CN105099148A - Filtering cabinet at output end of auxiliary current transformer of electric locomotive - Google Patents
Filtering cabinet at output end of auxiliary current transformer of electric locomotive Download PDFInfo
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- CN105099148A CN105099148A CN201510466340.8A CN201510466340A CN105099148A CN 105099148 A CN105099148 A CN 105099148A CN 201510466340 A CN201510466340 A CN 201510466340A CN 105099148 A CN105099148 A CN 105099148A
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- cabinet
- filter
- filtering
- electric locomotive
- circuits
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- Inverter Devices (AREA)
Abstract
The invention provides a filtering cabinet at the output end of an auxiliary current transformer of an electric locomotive, and the filtering cabinet can realize ground power supply when the locomotive moves in a shed. The filtering cabinet comprises an auxiliary transformer of high leakage inductance, a three-phase capacitor, a transformer output grounding detector, an in-shed pre-charging circuit, a steel structure frame and an aluminum alloy assembly. Two identical filtering circuits are integrated in the filtering cabinet, the filtering circuits are redundant to each other, the filtering circuits filter the output voltage of the auxiliary current transformer, and it is ensured that the voltage harmonic wave content at the load end satisfies requirements. According to the filtering cabinet, design of parts in the cabinet is compact, the bearing frame of the cabinet uses the steel structure and other parts uses aluminum alloy structure to reduce the weight of the cabinet body, and thus, the filtering cabinet is light.
Description
Technical field
The present invention relates to rolling stock manufacturing technology, particularly relate to a kind of filter cabinet of auxiliary converter of electric locomotive output.
Background technology
The AuCT of electric locomotive generally adopts DC-AC inverter circuit, the load on locomotive except traction, and power supply all comes from AuCT.AuCT generally adopts PWM control technology, and the voltage of output contains a large amount of harmonic wave.In order to reduce the harmonic content of output voltage, need to design low pass filter, the high order harmonic component that filtering inverter exports.
In the prior art, a usual AuCT exports a corresponding filter cabinet, and exporting two groups of current transformers just needs two filter cabinets.Filter cabinet interior circuit construction, and external electric and mechanical interface is basically identical, cabinet generally all adopts steel construction, and therefore form identical electric wiring structure and Interface Terminal row etc., and steel construction cabinet is heavy, two filter cabinets take larger interior space.
In locomotive, space layout is nervous, and when weight demands is strict, the installing space of two filter cabinets is restricted, and reduces the utilance of interior space.Therefore, need design height integrated, the cabinet of compact conformation, be convenient to electric locomotive inside and rearrange.
Summary of the invention
For the above-mentioned defect of prior art, the invention provides a kind of auxiliary converter of electric locomotive output filter cabinet.This filter cabinet, in a cabinet, be integrated with two cover filter circuits, reduction installing space installed side by side by auxiliary transformer, and cabinet load-bearing frame adopts steel construction, and all the other mounting portions all adopt aluminum alloy materials, realize light-weight design theory.
The invention provides a kind of auxiliary converter of electric locomotive output filter cabinet, comprising: the auxiliary transformer with high leakage inductance, three-phase capacitor, transformer exports ground detection device and Ku Nei motor-car pre-charge circuit, steel structure frame and aluminium alloy component etc.
Auxiliary converter of electric locomotive output filter cabinet as above, in a cabinet, be integrated with two cover filter circuits, reduction installing space installed side by side by auxiliary transformer, and integral design method taked by capacitor, three capacitor design, in a capacitor box, only draw three binding posts.
Auxiliary converter of electric locomotive output filter cabinet provided by the invention, transformer takes separate space to dispel the heat.The vertical transformer in air channel, is convenient to take away transformer heat fast.
Auxiliary converter of electric locomotive output filter cabinet provided by the invention, parts take compact design, weight mainly concentrates on transformer, cabinet load-bearing frame adopts steel construction, all the other mounting portions and wind inlet channel all adopt aluminum alloy materials, under guarantee structural strength condition, realize light-weight design theory.
Accompanying drawing explanation
Fig. 1 is the electric topology structural representation of a kind of auxiliary converter of electric locomotive output filter cabinet that the present invention relates to;
Fig. 2 is a kind of auxiliary converter of electric locomotive output filter cabinet topology layout schematic diagram that the present invention relates to;
Accompanying drawing main mark illustrates:
TF1-auxiliary transformer 1; TF2-auxiliary transformer 2;
C12-three-phase filter capacitor 1; C22-three-phase filter capacitor 2;
K21-pre-charge contactor; K22-filter capacitor electric discharge contactor.
Embodiment
Fig. 1 is the electric topology structural representation of a kind of auxiliary converter of electric locomotive output filter cabinet that the present invention relates to, as shown in Figure 1, the AuCT output filter cabinet electric topology that the present embodiment provides, filter 2 adds motor-car pre-charge circuit in storehouse than filter 1.With filter 2 for description object, transformer TF2 is designed with larger leakage inductance, and leakage inductance and three-phase capacitor C22 form the higher harmonic voltage of low pass filter filtering input voltage.
The AuCT output filter cabinet that the present embodiment provides, C21, R21 and R22 are transformer grounding testing circuits.C21, R21 form high frequency voltage and eliminate circuit, eliminate high-frequency harmonic or peak voltage burr.When earth fault appears in transformer time, R22 produces very large electrical potential difference, and earth current flows through circuit breaker K23, and auxiliary contacts of circuit breaker sends earth-fault signal, plays the function of earthing detection.
The AuCT output filter cabinet that the present embodiment provides, when in storehouse, motor-car needs to power to locomotive ground, closed contactor K21, by " in storehouse motor-car precharge " interface in Fig. 1 to intermediate capacitance precharge, R24 object is the electric current in order to limit precharge.After precharge terminates, carry out surface power supply by " filter 2 exports ".
The AuCT output filter cabinet that the present embodiment provides, time in storehouse, motor-car is powered, contactor K22 disconnects, and avoids the charging of electric capacity C22.When contactor K22 disconnects suddenly for some reason, in order to discharge to fast filter capacitor C22, electric capacity C22 also shows discharge resistance R23.
AuCT output filter cabinet that the present embodiment provides, circuit realiration current transformer output voltage filtering, has earthing detection function.Two cover filters redundancy each other, when set of circuits fault, another group can bear whole load, considerably increases the reliability of locomotive operation.
Fig. 2 is AuCT output filter cabinet topology layout schematic diagram of the present invention.As shown in Figure 2, in the auxiliary converter of electric locomotive output filter cabinet that the present embodiment provides, comprising: two auxiliary transformers, two three-phase capacitors, grounded inspection circuit and Ku Nei motor-car pre-charge circuit.
The AuCT output filter cabinet that the present embodiment provides, saving installing space installed side by side by auxiliary transformer.Integral design method taked by capacitor, and three capacitor design, in a capacitor box, only draw three binding posts.Two capacitors are installed up and down, save installing space.All parts take compactedness to design, compression cabinet volume.
The AuCT output filter cabinet that the present embodiment provides, transformer is topmost thermal component, narrow space in cabinet, and for strengthening transformer heat radiation, for design of transformer has independent installing space, the vertical transformer in air channel, is convenient to transformer quick heat radiating.
The AuCT output filter cabinet that the present embodiment provides, transformer occupies most of weight of filter cabinet, and load-bearing frame adopts steel construction, and all the other mounting portions and wind inlet channel all adopt aluminum alloy materials, under guarantee structural strength condition, realize light-weight design theory.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (5)
1. the filter cabinet of an auxiliary converter of electric locomotive output, it is characterized in that, electric capacity precharge when this filter cabinet achieves motor-car in storehouse, it comprises: two cover filter circuits, transformer exports ground detection device and Ku Nei motor-car pre-charge circuit, steel structure frame and aluminium alloy component etc.
2. the filter cabinet of a kind of auxiliary converter of electric locomotive output according to claim 1, is characterized in that, described two cover filter circuits redundancy each other, during set of circuits fault, another set of circuits can bear whole load.
3. the filter cabinet of a kind of auxiliary converter of electric locomotive output according to claim 2, is characterized in that, the two cover filter circuits that described filter cabinet comprises adopt compact design, reduce filter cabinet volume as much as possible.
4. the filter cabinet of a kind of auxiliary converter of electric locomotive output according to claim 3, it is characterized in that, compact design taked by two cover filter circuits, and its filter cabinet load-bearing frame adopts steel construction, other parts adopt aluminium alloy to reduce cabinet weight, realize light-weight design.
5., according to the filter cabinet of the arbitrary described a kind of auxiliary converter of electric locomotive output of Claims 1-4, it is characterized in that, described filter cabinet achieves the output voltage filtering of current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510466340.8A CN105099148A (en) | 2015-07-31 | 2015-07-31 | Filtering cabinet at output end of auxiliary current transformer of electric locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510466340.8A CN105099148A (en) | 2015-07-31 | 2015-07-31 | Filtering cabinet at output end of auxiliary current transformer of electric locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105099148A true CN105099148A (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510466340.8A Pending CN105099148A (en) | 2015-07-31 | 2015-07-31 | Filtering cabinet at output end of auxiliary current transformer of electric locomotive |
Country Status (1)
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| CN (1) | CN105099148A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107404073A (en) * | 2017-08-07 | 2017-11-28 | 河南森源电气股份有限公司 | Low voltage switch equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000175458A (en) * | 1998-12-07 | 2000-06-23 | Mitsubishi Electric Corp | Auxiliary power source unit for rolling stock |
| CN101903202A (en) * | 2007-12-14 | 2010-12-01 | 邦巴尔迪尔运输有限公司 | Arrangement for supplying devices of a locomotive with electric energy and method for operating said arrangement |
| CN102638155A (en) * | 2012-03-21 | 2012-08-15 | 株洲南车时代电气股份有限公司 | Centralized auxiliary converter |
| CN103138622A (en) * | 2011-11-22 | 2013-06-05 | 永济新时速电机电器有限责任公司 | Auxiliary power supply system and electric locomotive |
| CN103138184A (en) * | 2011-12-01 | 2013-06-05 | 永济新时速电机电器有限责任公司 | Locomotive converter cabinet |
-
2015
- 2015-07-31 CN CN201510466340.8A patent/CN105099148A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000175458A (en) * | 1998-12-07 | 2000-06-23 | Mitsubishi Electric Corp | Auxiliary power source unit for rolling stock |
| CN101903202A (en) * | 2007-12-14 | 2010-12-01 | 邦巴尔迪尔运输有限公司 | Arrangement for supplying devices of a locomotive with electric energy and method for operating said arrangement |
| CN103138622A (en) * | 2011-11-22 | 2013-06-05 | 永济新时速电机电器有限责任公司 | Auxiliary power supply system and electric locomotive |
| CN103138184A (en) * | 2011-12-01 | 2013-06-05 | 永济新时速电机电器有限责任公司 | Locomotive converter cabinet |
| CN102638155A (en) * | 2012-03-21 | 2012-08-15 | 株洲南车时代电气股份有限公司 | Centralized auxiliary converter |
Non-Patent Citations (1)
| Title |
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| 刘宏等: "一种集成式辅助电源模式的介绍", 《电力机车与城轨车辆》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107404073A (en) * | 2017-08-07 | 2017-11-28 | 河南森源电气股份有限公司 | Low voltage switch equipment |
| CN107404073B (en) * | 2017-08-07 | 2023-12-22 | 河南森源电气股份有限公司 | Low-voltage switching device |
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Application publication date: 20151125 |
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