CN203645550U - Harmonic voltage stabilization control system - Google Patents
Harmonic voltage stabilization control system Download PDFInfo
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- CN203645550U CN203645550U CN201320782883.7U CN201320782883U CN203645550U CN 203645550 U CN203645550 U CN 203645550U CN 201320782883 U CN201320782883 U CN 201320782883U CN 203645550 U CN203645550 U CN 203645550U
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- power switch
- switch pipe
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- inverter
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- 230000006641 stabilisation Effects 0.000 title abstract description 7
- 238000011105 stabilization Methods 0.000 title abstract description 7
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 13
- 239000006096 absorbing agent Substances 0.000 claims abstract description 8
- 239000003381 stabilizer Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 7
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
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Abstract
The utility model relates to a harmonic voltage stabilization control system, which solves the technical problems that voltage stabilizers in the prior art are narrow in voltage stabilizing range, long in response time and unable to filter high-order or multiple harmonics. The system comprises a surge absorber, a filter, a rectifier and an inverter which are successively connected. The system also comprises a controller connected to the rectifier and the inverter. The system is widely used in railway systems.
Description
Technical field
The utility model relates to a kind of voltage-stabilizing system, particularly relates to a kind of harmonic wave voltage stabilizing governing system.
Background technology
At present, along with the high speed development of electric railway, the security reliability of power supply has been proposed to more and more higher requirement.Because power supply scope range of the fluctuation of voltage is large, harmonic components is many, disturbs the reasons such as strong, so adopt pressurizer to carry out voltage stabilizing processing to secondary device.
But existing pressurizer adopts electromagnetism exchange, in the time that a sinusoidal voltage is added in primary coil two ends, just has alternating current and produce alternating flux in wire, it forms closed magnetic circuit along iron core through primary coil and secondary coil.Existing pressurizer voltage stabilization scope generally between 10%-20%, and does not have the filtering function of high order or multiple harmonic.Due to the particularity of electric railway system, 308V/220V voltage input end there will be greater than or less than 50% terminal voltage of input terminal voltage and 3 times, 5 times, 7 times ... etc. high order harmonic component, existing pressurizer voltage stabilized range is narrow, the reaction time is long, can not filtering high order/multiple harmonic, so just cause linear quadratic control chamber AC system element to burn and affect the normal operation of the whole railway system, bringing great potential safety hazard.
Summary of the invention
The technical problem that the utility model is exactly that existing pressurizer voltage stabilized range is narrow in order to solve, the reaction time is long, can not filtering high order/multiple harmonic, provides that a kind of voltage stabilized range is wide, the voltage stabilizing time long, harmonic wave voltage stabilizing governing system that can filtering high order/multiple harmonic.
The harmonic wave voltage stabilizing governing system that the utility model provides, comprises the surge absorber, filter, rectifier and the inverter that are linked in sequence successively, also comprises the controller being connected with rectifier, inverter, and controller is provided with dsp chip.
Inverter comprises the bridge inverter main circuit that four power switch pipes form, and four power switch pipes are respectively the first power switch pipe, the second power switch pipe, the 3rd power switch pipe, the 4th power switch pipe;
The collector electrode of the first power switch pipe is connected with the collector electrode of the second power switch pipe, and the emitting stage of the 3rd power switch pipe is connected with the emitting stage of the 4th power switch pipe; The grid of the first power switch pipe is connected with the first resistance, and the grid of the second power switch pipe is connected with the second resistance, and the grid of the 3rd power switch pipe is connected with the 3rd resistance, and the grid of the 4th power switch pipe is connected with the 4th resistance; The two ends of the first resistance are parallel with the first diode, and the second resistance two ends are parallel with the second diode, and the 3rd resistance two ends are parallel with the 3rd diode, and the 4th resistance two ends are parallel with the 4th diode; Between the emitter of one end of the first resistance and the first power switch pipe, be connected with the 5th resistance, between the emitter of one end of the second resistance and the second power switch pipe, be connected with the 7th resistance, between the emitter of one end of the 3rd resistance and the 3rd power switch pipe, be connected with the 6th resistance, between one end of the 4th resistance and the emitter of the 4th power switch pipe, be connected with the 8th resistance; One end of the 6th resistance is connected with the 9th resistance;
Tie point between the first power switch pipe and the 3rd power switch pipe has formed and has exchanged output AC end with the tie point between the second power switch pipe and the 4th power switch pipe; Tie point between the first power switch pipe and the 3rd power switch pipe is connected to the tie point between the second power switch pipe and the 4th power switch pipe by the first inductance and the second electric capacity, two ends second inductance in parallel of the second electric capacity, the second inductance two ends the 3rd electric capacity in parallel, after the 4th electric capacity and the 5th capacitances in series and at the 3rd electric capacity two ends.
The beneficial effects of the utility model are, use native system, make load end and mains electricity input end in good " electricity is isolated " state, and good output waveform, output voltage quality are high, even if load changing also can keep excellent band to carry characteristic; Can realize frequency stabilization, voltage stabilizing power supply to load, really provide the voltage stabilizing of high-quality, the pure sine-wave power supply of frequency stabilization to user, thereby the power supply that meets railway system's needs is provided; Protection has solved the spread of voltage such as overvoltage, under voltage problem, and voltage stabilized range is wide, the voltage stabilizing time is long, can filtering high order/multiple harmonic.
The further feature of the utility model, by the description of following embodiment, is clearly recorded.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the circuit theory diagrams of inverter of the present utility model.
Reference numeral explanation:
1. civil power, 2. surge absorber 3. filters, 4. rectifier, 5. inverter, 6. load, 7. controller.VD is rectifier bridge, DC(+/-) be direct current input, AC. exchange output, VT1. the first power switch pipe, VT2. the second power switch pipe, VT3. the 3rd power switch pipe, VT4. the 4th power switch pipe, C1, C2, C3, C4, C5 is respectively the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, D1, D2, D3, D4 is respectively the first diode, the second diode, the 3rd diode, the 4th diode, L1, L2 is respectively the first inductance, the second inductance, R1, R2, R3, R4, R5, R6, R7, R8, R9 is respectively the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, DRV1, DRV2, DRV3, DRV4 is for driving signal.
Embodiment
As shown in Figure 2, the utility model comprises surge absorber 2, filter 3, rectifier 4, inverter 5 and controller 7, and absorber 2, filter 3, rectifier 4 and inverter 5 are linked in sequence successively, and controller 7 is connected with rectifier 4, inverter 5.
Controller 7 for controlling rectifier 4, inverter 5 is worked, it adopts TI company high performance DSP as main control chip, completes the function such as output of current/voltage A/D sampling, SPWM impulse wave.Between control system and power device, adopt optical-fibre communications, there is good anti-interference.Common pressurizer cannot be realized the functions such as the output of current/voltage AD sampling, SPWM impulse wave, just realizes simple electromagnetism function of exchange.
The utility model make load 6 with civil power 1 input end in good " electricity isolation " state, good output waveform, output voltage quality are high, also can keep excellent band to carry characteristic even if load 6 suddenlys change.It can realize frequency stabilization, voltage stabilizing power supply to load, really provides the voltage stabilizing of high-quality, the pure sine-wave power supply of frequency stabilization to user, thereby the power protection that meets network system needs is provided.
Rectifier 4 adopt diode and IGBT combined, the operating frequency of rectifier 4 is high, has power factor emendation function, filter volume is little, throat sound is low, reliability high.
The direct current energy that inverter 5 use rectifiers 4 are exported is converted to all more stable AC energy of voltage and frequency, and the quality of its performance directly affects the output performance index of package unit.The IGBT inverter operating frequency high (20kHz) that we adopt, filter volume is little, and noise is low, and reliability is high.Common pressurizer cannot be realized direct current energy and be converted to AC energy function.
The circuit theory diagrams of inverter 5 as shown in Figure 2, this inverter 5 is the bridge inverter main circuits that are made up of four IGBT power switch pipes, the direct voltage that rectifier 4 is exported, through the first capacitor C 1 from DC(+/-) input, after treatment, convert alternating current AC output to.Rectifier 4 comprises rectifier bridge VD, and civil power 1 after filtering passes through inverter 5 inversions after by rectifier 4 rectifications again, final output AC electricity AC.
Four power switchs are respectively the first power switch pipe VT1, the second power switch pipe VT2, the 3rd power switch pipe VT3, the 4th power switch pipe VT4.DC+ end is connected with the collector electrode of the first power switch pipe VT1 and the collector electrode of the second power switch pipe VT2, and DC-end is connected with emitting stage and the 4th power switch pipe VT4 emitting stage of the 3rd power switch pipe VT3.The grid of the first power switch pipe VT1 is connected and is driven signal DRV1 by the first resistance R 1, the grid of the second power switch pipe VT2 is connected and is driven signal DRV2 by the second resistance R 2, the grid of the 3rd power switch pipe VT3 is connected and is driven signal DRV3 by the 3rd resistance R 3, and the grid of the 4th power switch pipe VT4 is connected and driven signal DRV4 by the 4th resistance R 4.The first resistance R 1 two ends are parallel with the first diode D1, and the second resistance R 2 two ends are parallel with the second diode D2, and the 3rd resistance R 3 two ends are parallel with the 3rd diode D3, and the 4th resistance R 4 two ends are parallel with the 4th diode D4.Between the emitter of one end of the first resistance R 1 and the first power switch pipe VT1, be connected with the 5th resistance R 5, between the emitter of one end of the second resistance R 2 and the second power switch pipe VT2, be connected with the 7th resistance R 7, between the emitter of one end of the 3rd resistance R 3 and the 3rd power switch pipe VT3, be connected with between the 6th one end of resistance R 6, the four resistance R 4 and the emitter of the 4th power switch pipe VT4 and be connected with the 8th resistance R 8.One end of the 6th resistance R 6 is connected to DC-end by the 9th resistance R 9.
Tie point between the first power switch pipe VT1 and the 3rd power switch pipe VT3 has formed and has exchanged output AC with the tie point between the second power switch pipe VT2 and the 4th power switch pipe VT4.Tie point between the first power switch pipe VT1 and the 3rd power switch pipe VT3 is connected to the tie point between the second power switch pipe VT2 and the 4th power switch pipe VT4 by the first inductance L 1 and the second capacitor C 2, second capacitor C 2 two ends the second inductance L 2 in parallel, after the second inductance L 2 two ends the 3rd capacitor C 3, the four capacitor C 4 in parallel and the 5th capacitor C 5 series connection and at the 3rd capacitor C 3 two ends.
The above only, to preferred embodiment of the present utility model, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.Every in claim limited range of the present utility model, any amendment of making, be equal to replacement, improvement etc., all should be within protection range of the present utility model.
Claims (1)
1. a harmonic wave voltage stabilizing governing system, is characterized in that, comprises the surge absorber, filter, rectifier and the inverter that are linked in sequence successively, also comprises the controller being connected with described rectifier, described inverter, and described controller is provided with dsp chip;
Described inverter comprises the bridge inverter main circuit that four power switch pipes form, and described four power switch pipes are respectively the first power switch pipe, the second power switch pipe, the 3rd power switch pipe, the 4th power switch pipe;
The collector electrode of described the first power switch pipe is connected with the collector electrode of described the second power switch pipe, and the emitting stage of described the 3rd power switch pipe is connected with the emitting stage of described the 4th power switch pipe; The grid of described the first power switch pipe is connected with the first resistance, and the grid of described the second power switch pipe is connected with the second resistance, and the grid of described the 3rd power switch pipe is connected with the 3rd resistance, and the grid of described the 4th power switch pipe is connected with the 4th resistance; The two ends of described the first resistance are parallel with the first diode, and described the second resistance two ends are parallel with the second diode, and described the 3rd resistance two ends are parallel with the 3rd diode, and described the 4th resistance two ends are parallel with the 4th diode; Between the emitter of one end of described the first resistance and described the first power switch pipe, be connected with the 5th resistance, between the emitter of one end of described the second resistance and described the second power switch pipe, be connected with the 7th resistance, between the emitter of one end of described the 3rd resistance and described the 3rd power switch pipe, be connected with the 6th resistance, between one end of described the 4th resistance and the emitter of described the 4th power switch pipe, be connected with the 8th resistance; One end of described the 6th resistance is connected with the 9th resistance;
Tie point between described the first power switch pipe and described the 3rd power switch pipe has formed and has exchanged output AC end with the tie point between described the second power switch pipe and described the 4th power switch pipe; Tie point between described the first power switch pipe and described the 3rd power switch pipe is connected to the tie point between described the second power switch pipe and described the 4th power switch pipe by the first inductance and the second electric capacity, two ends second inductance in parallel of described the second electric capacity, described the second inductance two ends the 3rd electric capacity in parallel, after the 4th electric capacity and the 5th capacitances in series and at described the 3rd electric capacity two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320782883.7U CN203645550U (en) | 2013-11-27 | 2013-11-27 | Harmonic voltage stabilization control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320782883.7U CN203645550U (en) | 2013-11-27 | 2013-11-27 | Harmonic voltage stabilization control system |
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| Publication Number | Publication Date |
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| CN203645550U true CN203645550U (en) | 2014-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320782883.7U Expired - Lifetime CN203645550U (en) | 2013-11-27 | 2013-11-27 | Harmonic voltage stabilization control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103607122A (en) * | 2013-11-27 | 2014-02-26 | 西安合电电气有限公司 | Harmonic voltage stabilization control system |
-
2013
- 2013-11-27 CN CN201320782883.7U patent/CN203645550U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103607122A (en) * | 2013-11-27 | 2014-02-26 | 西安合电电气有限公司 | Harmonic voltage stabilization control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHINA RAILWAY FIRST SURVEY + DESIGN INSTITUTE GROU Effective date: 20150601 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150601 Address after: 710000, 1, 41802 studio apartment, new industrial park, hi tech Zone, Shaanxi, Xi'an Patentee after: XI'AN HED-ELECTRONIC CO.,LTD. Patentee after: CHINA RAILWAY FIRST SURVEY AND DESIGN INSTITUTE GROUP Co.,Ltd. Address before: 710000, 1, 41802 studio apartment, new industrial park, hi tech Zone, Shaanxi, Xi'an Patentee before: XI'AN HED-ELECTRONIC CO.,LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |