CN204118749U - The static chain type reactive generating device of mine flameproof and intrinsic safety type - Google Patents
The static chain type reactive generating device of mine flameproof and intrinsic safety type Download PDFInfo
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- CN204118749U CN204118749U CN201420494277.XU CN201420494277U CN204118749U CN 204118749 U CN204118749 U CN 204118749U CN 201420494277 U CN201420494277 U CN 201420494277U CN 204118749 U CN204118749 U CN 204118749U
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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
- Y02E40/30—Reactive power compensation
Abstract
The utility model discloses the static chain type reactive generating device of a kind of mine flameproof and intrinsic safety type, this device comprises flame proof filter cavity, main flame proof cavity, major loop and control loop.Major loop comprises: input reactance device one, ac capacitor, input reactance device two, precharge unit and inversion unit.Control loop comprises: drive circuit, fibre optic plate, interface circuit, control circuit and display screen.Input reactance device one, ac capacitor and input reactance device two form sinusoidal filter and carry out filtering, and inversion unit adopts chain H bridge circuit structure, adopts star connection between three-phase H-bridge circuit.The utility model take voltage source inverter as core, by changing amplitude and the phase place of inversion unit output voltage, reaching and sending or absorb idle object.Have start that Continuous Compensation scope, rapid dynamic response speed, excellent harmonic wave characteristic, the floor space of impacting little, combination in any are little, advantage and the flame proof function such as high efficiency and superpower compensation ability.
Description
Technical field
The utility model relates to a kind of reactive generating device, specifically the static chain type reactive generating device of a kind of mine flameproof and intrinsic safety type.
Background technology
At present, the factor affecting colliery electric energy loss is a lot, and wherein reactive loss accounts for larger specific gravity.Along with the significantly raising of raw coal output, the installed power of plant equipment also increases thereupon, and supply line is also more and more longer, thus makes voltage ripple of power network very large.Along with the development of electronic technology, colliery also adopts the nonlinear loads such as similar thyristor soft start, silicon rectifying equipment in a large number, produces a large amount of harmonic waves when it runs.Current, the reactive power compensator that colliery uses has mechanical switching capacitance inductance device and thyristor series capacitor inductance device, there is the shortcomings such as compensation speed is slow, the life-span is short, floor space is large, generation harmonic wave is large.
Summary of the invention
For solving the problems of the technologies described above, improving the power factor of electrical network, the utility model discloses the static chain type reactive generating device of a kind of mine flameproof and intrinsic safety type.
The utility model comprises flame proof filter cavity, main flame proof cavity, major loop and control loop.Major loop comprises: input reactance device 1, ac capacitor 2, input reactance device 23, precharge unit 4 and inversion unit 5.Control loop comprises: drive circuit 6, fibre optic plate 7, interface circuit 8, control circuit 9 and display screen 10.
Power supply L1, L2 are connected with input reactance device 1 input with L3, input reactance device 1 output is connected with input reactance device 23 input, ac capacitor 2 is connected in parallel on input reactance device 1 output and input reactance device 23 input, input reactance device 23 output connects precharge unit 4, and precharge unit 4 connects the input of inversion unit 5.Wherein input reactance device 1, ac capacitor 2 and input reactance device 23 formation sinusoidal filter carries out filtering.
Input reactance device 1, ac capacitor 2 and input reactance device 23 are arranged in flame proof filter cavity, and precharge unit 4 and inversion unit 5 are arranged in main flame proof cavity, adopt high-tension shielding cable to connect between two cavitys.
Inversion unit 5 adopts chain H bridge circuit structure, U phase H-bridge circuit, adopts star connection between V phase H-bridge circuit and W phase H-bridge circuit.The H-bridge circuit composition of every phase comprises: electric capacity C, module T1, T2, T3 and T4, diode D1, D2, D3 and D4.
The beneficial effects of the utility model are: based on power current inverter, take voltage source inverter as core, have start that Continuous Compensation scope, rapid dynamic response speed, excellent harmonic wave characteristic, the floor space of impacting little, combination in any are little, the advantage such as high efficiency and superpower compensation ability, there is flame proof function simultaneously.
Accompanying drawing explanation
Fig. 1 is mine flameproof and intrinsic safety type static chain type reactive generating device schematic diagram.
Fig. 2 is U phase H-bridge circuit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
The utility model comprises flame proof filter cavity, main flame proof cavity, major loop and control loop.Major loop comprises: input reactance device 1, ac capacitor 2, input reactance device 23, precharge unit 4 and inversion unit 5.Control loop comprises: drive circuit 6, fibre optic plate 7, interface circuit 8, control circuit 9 and display screen 10.
Power supply L1, L2 are connected with input reactance device 1 input with L3, input reactance device 1 output is connected with input reactance device 23 input, ac capacitor 2 is connected in parallel on input reactance device 1 output and input reactance device 23 input, input reactance device 23 output connects precharge unit 4, and precharge unit 4 connects the input of inversion unit 5.Wherein input reactance device 1, ac capacitor 2 and input reactance device 23 formation sinusoidal filter carries out filtering.
Input reactance device 1, ac capacitor 2 and input reactance device 23 are arranged in flame proof filter cavity, and precharge unit 4 and inversion unit 5 are arranged in main flame proof cavity, adopt high-tension shielding cable to connect between two cavitys.
Inversion unit 5 adopts chain H bridge circuit structure, U phase H-bridge circuit, adopts star connection between V phase H-bridge circuit and W phase H-bridge circuit.For U phase H-bridge circuit, its composition comprises: electric capacity C, module T1, T2, T3 and T4, diode D1, D2, D3 and D4.The anode of diode D1 is connected with the emitter of module T1, and negative electrode is connected with the collector electrode of module T1; The anode of diode D2 is connected with the emitter of module T2, and negative electrode is connected with the collector electrode of module T2; The anode of diode D3 is connected with the emitter of module T3, and negative electrode is connected with the collector electrode of module T3; The anode of diode D4 is connected with the emitter of module T4, and negative electrode is connected with the collector electrode of module T4; Module T1 emitter and module T2 collector electrode are connected to the L1 phase of precharge unit 4, module T3 emitter and module T4 collector electrode are connected to output AC U phase, module T1 collector electrode is connected with the malleation of DC bus with module T3 collector electrode, module T2 emitter is connected with the negative pressure of DC bus with module T4 emitter, and electric capacity C is connected in parallel on DC bus two ends.
Control circuit 9 is the control core of native system, adopts the Digital Control System of two CSTR and FPGA, has remote monitoring function.Control circuit 9 is connected with interface circuit 8 by fast mode of inserting, interface circuit 8 provides collection and the conversion of input current signal, voltage signal and temperature signal for control circuit 9, and be connected with fibre optic plate 7 by the mode of winding displacement, fibre optic plate 7 converts electrical signals to light signal and sends to drive circuit 6, drive circuit 6 is for performing the switch of command control module in control circuit 9, and drive circuit 6 exports and is connected with inversion unit 5.Control circuit 9 is connected with display screen 10 simultaneously, and display screen 10 is capable of displaying status, parameters, check fault and record.
The utility model, based on power current inverter, take voltage source inverter as core, and DC side adopts DC capacitor for energy-storage travelling wave tube is to provide voltage support.Operationally be equivalent to a voltage-phase and all adjustable three-phase alternating-current supply of amplitude.Inverter normally runs the voltage support depending on DC side, when inverter incoming transport power supply, forms rectifier, charge to direct current capacitor by the reverse fly-wheel diode of each module; After normal operation, the energy storage of direct current capacitor will be used for the internal loss of supplementary inverter, and capacitance voltage is declined.Therefore, must constantly voltage be made to remain on working range to capacitor charging complementary energy.This device realizes phase change by making the very little angle of inverter output voltage delay system voltage one, and inverter is used for meeting its internal loss from Systemic absorption is meritorious on a small quantity, keeps voltage levvl.This device is by regulating the switch of module in inverter, DC inversion can be controlled to the amplitude of voltage exchanged and phase place, by required idle in detection system, contrary idle of equal and opposite in direction, phase place can be sent fast, realize idle in-situ balancing, the real-time High Power Factor of keeping system runs.When the delayed line voltage of output reactive current that device detects, regulation output voltage magnitude is greater than supply voltage, sends perception idle; Export the advanced line voltage of reactive current, regulation output voltage magnitude is less than supply voltage, sends capacitive reactive power.
Claims (3)
1. the static chain type reactive generating device of mine flameproof and intrinsic safety type, it is characterized in that: this device comprises flame proof filter cavity, main flame proof cavity, major loop and control loop, and major loop comprises: input reactance device one (1), ac capacitor (2), input reactance device two (3), precharge unit (4) and inversion unit (5); Control loop comprises: drive circuit (6), fibre optic plate (7), interface circuit (8), control circuit (9) and display screen (10); Power supply L1, L2 are connected with input reactance device one (1) input with L3, input reactance device one (1) output is connected with input reactance device two (3) input, ac capacitor (2) is connected in parallel on input reactance device one (1) output and input reactance device two (3) input, input reactance device two (3) output connects precharge unit (4), and precharge unit (4) connects the input of inversion unit (5).
2. the static chain type reactive generating device of mine flameproof and intrinsic safety type according to claim 1, it is characterized in that: input reactance device one (1), ac capacitor (2) and input reactance device two (3) are arranged in flame proof filter cavity, precharge unit (4) and inversion unit (5) are arranged in main flame proof cavity, adopt high-tension shielding cable to connect between two cavitys.
3. the static chain type reactive generating device of mine flameproof and intrinsic safety type according to claim 1, is characterized in that: inversion unit (5) adopts chain H bridge circuit structure, adopts star connection between the H-bridge circuit of U phase, V phase H, W phase three-phase; Every phase H-bridge circuit composition comprises: electric capacity C, module T1, T2, T3 and T4, diode D1, D2, D3 and D4; The anode of diode D1 is connected with the emitter of module T1, and negative electrode is connected with the collector electrode of module T1; The anode of diode D2 is connected with the emitter of module T2, and negative electrode is connected with the collector electrode of module T2; The anode of diode D3 is connected with the emitter of module T3, and negative electrode is connected with the collector electrode of module T3; The anode of diode D4 is connected with the emitter of module T4, and negative electrode is connected with the collector electrode of module T4; Module T1 emitter and module T2 collector electrode are connected to the L1 phase of precharge unit 4, module T3 emitter and module T4 collector electrode are connected to output AC U phase, module T1 collector electrode is connected with the malleation of DC bus with module T3 collector electrode, module T2 emitter is connected with the negative pressure of DC bus with module T4 emitter, and electric capacity C is connected in parallel on DC bus two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420494277.XU CN204118749U (en) | 2014-08-30 | 2014-08-30 | The static chain type reactive generating device of mine flameproof and intrinsic safety type |
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| CN201420494277.XU CN204118749U (en) | 2014-08-30 | 2014-08-30 | The static chain type reactive generating device of mine flameproof and intrinsic safety type |
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| CN204118749U true CN204118749U (en) | 2015-01-21 |
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| CN201420494277.XU Active CN204118749U (en) | 2014-08-30 | 2014-08-30 | The static chain type reactive generating device of mine flameproof and intrinsic safety type |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490272A (en) * | 2015-05-25 | 2016-04-13 | 廊坊英博电气有限公司 | H-bridge cascaded multi-level active power filter device |
-
2014
- 2014-08-30 CN CN201420494277.XU patent/CN204118749U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490272A (en) * | 2015-05-25 | 2016-04-13 | 廊坊英博电气有限公司 | H-bridge cascaded multi-level active power filter device |
| CN105490272B (en) * | 2015-05-25 | 2018-11-23 | 廊坊英博电气有限公司 | A kind of H bridge cascade multi-level active power filter device |
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Address after: 063020 Torch Road, Tangshan City high tech Zone, Hebei, No. 183 Patentee after: CITIC HIC KAICHENG INTELLIGENCE EQUIPMENT CO., LTD. Address before: 063020 Torch Road, Tangshan City high tech Zone, Hebei, No. 183 Patentee before: Tangshan Kaicheng Electronic Control Equipment Group Co., Ltd. |