CN206250961U - A kind of control circuit for oil immersion line motor - Google Patents
A kind of control circuit for oil immersion line motor Download PDFInfo
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- CN206250961U CN206250961U CN201621338787.3U CN201621338787U CN206250961U CN 206250961 U CN206250961 U CN 206250961U CN 201621338787 U CN201621338787 U CN 201621338787U CN 206250961 U CN206250961 U CN 206250961U
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- Prior art keywords
- phase
- uncontrollable rectifier
- phase bridge
- control circuit
- rectifier module
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a kind of control circuit for oil immersion line motor, it includes 12 pulsating wave auto-transformer, the first three-phase bridge uncontrollable rectifier module REC1, the second three-phase bridge uncontrollable rectifier module REC2, the first paralleing reactor L1, the second paralleing reactor L2, first, second, third IGBT half-bridge modules, first, second, and third output inductor L3、L4、L5, first, second, third filter capacitor C1、C2、C3.The utility model input side is using the 12 pulsating wave rectification based on auto-transformer, relatively conventional three-phase bridge uncontrollable rectifier, control circuit Harmonics of Input can be effectively reduced, input power factor is improved, pollution of the harmonic wave produced when control circuit runs to power network is reduced.
Description
Technical field
The utility model belongs to oil exploration equipment field, and in particular to a kind of oil immersion line motor controls the main electricity of circuit
Road topology.
Background technology
Oil field generally uses beam pumping unit, and this oil production method is by mechanically operated mode by the rotation of belt pulley
Motion is converted to pumping for sucker rod, thus simple structure, and reliability is high, but there is also transmission link loss in efficiency
Greatly, side-abrasion of rod string and the deficiency such as noise is big.
Using the oil pumper of latent oil reciprocating linear electric motor, rotary motion to the conversion links of linear motion is eliminated, because
This reliability is improved with efficiency, but also still has several drawbacks：More than conventional switch board input side using three-phase bridge not
Control rectification, the Harmonics of Input produced using this rectifier system is big, and input power factor is low, pollutes whole power network.
And control circuit in the market cannot all solve the above problems, therefore, it is humorous that urgent need one kind can reduce electric current
Ripple, the control circuit that input power factor is provided.
Utility model content
Regarding to the issue above, the purpose of this utility model is to provide a kind of control for reducing switch board Harmonics of Input
Circuit.
The utility model use scheme be：For the big problem of Harmonics of Input, used in control circuit input side
12 pulsating wave rectification.
Specifically, the utility model provides a kind of control circuit for oil immersion line motor, it is characterised in that its
Including 12 pulsating wave auto-transformer, the first three-phase bridge uncontrollable rectifier module REC1, the second three-phase bridge uncontrollable rectifier module
REC2, the first paralleing reactor L1, the second paralleing reactor L2, first, second, third IGBT half-bridge modules, first, second He
3rd output inductor L3、L4、L5, first, second, third filter capacitor C1、C2、C3。
The 12 pulsating wave auto-transformer exports two groups of three-phase alternating voltage A1B1C1And A2B2C2, this two groups of three-phase voltages
The phase difference of correspondence phase is 30 degree, three-phase voltage A1B1C1It is input into the first three-phase bridge uncontrollable rectifier module REC1, three-phase voltage
A2B2C2It is input into the second three-phase bridge uncontrollable rectifier module REC2, the first three-phase bridge uncontrollable rectifier module REC1, the second three-phase bridge
Formula uncontrollable rectifier module REC2The positive pole of output is connected respectively to the first paralleing reactor L1Two-end-point, the first three-phase bridge is not controlled
Rectification module REC1, the second three-phase bridge uncontrollable rectifier module REC2The negative pole of output is connected respectively to the second paralleing reactor L2
Two-end-point, the first paralleing reactor L1Midpoint be connected to dc-link capacitance CdcPositive pole, the second paralleing reactor L2In
Point is connected to dc-link capacitance CdcNegative pole to dc-link capacitance CdcBoth positive and negative polarity connect 3 IGBT half-bridge modules respectively
Two ends, three midpoints of IGBT half-bridge modules pass through first, second, third output inductor L respectively3、L4、L5。
Further, the latent oil direct current generator has stator coil and mover coil, and the stator coil passes through latent oil
Armored cable is connected respectively to filter inductance L3, L4, L5Outlet side.
Further, the first, second, third filter capacitor C1、C2、C3It is connected across described first, second, and third defeated
Go out filter inductance L3、L4、L5Outlet side.
Three-phase alternating current input voltage is input into a 12 pulsating wave auto-transformer by control circuit of the present utility model first,
The auto-transformer two groups of phase differences of output are 30 degree of three-phase alternating voltage, and this two groups of three-phase alternating voltages are each connected to 1 again
Individual three-phase bridge uncontrollable rectifier circuit, two positive poles and negative pole of three-phase bridge uncontrollable rectifier circuit are each via 1 balance electricity
Anti- device connection, the output for connecting two paralleing reactors of cathode rectifier is connected to the positive pole of dc-link capacitance, correspondingly, even
The output for connecing two paralleing reactors of rectifier bridge negative pole is connected to the negative pole of dc-link capacitance, 3 IGBT half-bridge modules it is upper
Pipe collector and down tube emitter stage are connected with the positive pole and negative pole of dc-link capacitance respectively.3 bridge arm midpoints of IGBT module
Output inductor is each connected, 3 output filter capacitors are connected across 3 output ends of output inductor respectively, and inductance is defeated
Go out end and direct motor is connected by three-phase latent oil armored cable again.
Because conventional three-phase bridge uncontrollable rectifier is six pulse wave rectifiers, based on the 12 pulsating wave rectification of upper topology
Harmonics of Input can be significantly reduced, input power factor is improved, reduces the DC voltage ripple after rectification, mitigated to power network
Pollution.
The utility model has the advantages that：1 reliability is high；2nd, it is easily achieved；3rd, input power factor is improved, after reducing rectification
DC voltage ripple, mitigate pollution to power network.
Brief description of the drawings
Fig. 1 is the topological structure of the switch board circuit according to the utility model one embodiment；
Fig. 2 is using the input current simulation waveform of three-phase bridge uncontrollable rectifier；
Fig. 3 is using the input current simulation waveform of 12 pulsating wave rectification.
Specific embodiment
The utility model is described in detail below in conjunction with accompanying drawing and embodiment, but not therefore by the utility model
Protection domain be limited in embodiment description scope among.
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Fig. 1 is the latent oil reciprocating beam-pumping unit switch board main circuit structure schematic diagram implemented according to the utility model.
As shown in figure 1, three-phase alternating current input voltage is input into a 12 pulsating wave auto-transformer, the auto-transformer exports two groups of three-phases
Alternating voltage A1B1C1And A2B2C2, the phase difference of this two groups of three-phase voltage correspondence phases is 30 degree, i.e. A1、B1、C1Phase it is advanced or
Delayed A2、B2、C230 degree of phase.Three-phase voltage A1B1C1Input three-phase bridge uncontrollable rectifier module REC1, three-phase voltage A2B2C2
Input three-phase bridge uncontrollable rectifier module REC2, rectification module REC1And REC2The positive pole of output is connected respectively to paralleing reactor
L1Two-end-point, rectification module REC1And REC2The negative pole of output is connected respectively to paralleing reactor L2Two-end-point.Paralleing reactor L1
Midpoint be connected to dc-link capacitance CdcPositive pole, paralleing reactor L2Midpoint be connected to dc-link capacitance CdcIt is negative
Pole.Q1-Q2,Q3-Q4,Q5-Q6It is 3 IGBT half-bridge modules, Q1, Q3, Q5It is the upper pipe of this 3 half-bridge modules, their colelctor electrode
All it is connected to dc-link capacitance CdcPositive pole, Q2, Q4, Q6It is this 3 down tubes of half-bridge module, their emitter stage is all connected to directly
Stream bus capacitor CdcNegative pole.Q1, Q3, Q5Emitter stage be connected to output inductor L3, L4, L5Input side.3 filter capacitors
C1, C2, C3It is connected across filter inductance L3, L4, L5Outlet side.The stator coil of linear electric motors is connected respectively by latent oil armored cable
It is connected to filter inductance L3, L4, L5Outlet side.
Fig. 2 is that, using the input current simulation waveform of three-phase bridge uncontrollable rectifier, the sinusoidal waveform in outside is input in figure
Phase voltage waveform, the waveform of inner side is input phase current waveform.It can be seen that input current is discontinuously, comprising abundant
Harmonic components, thus input power factor is low.
Fig. 3 is that, using the input current simulation waveform of 12 pulsating wave rectification, the sinusoidal waveform in outside is input phase electricity in figure
Corrugating, the waveform of inner side is input phase current waveform.It can be seen that continuous input current, and near sinusoidal is presented,
Thus harmonic components are small, and input power factor is high.
Although being described in detail to principle of the present utility model above in conjunction with preferred embodiment of the present utility model,
It should be appreciated by those skilled in the art that above-described embodiment is only the explanation to exemplary implementation of the present utility model, and
The non-restriction that scope is included to the utility model.It is all it is of the present utility model spirit and principle within, according to of the present utility model
Technical spirit still falls within guarantor of the present utility model to any simple modification made for any of the above embodiments, equivalent variations and modification
Within the scope of shield.
Claims (3)
1. a kind of control circuit for oil immersion line motor, it is characterised in that it includes 12 pulsating wave auto-transformer, first
Three-phase bridge uncontrollable rectifier module REC1, the second three-phase bridge uncontrollable rectifier module REC2, the first paralleing reactor L1, it is second flat
Weighing apparatus reactor L2, first, second, third IGBT half-bridge modules, first, second, and third output inductor L3、L4、L5, the
First, second, third filter capacitor C1、C2、C3,
The 12 pulsating wave auto-transformer exports two groups of three-phase alternating voltage A1B1C1And A2B2C2, this two groups of three-phase voltage correspondences
The phase difference of phase is 30 degree, three-phase voltage A1B1C1It is input into the first three-phase bridge uncontrollable rectifier module REC1, three-phase voltage A2B2C2
It is input into the second three-phase bridge uncontrollable rectifier module REC2, the first three-phase bridge uncontrollable rectifier module REC1, the second three-phase bridge do not control
Rectification module REC2The positive pole of output is connected respectively to the first paralleing reactor L1Two-end-point, the first three-phase bridge uncontrollable rectifier mould
Block REC1, the second three-phase bridge uncontrollable rectifier module REC2The negative pole of output is connected respectively to the second paralleing reactor L2Two-end-point,
First paralleing reactor L1Midpoint be connected to dc-link capacitance CdcPositive pole, the second paralleing reactor L2Midpoint be connected to
Dc-link capacitance CdcNegative pole to dc-link capacitance CdcBoth positive and negative polarity connect 3 two ends of IGBT half-bridge modules, three respectively
The midpoint of individual IGBT half-bridge modules passes through first, second, third output inductor L respectively3、L4、L5。
2. the control circuit for oil immersion line motor according to claim 1, it is characterised in that the latent oil direct current
Machine has stator coil and mover coil, and the stator coil is connected respectively to filter inductance L by latent oil armored cable3, L4,
L5Outlet side.
3. the control circuit for oil immersion line motor according to claim 1, it is characterised in that
The first, second, third filter capacitor C1、C2、C3It is connected across the first, second, and third output inductor L3、
L4、L5Outlet side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621338787.3U CN206250961U (en) | 2016-12-08 | 2016-12-08 | A kind of control circuit for oil immersion line motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621338787.3U CN206250961U (en) | 2016-12-08 | 2016-12-08 | A kind of control circuit for oil immersion line motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206250961U true CN206250961U (en) | 2017-06-13 |
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ID=59004342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621338787.3U Active CN206250961U (en) | 2016-12-08 | 2016-12-08 | A kind of control circuit for oil immersion line motor |
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| Country | Link |
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| CN (1) | CN206250961U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113580950A (en) * | 2021-06-18 | 2021-11-02 | 东风汽车集团股份有限公司 | Motor control system and vehicle |
-
2016
- 2016-12-08 CN CN201621338787.3U patent/CN206250961U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113580950A (en) * | 2021-06-18 | 2021-11-02 | 东风汽车集团股份有限公司 | Motor control system and vehicle |
| CN113580950B (en) * | 2021-06-18 | 2023-12-19 | 东风汽车集团股份有限公司 | Motor control system and vehicle |
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