CN208046236U - The special filtering compensation device of frequency converter - Google Patents
The special filtering compensation device of frequency converter Download PDFInfo
- Publication number
- CN208046236U CN208046236U CN201820499695.6U CN201820499695U CN208046236U CN 208046236 U CN208046236 U CN 208046236U CN 201820499695 U CN201820499695 U CN 201820499695U CN 208046236 U CN208046236 U CN 208046236U
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- China
- Prior art keywords
- box body
- frequency converter
- filtering compensation
- inserting groove
- mounting seat
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model is related to a kind of special filtering compensation devices of frequency converter, apparatus main body including the circuit board for being provided with active power filtering compensation circuit, the apparatus main body includes mounting seat, box body and discharge pipe, mounting hole and inserting groove positioned opposite are equipped in mounting seat, the both ends distribution of inserting groove is open and blocks setting, tray interior is hollow, being provided in the side of box body can be by the open inserting block being inserted into of inserting groove, corresponding to inserting block, the other side of box body is provided with removable cover board, circuit board is fixed in box body, the bottom of box body be provided with air inlet hole and with multiple connecting terminals of circuit board electrical connection, it is equipped with axial fan at the top of box body, and the air inlet of axial fan is penetrated through in box body, it is formed with duct collar in the air outlet of axial fan, one end of discharge pipe is connected at air outlet.The special filtering compensation device of frequency converter of the utility model can be used for the filtering compensation of frequency converter, and can guarantee its normal work.
Description
Technical field
The utility model belongs to electrical facility technical field more particularly to a kind of special filtering compensation device of frequency converter.
Background technology
In the prior art, the power supply quality of frequency converter has large effect to the reliability service of frequency converter, now with
The increase of network load, the network structure of electric system and electrical distribution can change, this has resulted in power system reactive power
The unreasonable and relatively low voltage level situation of distribution.Meanwhile the reduction of power factor of electric network and voltage can electrically to set
It is standby to be not fully utilized, electrical grid transmission ability is reduced, and the increase of grid loss can be caused, and such as frequency converter is non-linear
The addition of load, and the voltage and current harmonic wave of power grid can be made to increase and deteriorate grid supply quality, influencing electric system just
Often operation.Therefore, it is necessary to take filtering compensation technology for carrying out reactive-load compensation and harmonics restraint, to ensure the normal of load
It uses.
But, the Electric Appliance Cabinet installed for frequency converter is not easy to be filtered benefit since marginal space is limited
The installation of device is repaid, and in existing filtering compensation circuit, because the heat of generation is larger, if not designing preferable heat dissipation machine
Structure, and if being radiated using the gravity-flow ventilation in Electric Appliance Cabinet, it frequently can lead to break down, and be difficult to ensure prolonged
Normal operation.
Utility model content
For above description, the purpose of this utility model is to provide a kind of special filtering compensation device of frequency converter, so as to
In the installation in electrical cabinet, and there can be preferable heat-sinking capability.
The technical solution of the utility model is achieved in the following ways：
A kind of special filtering compensation device of frequency converter, including it is provided with the device master of the circuit board of active power filtering compensation circuit
Body, described device main body include：
Mounting seat is equipped with mounting hole in the mounting seat, and is provided in the two opposite sides of the mounting seat
Inserting groove positioned opposite, the open at one end setting of the inserting groove, the other end of the inserting groove block setting；
Box body, the tray interior is hollow, is provided with and can be inserted by the opening of the inserting groove in the side of the box body
Inserting block in the inserting groove corresponds to the inserting block, the other side of the box body is provided with removable cover board, institute
Circuit board is stated to be fixed in the box body, the bottom of the box body be provided with air inlet hole and with the circuit board electrical connection
Multiple connecting terminals are equipped with axial fan, and the air inlet of the axial fan and the box at the top of the box body
Perforation in vivo, duct collar is formed in the air outlet of the axial fan；
One end of discharge pipe, the discharge pipe is connected at the air outlet.
As the restriction to aforesaid way, further include can holding the open-mouth of the inserting groove end cap.
As the restriction to aforesaid way, lightening hole is provided in the mounting seat.
As the restriction to aforesaid way, the air inlet hole is distributed in bottom and the box body at least one of the box body
The bottom of a side end face.
As the restriction to aforesaid way, the air inlet hole is strip hole.
The utility model has the advantage of：
The special filtering compensation device of frequency converter of the utility model, by the board structure of circuit with filtering compensation circuit,
The active power filtering compensation work of frequency converter can be achieved, and by the mounting seat with inserting groove, and be arranged on box body and insert
Block is filled, pedestal can be first fixedly mounted in when installation, and the installation of box body is then realized by inserting mode, so may not only facilitate installation
Operation, meanwhile, it is vertical or lateral according to installation space, also can accordingly adjusts mounting seat and the arranged direction of box body, to
Conducive to the installation in electrical cabinet.
In addition, by setting wind turbine in the utility model, and in fan outlet connection discharge pipe, it can be in box body
Circuit board carries out forced heat radiation, to ensure heat-sinking capability, meanwhile, the high temperature air of discharge can also be arranged by the guiding of discharge pipe
It to outside electrical cabinet, is again introduced into box body, can be also avoided to other electricity in electrical cabinet to not only can avoid high temperature air
Gas part impacts.
In addition, in the utility model end cap setting, the stability that box body is arranged in mounting seat can be improved, pacifying
Dress pedestal and box body act on particularly evident when being lateral arrangement.The design of lightening hole can reduce the weight of device entirety, be conducive to it
Lightweight, and air admission hole is respectively arranged in box body bottom and side, can ensure air inflow, meanwhile, air admission hole can then increase box
The aesthetics of body.
Description of the drawings
Fig. 1 is the structural schematic diagram of the special filtering compensation device of frequency converter in specific embodiment of the present invention；
Fig. 2 is the structural schematic diagram of mounting seat in specific embodiment of the present invention；
Fig. 3 is the positive structural schematic diagram of box body in specific embodiment of the present invention；
Fig. 4 is the structural schematic diagram at box body back in specific embodiment of the present invention；
Fig. 5 is the structural schematic diagram of end cap in specific embodiment of the present invention；
Fig. 6 is the structure principle chart of filtering compensation circuit in specific embodiment of the present invention.
Specific implementation mode
In the description of the present invention, it should be noted that the orientation of the instructions such as term "upper", "lower", "inner", " back of the body "
Or position relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model and simplification is retouched
It states, does not indicate or imply the indicated device or element must have a particular orientation, with specific azimuth configuration and operation,
Therefore it should not be understood as limiting the present invention.In addition, term " first ", " second " are used for description purposes only, and cannot
It is interpreted as indicating or implying relative importance.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
The present embodiment is related to a kind of special filtering compensation device of frequency converter, with having dedicated for nonlinear-load frequency converter
Source filtering compensation work, to ensure the reliability service of frequency converter, and the special filtering compensation device of the frequency converter includes being provided with
The apparatus main body of the circuit board of active power filtering compensation circuit, and it is specific as shown in Figure 1, and which includes then useful
In the mounting seat 1 being fixed in the electrical cabinet in installation frequency converter, and it is mounted in the mounting seat 1 in a manner of inserting
Box body 2.
As shown in Figure 2, the mounting seat 1 of the present embodiment be rectangle structure, the two opposite sides of mounting seat 1,
That is two long sides of mounting seat 1 are provided with inserting groove 11 positioned opposite, two opposite end faces of the inserting grooves 11 of both sides
For open-like shape, meanwhile, one end of inserting groove 11 is set as blocking by blocking with the sprue 12 of 1 integral structure of mounting seat
The other end of shape, inserting groove 11 is then open setting, for the inserting of box body 2.
Mounting hole 13 is provided in mounting seat 1, mounting hole 13 is four apex angles difference cloth close to mounting seat 1
Four set, and deep gouge shape is also configured as at the aperture of mounting hole 13, can be used for accommodating the head of fixing screws.In addition, this
It is also provided at the middle part of mounting seat 1 in favor of the lightweight of device entirety in embodiment to reduce the weight of mounting seat 1
There are lightening hole 14, lightening hole 14 to be designed to strip with the rectangle structure of mounting seat 1.
For the structure of the box body 2 of the present embodiment shown in Fig. 3 and Fig. 4, which is hollow, circuit above-mentioned
Plate is fixed in box body 2, is provided in the inserting groove 11 that the side of box body 2 corresponds in mounting seat 1 and is similarly positioned in box body 2
The inserting block 24 of two opposite sides, inserting block 24 can be inserted by the opening of inserting groove 11 in it, to realize in mounting seat 1
Mounting arrangements.The inserting block 21 of both sides is connected in especially by connecting plate 24 on box body 2 in the present embodiment, passes through connecting plate 24
Setting, can be conducive in the insertion inserting groove 11 that more smooth out of inserting block 21.Corresponding to inserting block 24, the present embodiment is in box body 2
The other side be provided with removable cover board 23, cover board 23 can be specifically connected by way of clamping, and cover board 23 is set as
The installation fixation of circuit board and cabling provide action pane.
In the present embodiment, air inlet hole 25, and multiple wiring with circuit board electrical connection are additionally provided in the bottom of box body 2
Terminal 22.Air inlet hole 25 is strip hole, and air inlet hole 25 is distributed in the bottom of box body 2 and two opposite side end faces of box body 2
Bottom.In addition, being then provided with axial fan 26 at the top of box body 2, passed through in the air inlet and box body 2 of axial fan 26
It is logical, it is then formed with duct collar 27 in the air outlet of axial fan 26, while being then connected in figure at the duct collar 27
Unshowned discharge pipe.
The discharge pipe of the present embodiment specifically uses plastic film capicitor, and the one end being connected with duct collar 27 can pass through
The form of screw thread or clip is attached, and the other end of discharge pipe can be then introduced directly by the trepanning on electrical cabinet outside cabinet,
Or it also can be by the way that the end of discharge pipe be fixed at the ventilation shutter of electrical cabinet, so that the hot-air in discharge pipe is logical
Cross shutter discharge.
Mounting seat 1 and box body 2 may be selected to be vertically arranged or lateral arrangement according to the space in electrical cabinet in the present embodiment,
To ensure the stability of installation of the box body 2 in mounting seat 1, box body 2 is especially placed in lateral arrangement by mounting seat 1
Upper abjection, the open-mouth in 11 end of inserting groove are also provided with end cap 3 as shown in Figure 5, are set respectively at the both ends of end cap 3
It is equipped with fixture block 31, multiple tracks anti-slip tank 32 is also formed on fixture block 31, thus after box body 2 is plugged in mounting seat 1, by end cap
The fixture block 31 at 3 both ends is caught in fixation at the port of inserting groove 11.
Active filter circuit on the circuit board of the present embodiment uses existing active filter circuit structure, as one
Kind example, the structure of the circuit is as shown in Figure 6, at this point, it generally comprises the control being connect with three phase network by mutual inductor
Molding block 5, the drive module 8 being connect with control module 5, and the AC module 4 that is driven by drive module 8, and AC module 4
It is connected on three phase network by mutual inductor.In addition, further including the capacitance compensation controller 7, Yi Jiyou for being controlled by control module 5
The capacitive compensator 6 that capacitance compensation controller 7 controls, capacitive compensator 6 are then connected directly on three phase network, frequency converter 100
Power grid end positioned at filtering and compensation circuit downstream.
In the present embodiment, the mutual inductor at control module 5 is connect with power grid, and for obtaining power network signal, power network signal is taken
With corresponding harmonic signal, control module 5 is used to calculate the harmonic signal in power grid, and according to calculated harmonic signal
To control drive module 8.Become flow module 4 and include polar capacitor and three triode groups being electrically connected respectively with three-phase, each
Triode group includes two triodes.In same triode group, the source level of one of triode and another triode
Drain electrode connect the same mutual inductor, the anode of polar capacitor connects the drain electrode of one of triode, and cathode then connects another three pole
The source electrode of pipe.The grid of two triodes is then connected with drive module, and drive module 8 sends out pwm signal, controls two three poles
Thus the break-make of pipe generates signal identical as harmonic frequency signal but opposite in phase, to balance out the letter of the harmonic wave in power grid
Number, realize harmonic filtration.
Wherein, two triodes can be used IGBT, drive mould, 5 and control module 8 physical circuit then can be used it is existing
Common circuit structure, will not be described in great detail herein in APF.The output end of the present embodiment capacitive compensator 6 is linked into power grid, control
Molding block 5 transmits the power network signal that mutual inductor obtains to capacitance compensation controller 7, thus by power factor feedback to capacitance compensation
Controller 7 controls capacitive compensator 6 by capacitance compensation controller 7, makes capacitive compensator 6 into reactive power compensation.This reality
It applies a capacitance compensation controller 7 and capacitive compensator 6 and the existing circuit structure of the prior art also can be used, such as China is practical new
Dependency structure in type patent CN206420976U.
The special filtering compensation device of frequency converter of the present embodiment can realize the active power filtering compensation work of frequency converter, be conducive to
Installation in electrical cabinet, and forced heat radiation can be carried out to circuit board, ensure heat-sinking capability, while can also avoid to electrical cabinet
Other interior electricity pieces impact, and have good practicability.
The foregoing is merely the preferred embodiment of the utility model, but the scope of protection of the utility model is not limited to
This, any technical person familiar with the field within the technical scope disclosed by the utility model, technology according to the present utility model
Design is subject to the technical solution obtained by equivalent substitution or change, should all be covered by the scope of protection of the utility model.
Claims (5)
1. a kind of special filtering compensation device of frequency converter, including it is provided with the device master of the circuit board of active power filtering compensation circuit
Body, which is characterized in that described device main body includes：
Mounting seat is equipped with mounting hole in the mounting seat, and is provided with relatively in the two opposite sides of the mounting seat
The inserting groove of arrangement, the open at one end setting of the inserting groove, the other end of the inserting groove block setting；
Box body, the tray interior is hollow, the side of the box body be provided with can by the inserting groove it is open be inserted into described in
Inserting block in inserting groove corresponds to the inserting block, the other side of the box body is provided with removable cover board, the electricity
Road plate is fixed in the box body, and the bottom of the box body is provided with air inlet hole and multiple with the circuit board electrical connection
Connecting terminal is equipped with axial fan at the top of the box body, and in the air inlet of the axial fan and the box body
Perforation, duct collar is formed in the air outlet of the axial fan；
One end of discharge pipe, the discharge pipe is connected at the air outlet.
2. the special filtering compensation device of frequency converter according to claim 1, it is characterised in that：Further include can holding described
The end cap of the open-mouth of inserting groove.
3. the special filtering compensation device of frequency converter according to claim 2, it is characterised in that：It is set in the mounting seat
It is equipped with lightening hole.
4. the special filtering compensation device of frequency converter according to claim 2, it is characterised in that：The air inlet hole is distributed in institute
State the bottom of box body and the bottom of at least one side end face of the box body.
5. the special filtering compensation device of frequency converter according to claim 4, it is characterised in that：The air inlet hole is strip
Hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820499695.6U CN208046236U (en) | 2018-04-10 | 2018-04-10 | The special filtering compensation device of frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820499695.6U CN208046236U (en) | 2018-04-10 | 2018-04-10 | The special filtering compensation device of frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208046236U true CN208046236U (en) | 2018-11-02 |
Family
ID=63944204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820499695.6U Active CN208046236U (en) | 2018-04-10 | 2018-04-10 | The special filtering compensation device of frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208046236U (en) |
-
2018
- 2018-04-10 CN CN201820499695.6U patent/CN208046236U/en active Active
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