CN203734307U - Vehicle-borne integrated filter - Google Patents
Vehicle-borne integrated filter Download PDFInfo
- Publication number
- CN203734307U CN203734307U CN201420101389.4U CN201420101389U CN203734307U CN 203734307 U CN203734307 U CN 203734307U CN 201420101389 U CN201420101389 U CN 201420101389U CN 203734307 U CN203734307 U CN 203734307U
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- vehicle
- capacitor
- side converter
- filter circuit
- inductance
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- 239000003990 capacitor Substances 0.000 claims description 30
- 230000015572 biosynthetic process Effects 0.000 claims description 21
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- 230000008901 benefit Effects 0.000 abstract description 2
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- 230000003137 locomotive effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
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- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
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- 230000001681 protective effect Effects 0.000 description 1
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Classifications
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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
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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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- Electric Propulsion And Braking For Vehicles (AREA)
- Inverter Devices (AREA)
Abstract
The utility model discloses a vehicle-borne integrated filter comprising a passive filter circuit and a grid-side converter, wherein the passive filter circuit is connected in parallel to a secondary side of a traction transformer and is connected to the input end of the grid-side converter, the output end of the grid-side converter is connected with a machine-side converter, and the traction transformer is connected with a traction power supply grid. The vehicle-borne integrated filter of the utility model has the advantages of simple and compact structure, simple principle, wide application range, high safety and reliability and the like.
Description
Technical field
The utility model is mainly concerned with the power supply technique field of electric traction vehicle, refers in particular to a kind of vehicle-mounted synthesis filter that is applicable to electric traction vehicle.
Background technology
In recent years, along with the continuous quickening of electric railway construction speed, alternating current electric locomotive and motor train unit become the large harmonic source of two in electric power system gradually, have caused the problem of a series of relevant qualities of power supply.Alternating current electric locomotive harmonic spectrum distributes wide, when traction network parameters meets certain condition, the harmonic wave of some number of times may be amplified, and car net resonance even occurs; High order harmonic component also can cause DC locomotive RC loop scaling loss; the Explosion of on Arrester of vehicle-mounted or electric substation; the insulation breakdown of mobile unit, scaling loss and protective device misoperation etc. are directly shielded in the friendship of electric substation, and the safe operation of electric railway and electric power network has been brought to very large harm.
The railway transportation of current China of take is example, be in now straight, the mixed race pattern of friendship orthogonal of handing over, harmonic content in tractive power supply system is enriched, frequency band distribution is extensive, greatly increased the possibility of system generation harmonic resonance, this not only can work the mischief to the equipment of tractive power supply system itself, and the overvoltage causing, overcurrent also will jeopardize the safe and stable operation of whole system.For improving electrified railway electric energy quality, each side has taked a lot of measures, but the effect obtaining is limited.
For administering harmonic wave, the current way of taking is mainly, at the access point place of electric iron system and electrical network, passive or active power compensator is installed.Traditional Passively compensated device adopts LC passive filter, and structure and principle are simple, easy to maintenance, reliable, cost is lower, and major defect is the impact that its compensation characteristic is subject to electric network impedance and running status, easily and system generation parallel resonance, compensation effect is also barely satisfactory.By contrast, active filter can carry out dynamic real-Time Compensation to size and the frequency harmonic wave that all change and variation idle, and response soon, is affected by electrical network parameter less, be difficult for causing system resonance, but investment cost is crossed high factor and has been hindered again applying of active filter.For this reason, most common practice are: the harmonic wave control of ac tracting network is mainly concentrated on the development and application of ground harmonic treating apparatus, ground installation is generally arranged near electric substation, in parallel with traction power supply net feeder line, the harmonic wave of a supply arm is concentrated to improvement, and electric pressure is higher, parts selection difficulty, the fail safe of device is also not easy to guarantee, and device volume is large.
Utility model content
The technical problems to be solved in the utility model is just: the technical problem existing for prior art, the utility model provide a kind of simple and compact for structure, principle is simple, applied widely, reliability and safe vehicle-mounted synthesis filter.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of vehicle-mounted synthesis filter, comprise passive filter circuit and net side converter, described passive filter circuit is connected in parallel on the secondary side of traction transformer, and be connected in the input of net side converter, the output junctor side converter of described net side converter, described traction transformer is connected with traction power supply net.
As further improvement of the utility model: described passive filter circuit comprises capacitor C, inductance L and the resistance R being cascaded.
As further improvement of the utility model: described passive filter circuit comprises capacitor C and the inductance L being cascaded.
As further improvement of the utility model: described passive filter circuit comprises capacitor C, inductance L and resistance R, and resistance R is connected with capacitor C with after inductance L parallel connection.
As further improvement of the utility model: described passive filter circuit comprises the first capacitor C 1, the second capacitor C 2, inductance L and resistance R, the second capacitor C 2 is in parallel with inductance L after connecting with resistance R, connects afterwards with the first capacitor C 1 again.
As further improvement of the utility model: Support Capacitor in parallel between described net side converter and pusher side current transformer.
As further improvement of the utility model: the rectifier that described net side converter is AuCT, is used for providing stable middle dc voltage and low-order harmonic that main traction convertor is produced compensates to subordinate inverter.
Compared with prior art, the utility model has the advantage of:
1, vehicle-mounted synthesis filter of the present utility model, is applicable to alternating current electric locomotive and motor train unit, and multiplexing net side converter, only increases passive filter circuit, and reliability and fail safe easily guarantee.
2, vehicle-mounted synthesis filter of the present utility model takes into full account reactive power compensation and two functions of harmonic wave control when design, need not establish separately power capacitor reactive compensation installation again, both can play governance role, can reach synergy object again.
3, vehicle-mounted synthesis filter of the present utility model, the optional combining form of passive filter circuit is more, can, by changing branch road quantity, change each branch road electric capacity, inductance parameters etc., farthest practical requirement;
4, vehicle-mounted synthesis filter of the present utility model, can realize passive filter, active filter and passive+three kinds of active filters harmonic wave control scheme by the change mode of connection in actual use;
5, vehicle-mounted synthesis filter of the present utility model, outside passive filter circuit, this vehicle-mounted synthesis filter does not need to increase other electric equipment, and this feature makes its alternating current electric locomotive that is applicable to space layout compactness completely or motor train unit;
6, vehicle-mounted synthesis filter of the present utility model, passive filter circuit act on Electric Network Higher Harmonic outside, near the high order harmonic component switching frequency producing in the time of also can moving current transformer weakens and reduces;
7, vehicle-mounted synthesis filter of the present utility model, directly harness of harmonic wave is realized in electric locomotive, motor train unit, when handling the harmonic wave that load itself produces well, can also administer the harmonic wave in traction power supply net, be different from conventional ground and concentrate governance model, and after application, can significantly reduce the capacity of ground controlling device, cost-saving.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the utility model in concrete application example.
Fig. 2 a is the structural principle schematic diagram of the first passive filter circuit in concrete application example.
Fig. 2 b is the structural principle schematic diagram of the second passive filter circuit in concrete application example.
Fig. 2 c is the structural principle schematic diagram of the third passive filter circuit in concrete application example.
Fig. 2 d is the structural principle schematic diagram of the 4th kind of passive filter circuit in concrete application example.
Fig. 3 is the circuit structure principle schematic of the utility model in concrete application example.
Fig. 4 is net side converter control unit input/output signal schematic diagram in concrete application example.
Marginal data:
1, passive filter circuit; 2, net side converter; 3, Support Capacitor; 4, traction transformer; 5, pusher side current transformer.
Embodiment
Below with reference to Figure of description and specific embodiment, the utility model is described in further details.
As shown in Figure 1, vehicle-mounted synthesis filter of the present utility model, comprises passive filter circuit 1 and net side converter 2, and wherein passive filter circuit 1 is connected in parallel on the secondary side of traction transformer 4, and be connected in the input of net side converter 2, the output junctor side converter 5 of net side converter 2.Traction transformer 4 is connected with traction power supply net, the input by the inferior limit winding of traction transformer 4 as vehicle-mounted synthesis filter of the present utility model, and passive filter circuit 1 is realized the high order harmonic component in 800Hz ~ 3000Hz frequency band range is administered.Further, can also be at Support Capacitor 3 in parallel between net side converter 2 and pusher side current transformer 5.The utility model is from locomotive and these two kinds of harmonic sources of motor train unit, and at net side converter 2, exchanging end increases passive filter circuit 1, promotes simultaneously and improves the control function of net side converter 2, thereby realize the dual-use function of passive filter and active filter.Wherein, passive filter circuit 1 one is the improvement that can realize Electric Network Higher Harmonic, the 2nd, can reduce and weaken near the high order harmonic component of switching frequency sideband that current transformer itself produces.Net side converter 2, except outside original rectification function, also can have low-order harmonic concurrently and generate and no-power compensation function.
In concrete application example, be the structure of the concrete passive filter circuit 1 of the first as shown in Figure 2 a, comprise the capacitor C, inductance L and the resistance R that are cascaded.Be the structure of the concrete passive filter circuit 1 of the second as shown in Figure 2 b, comprise the capacitor C and the inductance L that are cascaded.Be the structure of the third concrete passive filter circuit 1 as shown in Figure 2 c, comprise capacitor C, inductance L and resistance R, resistance R is connected with capacitor C with after inductance L parallel connection.Be the structure of the 4th kind of concrete passive filter circuit 1 as shown in Figure 2 d, comprise the first capacitor C 1, the second capacitor C 2, inductance L and resistance R, the second capacitor C 2 is in parallel with inductance L after connecting with resistance R, connects afterwards with the first capacitor C 1 again.The passive filter circuit 1 of above-mentioned four kinds of forms all can be directly parallel in the secondary side of traction transformer 4, and can be according to practical application request, increase and decrease circuit quantity or select multiple circuit form to combine, each electric capacity, inductance, resistance parameter also can flexible configuration, reach thus optimum filtering effect.The composition form of passive filter circuit 1 is a lot of, and its protection range is not limited to four kinds that list herein.
As shown in Figure 3, in a concrete application example, two tractive winding a1-x1, a2-x2 of traction transformer 4 are connected to respectively heavily net side converter and a double net side converter, the structure of selecting above-mentioned the second form passive filter circuit 1 is coupled to tractive winding a1-x1 two ends, and the structure of the third form passive filter circuit 1 is parallel to tractive winding a2-x2 two ends.L1, L2 are respectively one, the input inductance of double net side converter, and C11, C12 are respectively one, the intermediate supports electric capacity 3 of double net side converter, and C12, C22 are the Support Capacitor 3 of pusher side current transformer 5, S1, S2 ... S20 is IGBT device.
The variablees such as voltage sensor and current sensor Gather and input voltage, input current, middle dc voltage, middle voltage are sent into the control unit of net side converter 2, by control algolithm, calculate, and finally send the break-make that pwm pulse is controlled each IGBT device.For realizing the function of active filter, do not need to change the circuit structure of net side converter 2, only 3,5,7 inferior harmonic waves in traction transformer 4 primary currents need be extracted, transmit the control unit of network access side converter 2, by improvement and the lifting of algorithm, it is administered.In addition, also can realize when needed reactive power compensation.
In specific embodiment, referring to Fig. 4, net side converter 2 generally can be selected the rectifier of AuCT, make it except completing traditional unity power factor control, to subordinate inverter, provide outside stable middle dc voltage, the low-order harmonic (3,5,7 is inferior) also main traction convertor being produced compensates.Principle according to this, the rectifier of main traction convertor also can used as said purpose.
Below be only preferred implementation of the present utility model, protection range of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection range of the present utility model.It should be pointed out that for those skilled in the art, the some improvements and modifications not departing under the utility model principle prerequisite, should be considered as protection range of the present utility model.
Claims (7)
1. a vehicle-mounted synthesis filter, it is characterized in that, comprise passive filter circuit and net side converter, described passive filter circuit is connected in parallel on the secondary side of traction transformer, and be connected in the input of net side converter, the output junctor side converter of described net side converter, described traction transformer is connected with traction power supply net.
2. vehicle-mounted synthesis filter according to claim 1, is characterized in that, described passive filter circuit comprises capacitor C, inductance L and the resistance R being cascaded.
3. vehicle-mounted synthesis filter according to claim 1, is characterized in that, described passive filter circuit comprises capacitor C and the inductance L being cascaded.
4. vehicle-mounted synthesis filter according to claim 1, is characterized in that, described passive filter circuit comprises capacitor C, inductance L and resistance R, and resistance R is connected with capacitor C with after inductance L parallel connection.
5. vehicle-mounted synthesis filter according to claim 1, it is characterized in that, described passive filter circuit comprises the first capacitor C 1, the second capacitor C 2, inductance L and resistance R, and the second capacitor C 2 is in parallel with inductance L after connecting with resistance R, connects afterwards with the first capacitor C 1 again.
6. according to the vehicle-mounted synthesis filter described in any one in claim 1～5, it is characterized in that Support Capacitor in parallel between described net side converter and pusher side current transformer.
7. according to the vehicle-mounted synthesis filter described in any one in claim 1～5, it is characterized in that, the rectifier that described net side converter is AuCT, is used for stable middle dc voltage being provided and the low-order harmonic of main traction convertor generation being compensated to subordinate inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420101389.4U CN203734307U (en) | 2014-03-07 | 2014-03-07 | Vehicle-borne integrated filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420101389.4U CN203734307U (en) | 2014-03-07 | 2014-03-07 | Vehicle-borne integrated filter |
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| Publication Number | Publication Date |
|---|---|
| CN203734307U true CN203734307U (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420101389.4U Expired - Fee Related CN203734307U (en) | 2014-03-07 | 2014-03-07 | Vehicle-borne integrated filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114123822A (en) * | 2021-12-06 | 2022-03-01 | 湖南大学 | Reusable grid-side converter for multi-flow locomotive |
-
2014
- 2014-03-07 CN CN201420101389.4U patent/CN203734307U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114123822A (en) * | 2021-12-06 | 2022-03-01 | 湖南大学 | Reusable grid-side converter for multi-flow locomotive |
| CN114123822B (en) * | 2021-12-06 | 2023-06-23 | 湖南大学 | Reusable network side converter for multi-stream locomotive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 |