analog-digital converter（7）, II analog-digital converters（15）, I speed regulators（6）, I torque controllers（8）, I magnetic linkage tune
Save device（9）, I flux observations and torque transfer module（10）, I current transformation modules（11）, signal compensation module（14）,II
Number speed regulator（20）, II torque controllers（16）, II flux regulating devices（17）, II flux observations and torque transfer
Module（18）With II current transformation modules（19）；I frequency control modules（2）With II frequency control modules（22）Respectively will
I magnetoes（3）With II magnetoes（23）Tach signal and stator current signal send I speed regulators to
（6）, II speed regulators（20）, I flux observations and torque transfer module（10）And II flux observations and torque transfer
Module（18）, I speed regulators（6）Output as I torque controllers（8）Input, I flux regulating devices（9）'s
Output is used as I torque controllers（8）Input, I flux observations and torque transfer module（10）Output as I magnetic linkages
Adjuster（9）Input, I torque controllers（8）, I flux regulating devices（9）, I flux observations and torque transfer module
（10）Output be used as I current transformation modules（11）Input, I current transformation modules（11）Output as No. I become
Frequency control module（2）Input, I speed regulators（6）With II speed regulators（20）Pass through I analog-digital converters respectively
（7）With II analog-digital converters（15）Send respective dtc signal to single chip control module（12）, microcontroller control mould
Block（12）II host computers are sent to after carrying out internal processes operation processing to signal（13）, single chip control module（12）To two
Output thermal compensation signal passes through signal compensation module after input torque information is handled（14）By II motors（23）Moment information
Send II torque controllers to（16）, II flux regulating devices（17）Output as II torque controllers（16）It is defeated
Enter, II flux observations and torque transfer module（18）Output as II flux regulating devices（17）Input, II torques
Adjuster（16）, II flux regulating devices（17）With II flux observations and torque transfer module（18）Output be used as No. II
Current transformation module（19）Input, II current transformation modules（19）Output as II frequency control modules（22）It is defeated
Enter, the II frequency control module（22）To II motors after receiving the dtc signal compensated（23）Speed governing is carried out,
Realize that head motor is matched with the realtime power of tail motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810492071.6A CN108718163B (en) | 2018-05-22 | 2018-05-22 | Energy-saving control device of permanent magnet variable frequency driving scraper conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810492071.6A CN108718163B (en) | 2018-05-22 | 2018-05-22 | Energy-saving control device of permanent magnet variable frequency driving scraper conveyor |
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| Publication Number | Publication Date |
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| CN108718163A true CN108718163A (en) | 2018-10-30 |
| CN108718163B CN108718163B (en) | 2021-12-21 |
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| CN201810492071.6A Active CN108718163B (en) | 2018-05-22 | 2018-05-22 | Energy-saving control device of permanent magnet variable frequency driving scraper conveyor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752705A (en) * | 2019-10-15 | 2020-02-04 | 中国矿业大学(北京) | Intelligent semi-direct-drive type scraper conveyor with parallel permanent magnet motors |
| CN114013954A (en) * | 2021-12-15 | 2022-02-08 | 国家能源集团乌海能源有限责任公司 | Automatic power balancing method and system based on scraper conveyor multi-loop frequency converter |
| CN114337382A (en) * | 2021-11-29 | 2022-04-12 | 中国煤炭科工集团太原研究院有限公司 | Protection method and device for mining equipment |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752705A (en) * | 2019-10-15 | 2020-02-04 | 中国矿业大学(北京) | Intelligent semi-direct-drive type scraper conveyor with parallel permanent magnet motors |
| CN110752705B (en) * | 2019-10-15 | 2020-08-11 | 中国矿业大学(北京) | Intelligent semi-direct-drive type scraper conveyor with parallel permanent magnet motors |
| CN114337382A (en) * | 2021-11-29 | 2022-04-12 | 中国煤炭科工集团太原研究院有限公司 | Protection method and device for mining equipment |
| CN114337382B (en) * | 2021-11-29 | 2023-06-20 | 中国煤炭科工集团太原研究院有限公司 | Protection method and device for mining equipment |
| CN114013954A (en) * | 2021-12-15 | 2022-02-08 | 国家能源集团乌海能源有限责任公司 | Automatic power balancing method and system based on scraper conveyor multi-loop frequency converter |
| CN114013954B (en) * | 2021-12-15 | 2023-08-18 | 国家能源集团乌海能源有限责任公司 | Power automatic balancing method and system based on multi-loop frequency converter of scraper conveyor |
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