CN204539041U - The special middle voltage frequency conversion speed-adjustable device of Novel submersible electric pump - Google Patents
The special middle voltage frequency conversion speed-adjustable device of Novel submersible electric pump Download PDFInfo
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- CN204539041U CN204539041U CN201520191999.2U CN201520191999U CN204539041U CN 204539041 U CN204539041 U CN 204539041U CN 201520191999 U CN201520191999 U CN 201520191999U CN 204539041 U CN204539041 U CN 204539041U
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/487—Neutral point clamped inverters
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Abstract
The utility model relates to the special middle voltage frequency conversion speed-adjustable device of a kind of Novel submersible electric pump, three-phase 700V ~ 3300V alternating current inputs via rectification module, first convert direct current to, rectification module exports and DC filtering wired in parallel, filtering is carried out to direct current, DC filtering module just, zero, negative three road voltages export and are connected to inversion module relevant position, inversion module exports three-phase alternating voltage and is connected to sine wave filter, and the three-phase alternating voltage is after filtering exported by sine wave filter and connects Electric Submersible Pump Unit.The three-level topology structure that inversion module of the present utility model is made up of rated voltage 6500V IGBT module, can realize the speed governing of 3300V alternating voltage Direct Conversion, without the need to step-up transformer, reduce occupation area of equipment and cost.Simultaneously the utility model inside is integrated with sine wave filter, can meet the needs of the long cable power supply of oil-immersed pump, reduces the insulation damages of harmonic wave to service cable and Electric Submersible Pump Unit, extends its useful life and maintenance cost.
Description
Technical field
The utility model belongs to electric electronic current change technology field, relates to the special middle voltage frequency conversion speed-adjustable device of a kind of Novel submersible electric pump, is applicable to the Special conversion speed governer of petroleum industry Electric Submersible Pump Unit.
Background technology
Submersible electric pump has been widely used in each elephant as the visual plant of oil recovery business.Electric Submersible Pump Unit is made up of oil-submersible centrifugal pump, separator, protector, submersible electric machine with oil, oil-submersible cable.Submersible electric machine with oil and the difference of common asynchronous moter are that rotor saves alignment bearing and rotating shaft etc. by the rotor that more piece is identical and forms, and therefore its rated voltage is within the scope of 1000V ~ 2500V.Generally for and adapt to this voltage range of submersible electric machine with oil, need to use general low voltage frequency converter to coordinate suitable step-up transformer, application needs could be met.In addition, because Electric Submersible Pump Unit works in the down-hole of more than 1000 meters usually, therefore service cable length is also more than more than 1000 meters, if adopt the scheme of variable frequency drive motors, require that inverter output harmonic content is lower than 5%, otherwise cable and electrical machine insulation will be affected, reduction of service life.
Summary of the invention
Problem to be solved in the utility model is, overcome the deficiencies in the prior art, there is provided a kind of Novel submersible electric pump special middle voltage frequency conversion speed-adjustable device, inversion part adopts three-level topology structure, export the adjustable alternating voltage of 700 ~ 3300V, Direct driver submersible electric machine with oil, without the need to step-up transformer, and the inner integrated sine wave filter of RHVC, meet the requirement of long cable power supply to harmonic wave.
The utility model solves its technical problem and takes following technical scheme to realize:
According to the special middle voltage frequency conversion speed-adjustable device of a kind of Novel submersible electric pump that the utility model provides, comprise rectification module, DC filtering module, inversion module, sine wave filter, three-phase 700V ~ 3300V alternating current inputs via rectification module, first convert direct current to, rectification module exports and DC filtering wired in parallel, filtering is carried out to direct current, DC filtering module just, zero, negative three road voltages export and are connected to inversion module relevant position, inversion module exports three-phase alternating voltage and is connected to sine wave filter, three-phase alternating voltage is after filtering exported by sine wave filter and connects Electric Submersible Pump Unit.
It is take following technical scheme to realize further that the utility model solves its technical problem:
Aforesaid inversion module is made up of three groups of inverter bridge, often organizes inverter bridge and is made up of power model IGBT1, power model IGBT2 and clamping diode module SD1; Power model IGBT1 connects with power model IGBT2, and namely the emitter of power model IGBT1 is connected with the collector electrode of power model IGBT2, connects common point and leads to terminal A, and terminal A is the phase during inversion module three-phase exports; The collector electrode of power model IGBT1 is connected with positive direct-current bus, and the emitter of power model IGBT2 is connected with negative DC bus; The mid point of power model IGBT1 is connected with the anode of clamping diode module SD1, and the mid point of power model IGBT2 is connected with the negative electrode of clamping diode module SD1, and the mid point of clamping diode module SD1 is connected to zero DC bus.
Aforesaid sine wave filter is made up of three-phase reactor L and membrane capacitance C1 ~ C9, and the three-phase that wherein input terminal R, the input terminal S of reactor L, input terminal T connect above-mentioned inversion module respectively exports; Electric capacity C1, electric capacity C2, electric capacity C3 are connected in series, electric capacity C4, electric capacity C5, electric capacity C6 are connected in series, electric capacity C7, electric capacity C8, electric capacity C9 are connected in series, and meanwhile, a pole of electric capacity C3, electric capacity C6, electric capacity C9 is connected in parallel.One pole of electric capacity C1, electric capacity C4, electric capacity C7 is connected to lead-out terminal U, lead-out terminal V, the lead-out terminal W of reactor L respectively, is integrated with cigarette temperature detector YW in sinusoidal filter.
The utility model compared with prior art has significant advantage and beneficial effect:
Due to the three-level topology structure that the inversion module of the utility model employing is made up of rated voltage 6500V IGBT module, therefore the rated output voltage of equipment can reach 3300V, the speed governing of 3300V alternating voltage Direct Conversion can be realized, without the need to step-up transformer, reduce occupation area of equipment and cost.Simultaneously RHVC inside is integrated with sine wave filter, can meet the needs of the long cable power supply of oil-immersed pump, reduces the insulation damages of harmonic wave to service cable and Electric Submersible Pump Unit, extends its useful life and maintenance cost.
Embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to embodiment, structure, feature and effect thereof of providing according to the utility model, be described in detail as follows.
The special middle voltage frequency conversion speed-adjustable device of a kind of Novel submersible electric pump as shown in Figure 1, comprise rectification module, DC filtering module, inversion module, sine wave filter, three-phase 700V ~ 3300V alternating current inputs via rectification module 1, first convert direct current to, rectification module 1 exports in parallel with DC filtering module 2, filtering is carried out to direct current, DC filtering module 2 just, zero, negative three road voltages export and are connected to inversion module 3 relevant position, inversion module 3 exports three-phase alternating voltage and is connected to sine wave filter 4, three-phase alternating voltage is after filtering exported by sine wave filter and connects Electric Submersible Pump Unit 5.
As shown in Figure 2, described inversion module 3 is made up of three groups of inverter bridge, often organizes inverter bridge and is made up of power model IGBT1, power model IGBT2 and clamping diode module SD1; Power model IGBT1 connects with power model IGBT2, and namely the emitter of power model IGBT1 is connected with the collector electrode of power model IGBT2, connects common point and leads to terminal A, and terminal A is the phase during inversion module three-phase exports; The collector electrode of power model IGBT1 is connected with positive direct-current bus, and the emitter of power model IGBT2 is connected with negative DC bus; The mid point of power model IGBT1 is connected with the anode of clamping diode module SD1, and the mid point of power model IGBT2 is connected with the negative electrode of clamping diode module SD1, and the mid point of clamping diode module SD1 is connected to zero DC bus.
As shown in Figure 3, described sine wave filter 4 is made up of three-phase reactor L and membrane capacitance C1 ~ C9, and the three-phase that wherein input terminal R, the input terminal S of reactor L, input terminal T connect above-mentioned inversion module respectively exports; Electric capacity C1, electric capacity C2, electric capacity C3 are connected in series, electric capacity C4, electric capacity C5, electric capacity C6 are connected in series, electric capacity C7, electric capacity C8, electric capacity C9 are connected in series, and meanwhile, a pole of electric capacity C3, electric capacity C6, electric capacity C9 is connected in parallel.One pole of electric capacity C1, electric capacity C4, electric capacity C7 is connected to lead-out terminal U, lead-out terminal V, the lead-out terminal W of reactor L respectively, forms filter circuit inversion module being exported to high order harmonic component.In addition, in sinusoidal filter, be also integrated with cigarette temperature detector YW, when filter temperature is too high or occur dense smoke, the output of RHVC can be stopped by chain control point, avoid fault spread.
Operation principle: the utility model input voltage is 700V ~ 3300V alternating voltage, through the DC power supply that rectification module 1 rectification is pulsation, again through DC filtering module 2, obtain galvanic current source, output to inversion module 3, by the PWM pulse-width modulation of inversion module 3 inside, the AC power that forming frequency, amplitude are adjustable, outputs to sine wave filter 4; Owing to having carried out appropriate design to reactor, capacitor parameters in filter, inversion module 3 output voltage waveforms medium frequency is not more than to the component sine waves of 50Hz, filter has been low resistive state, can pass through; And for the non-key player on a team's wave component of high frequency, filter is high-impedance state, not by.Therefore through sine wave filter 4 filter action, guarantee to output to voltage harmonic content in submersible electric pump load lower than 5%, for the insulation of long distance service cable and the line bag insulation not impact of electric pump unit, thus improve the useful life of service cable and electric pump unit.
Accompanying drawing explanation
Fig. 1 schematic block circuit diagram of the present utility model;
Fig. 2 inversion module circuit theory diagrams of the present utility model;
Fig. 3 sine wave filter circuit theory diagrams of the present utility model.
Wherein: 1, rectification module, 2, DC filtering module, 3, inversion module, 4, sine wave filter, 5, Electric Submersible Pump Unit.
Claims (3)
1. the special middle voltage frequency conversion speed-adjustable device of Novel submersible electric pump, comprise rectification module, DC filtering module, inversion module, sine wave filter, it is characterized in that: three-phase 700V ~ 3300V alternating current inputs via rectification module, first convert direct current to, rectification module exports and DC filtering wired in parallel, filtering is carried out to direct current, DC filtering module just, zero, negative three road voltages export and are connected to inversion module relevant position, inversion module exports three-phase alternating voltage and is connected to sine wave filter, three-phase alternating voltage is after filtering exported by sine wave filter and connects Electric Submersible Pump Unit.
2. the special middle voltage frequency conversion speed-adjustable device of submersible electric pump according to claim 1, is characterized in that: described inversion module is made up of three groups of inverter bridge, often organizes inverter bridge and is made up of power model IGBT1, power model IGBT2 and clamping diode module SD1; Power model IGBT1 connects with power model IGBT2, and namely the emitter of power model IGBT1 is connected with the collector electrode of power model IGBT2, connects common point and leads to terminal A, and terminal A is the phase during inversion module three-phase exports; The collector electrode of power model IGBT1 is connected with positive direct-current bus, and the emitter of power model IGBT2 is connected with negative DC bus; The mid point of power model IGBT1 is connected with the anode of clamping diode module SD1, and the mid point of power model IGBT2 is connected with the negative electrode of clamping diode module SD1, and the mid point of clamping diode module SD1 is connected to zero DC bus.
3. the special middle voltage frequency conversion speed-adjustable device of submersible electric pump according to claim 1, it is characterized in that: described sine wave filter is made up of three-phase reactor L and membrane capacitance C1 ~ C9, the three-phase that wherein input terminal R, the input terminal S of reactor L, input terminal T connect above-mentioned inversion module respectively exports; Electric capacity C1, electric capacity C2, electric capacity C3 are connected in series, electric capacity C4, electric capacity C5, electric capacity C6 are connected in series, electric capacity C7, electric capacity C8, electric capacity C9 are connected in series, and meanwhile, a pole of electric capacity C3, electric capacity C6, electric capacity C9 is connected in parallel.One pole of electric capacity C1, electric capacity C4, electric capacity C7 is connected to lead-out terminal U, lead-out terminal V, the lead-out terminal W of reactor L respectively, is integrated with cigarette temperature detector YW in sinusoidal filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191999.2U CN204539041U (en) | 2015-04-01 | 2015-04-01 | The special middle voltage frequency conversion speed-adjustable device of Novel submersible electric pump |
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| CN201520191999.2U CN204539041U (en) | 2015-04-01 | 2015-04-01 | The special middle voltage frequency conversion speed-adjustable device of Novel submersible electric pump |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734602A (en) * | 2015-04-01 | 2015-06-24 | 天津华云自控股份有限公司 | Medium-voltage frequency conversion speed regulation device special for electric submersible pump |
| CN105577059A (en) * | 2016-01-19 | 2016-05-11 | 南京航空航天大学 | Noise suppression method for marine asynchronous motor system |
| CN105610290A (en) * | 2016-01-19 | 2016-05-25 | 南京航空航天大学 | Marine low-noise asynchronous motor system, control system and control method |
| CN110971173A (en) * | 2018-12-21 | 2020-04-07 | 比亚迪股份有限公司 | Charging method of power battery, motor control circuit and vehicle |
| CN114400952A (en) * | 2021-12-31 | 2022-04-26 | 青岛海尔空调电子有限公司 | Drive circuit and drive equipment for direct-current variable-frequency motor |
| CN114593072A (en) * | 2020-12-04 | 2022-06-07 | 中国石油化工股份有限公司 | Electric submersible pump driving system |
-
2015
- 2015-04-01 CN CN201520191999.2U patent/CN204539041U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104734602A (en) * | 2015-04-01 | 2015-06-24 | 天津华云自控股份有限公司 | Medium-voltage frequency conversion speed regulation device special for electric submersible pump |
| CN105577059A (en) * | 2016-01-19 | 2016-05-11 | 南京航空航天大学 | Noise suppression method for marine asynchronous motor system |
| CN105610290A (en) * | 2016-01-19 | 2016-05-25 | 南京航空航天大学 | Marine low-noise asynchronous motor system, control system and control method |
| CN105610290B (en) * | 2016-01-19 | 2018-01-12 | 南京航空航天大学 | A kind of low noise Induction Motor System, control system and control method peculiar to vessel |
| CN105577059B (en) * | 2016-01-19 | 2018-05-25 | 南京航空航天大学 | A kind of noise suppressing method of Induction Motor System peculiar to vessel |
| CN110971173A (en) * | 2018-12-21 | 2020-04-07 | 比亚迪股份有限公司 | Charging method of power battery, motor control circuit and vehicle |
| CN110971173B (en) * | 2018-12-21 | 2021-01-19 | 比亚迪股份有限公司 | Charging method of power battery, motor control circuit and vehicle |
| US11876396B2 (en) | 2018-12-21 | 2024-01-16 | Byd Company Limited | Power battery charging method, motor control circuit, and vehicle |
| CN114593072A (en) * | 2020-12-04 | 2022-06-07 | 中国石油化工股份有限公司 | Electric submersible pump driving system |
| CN114400952A (en) * | 2021-12-31 | 2022-04-26 | 青岛海尔空调电子有限公司 | Drive circuit and drive equipment for direct-current variable-frequency motor |
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