CN207926182U - A kind of full frequency conversion drilling machine power drive system - Google Patents
A kind of full frequency conversion drilling machine power drive system Download PDFInfo
- Publication number
- CN207926182U CN207926182U CN201721924422.3U CN201721924422U CN207926182U CN 207926182 U CN207926182 U CN 207926182U CN 201721924422 U CN201721924422 U CN 201721924422U CN 207926182 U CN207926182 U CN 207926182U
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- electrically connected
- busbar
- output end
- input terminal
- generator
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- Control Of Multiple Motors (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The utility model discloses a kind of full frequency conversion drilling machine power drive systems, including generator, the output end of the generator and the input terminal of rectifier are electrically connected, the input terminal of the output end of the rectifier and the first busbar is electrically connected, the brake unit is electrically connected with braking resistor, the inverter and the second busbar are electrically connected, the output end of second busbar and the input terminal of operation control system are electrically connected, by being electrically connected with second switch, the output end of the second switch and stand-by generator is electrically connected second busbar.The utility model is simple in structure, inverter and the second busbar are electrically connected, the energy of feedback on the first busbar can be used to greatest extent, then it further powers for motor control center and operation control system, while saving electric energy, eliminates conventional electric generators grid-connection control system, using the scheme of common DC bus, cost has been saved, securely and reliably, there is market value.
Description
Technical field
The utility model is related to electromechanical drive area, specially a kind of full frequency conversion drilling machine power drive system.
Background technology
Existing frequency conversion drilling machine drive system includes in generator control system, VFD frequency changing driving systems, Motor Control
The heart (MCC), low-voltage distribution system and control operating system.Generator control system in this kind of drive system needs grid-connected synchronization
Operation, at the same VFD frequency changing driving systems be common DC bus structure, therefore, existing frequency conversion drilling machine drive system cost compared with
Height, and electric energy cannot be utilized adequately.
Utility model content
The purpose of this utility model is to provide a kind of full frequency conversion drilling machine power drive systems, to solve in above-mentioned background technology
The problem of cost of proposition is higher and electric energy can not make full use of.
To achieve the above object, the utility model provides the following technical solutions：A kind of full frequency conversion drilling machine power drive system, packet
Include generator and the first busbar, the output end of the generator and the input terminal of rectifier are electrically connected, the rectifier it is defeated
Outlet and the input terminal of the first busbar are electrically connected, and the output end of first busbar and inverter, inverter and braking are single
The input terminal of member is electrically connected, and the input terminal of the output end of the inverter and motor is electrically connected, the motor it is defeated
Outlet and the input terminal of slush pump, turntable and winch are electrically connected, and the brake unit is electrically connected with braking resistor, described inverse
Variable power source and the second busbar are electrically connected, and second busbar is electrically connected with first switch, the first switch and motor
Control centre is electrically connected, and the output end of second busbar and the input terminal of operation control system are electrically connected, and described second
By being electrically connected with second switch, the output end of the second switch and stand-by generator is electrically connected busbar.
Preferably, the generator is directly connected to rectifier.
Preferably, DC 810V 2P breakers are housed on first busbar.
Preferably, second busbar is auxiliary electrical equipment, and the power supply mode of the second busbar uses inverter side
Formula.
Preferably, the generator is two or more.
Compared with prior art, the utility model has the beneficial effects that：
1. cancel generator connecting in parallel with system control system, it is more cost-effective using the scheme of common DC bus.
2. motor control center (MCC) is powered by inverter, the energy of feedback on busbar can be used to greatest extent,
Reach energy-saving effect.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
In figure：1 generator, 2 rectifiers, 3 first busbares, 4 slush pumps, 5 turntables, 6 winches, 7 braking resistors, 8 inversions electricity
Source, 9 motor, 10 brake units, 11 first switches, 12 operation control systems, 13 motor control center, 14 spare power generations
Machine, 15 second switches, 16 second busbares, 17 inverters.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 1, the utility model provides a kind of technical solution：A kind of full frequency conversion drilling machine power drive system, including hair
Motor 1 and the first busbar 3, the output end of the generator 1 and the input terminal of rectifier 2 are electrically connected, the rectifier 2 it is defeated
Outlet and the input terminal of the first busbar 3 are electrically connected, output end and inverter 17, inverter 8 and the system of first busbar 3
The input terminal of moving cell 10 is electrically connected, and the output end of the inverter 17 is electrically connected with the input terminal of motor 9, the electricity
The output end of motivation 9 is electrically connected with the input terminal of slush pump 4, turntable 5 and winch 6, the brake unit 10 and braking resistor 7
It is electrically connected, the inverter 8 and the second busbar 16 are electrically connected, and second busbar 16 electrically connects with first switch 11
It connects, the first switch 11 is electrically connected with motor control center 13, the output end and operation and control of second busbar 16
The input terminal of system 12 is electrically connected, and second busbar 16 with second switch 15 by being electrically connected, the second switch 15
It is electrically connected with the output end of stand-by generator 14.
Specifically, the generator 1 is directly connected to rectifier 2, it is converted into first (direct current) busbar power supply, saves generator
1 grid-connected system.
Specifically, being equipped with DC 810V 2P breakers on first busbar 3, dc circuit breaker refers to transformer tap
Switch voltage regulating mode, can on-load switch gear because this kind of voltage regulating mode is during transferring the files, there is no disconnected in short-term
Journey, by a transition resistance transition, as soon as it is converted from a shelves to another gear, to also be not present what load current disconnected
Arcing process.It is generally used for the transformer that strictly need to often transfer the files to voltage request.Specifically, being equipped on second busbar 16
400V AC 3P breakers.
Specifically, second busbar 16 is auxiliary electrical equipment, and the power supply mode of the second busbar 16 is using inversion electricity
Source mode.
Specifically, the generator 1 is two or more, director's time service, the excessive problem of load are avoided.
Operation principle：When work, generator 1 works, and then the alternating current that generator 1 generates is converted into directly by rectifier 2
Galvanic electricity, and direct current is electrically communicate on the first busbar 3, then direct current is converted into exchanging by the first busbar 3 by inverter 17
Electricity provides electric energy for adjustable frequency motor 9, and then adjustable frequency motor 9 drives slush pump 4, turntable 5 and winch 6 to work, while first
Electric energy on busbar 3 is powered for braking resistor 7 again by brake unit 10, and the first busbar 3 is electrically connected with inverter 8, inverse
Variable power source 8 and the second busbar 16 are electrically connected, and can use the energy of feedback on the first busbar 3 to greatest extent, then further
It is that motor control center 13 powers with operation control system 12, has saved electric energy；Meanwhile this kind of system structure eliminates biography
System generator connecting in parallel with system control system has saved cost using the scheme of common DC bus.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is appreciated that can these embodiments be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of full frequency conversion drilling machine power drive system, including generator (1) and the first busbar (3), it is characterised in that：The power generation
The output end of machine (1) and the input terminal of rectifier (2) are electrically connected, the output end of the rectifier (2) and the first busbar (3)
Input terminal is electrically connected, output end and inverter (17), inverter (8) and the brake unit (10) of first busbar (3)
Input terminal be electrically connected, the output end of the inverter (17) and the input terminal of motor (9) are electrically connected, the motor
(9) input terminal of output end and slush pump (4), turntable (5) and winch (6) is electrically connected, the brake unit (10) and system
Dynamic resistance (7) is electrically connected, and the inverter (8) is electrically connected with the second busbar (16), second busbar (16) and the
One switch (11) is electrically connected, and the first switch (11) is electrically connected with motor control center (13), second busbar
(16) output end and the input terminal of operation control system (12) are electrically connected, second busbar (16) by with second switch
(15) it is electrically connected, the second switch (15) and the output end of stand-by generator (14) are electrically connected.
2. a kind of full frequency conversion drilling machine power drive system according to claim 1, it is characterised in that：The generator (1) is straight
Rectifier (2) is connect in succession.
3. a kind of full frequency conversion drilling machine power drive system according to claim 1, it is characterised in that：First busbar (3)
It is upper that DC 810V 2P breakers are housed.
4. a kind of full frequency conversion drilling machine power drive system according to claim 1, it is characterised in that：Second busbar (16)
It is auxiliary electrical equipment, and the power supply mode of the second busbar (16) uses inverter mode.
5. a kind of full frequency conversion drilling machine power drive system according to claim 1, it is characterised in that：The generator (1) is
Two or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721924422.3U CN207926182U (en) | 2017-12-23 | 2017-12-23 | A kind of full frequency conversion drilling machine power drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721924422.3U CN207926182U (en) | 2017-12-23 | 2017-12-23 | A kind of full frequency conversion drilling machine power drive system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207926182U true CN207926182U (en) | 2018-09-28 |
Family
ID=63615860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721924422.3U Active CN207926182U (en) | 2017-12-23 | 2017-12-23 | A kind of full frequency conversion drilling machine power drive system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207926182U (en) |
-
2017
- 2017-12-23 CN CN201721924422.3U patent/CN207926182U/en active Active
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