CN201584769U - Overvoltage suppressing and protecting device for auxiliary converter cabinet of locomotive - Google Patents
Overvoltage suppressing and protecting device for auxiliary converter cabinet of locomotive Download PDFInfo
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- CN201584769U CN201584769U CN2009202662082U CN200920266208U CN201584769U CN 201584769 U CN201584769 U CN 201584769U CN 2009202662082 U CN2009202662082 U CN 2009202662082U CN 200920266208 U CN200920266208 U CN 200920266208U CN 201584769 U CN201584769 U CN 201584769U
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Abstract
The utility model discloses an overvoltage suppressing and protecting device which comprises an overvoltage suppressing circuit and a drive control circuit, wherein the overvoltage suppressing circuit is respectively connected with a middle circuit and the drive control circuit of the auxiliary converter cabinet of the locomotive; the drive control circuit is connected with an external control system of the auxiliary converter cabinet of locomotive; the drive control circuit receives external trigger signals from the external control system, and the external trigger signals drive the overvoltage suppressing circuit to suppress the voltage in the middle circuit; and the drive control circuit can obtain voltage of the middle circuit and judge whether the voltage of the middle circuit is larger than the set threshold value or not, if the voltage of the middle circuit is larger than the set threshold value, the drive control circuit can output internal trigger signals which drive the overvoltage suppressing circuit to suppress the voltage of the middle circuit so as to realize the overvoltage protection to the middle circuit of the auxiliary converter cabinet of the locomotive.
Description
Technical field
The present invention relates to a kind of overvoltage and suppress protection, the overvoltage that relates in particular to the auxiliary unsteady flow cabinet of a kind of locomotive suppresses protective device.
Background technology
In the main circuit of the auxiliary unsteady flow cabinet of HXD2 locomotive, adopt the circuit pattern conversion of DC-DC-AC to obtain three-phase alternating current output.Its input power supply DC1800V takes from the intermediate circuit of main convertor on the locomotive; through the buck chopper device; the smoothing reactor of intermediate circuit and the Filtering Processing of capacitor; obtain stable intermediate voltage DC540V; and in actual conditions; because locomotive operation situation complexity; very likely cause the intermediate voltage DC540V of output that the unstable situation that voltage rises takes place; when the intermediate voltage of output is excessive; easily equipment is caused damage; therefore; when output voltage exceeds certain limit, carry out overvoltage to the intermediate voltage DC540V of output and suppress, realize overvoltage protection to middle circuit.
The utility model content
The utility model provides the inhibition overvoltage to suppress protective device, is used for that auxiliary unsteady flow cabinet intermediate circuit is carried out overvoltage and suppresses protection.
The overvoltage that the purpose of this utility model provides the auxiliary unsteady flow cabinet of locomotive suppresses protective device, and this device comprises: overvoltage suppresses circuit and Drive and Control Circuit; Wherein,
Described overvoltage suppresses circuit and is connected with intermediate circuit, the Drive and Control Circuit of the auxiliary unsteady flow cabinet of described locomotive respectively; Described Drive and Control Circuit is connected with the external control system of the auxiliary unsteady flow cabinet of described locomotive;
Described Drive and Control Circuit receives outer triggering signal from described external control system, and described outer triggering signal drives described overvoltage and suppresses the voltage that circuit suppresses described intermediate circuit;
The intermediate circuit voltage that described Drive and Control Circuit is obtained from described intermediate circuit, judge that whether described intermediate circuit voltage is greater than setting threshold, if, then export the internal trigger signal, described internal trigger signal drives described overvoltage and suppresses the voltage that circuit suppresses described intermediate circuit.Thereby assist the voltage of the intermediate circuit of unsteady flow cabinet to suppress to locomotive, realize overvoltage protection auxiliary unsteady flow cabinet.
Description of drawings
Fig. 1 suppresses the protective device logic diagram for the utility model overvoltage;
Fig. 2 suppresses the electrical schematic diagram of protective device for the utility model overvoltage;
Fig. 3 is the electrical schematic diagram of the novel Drive and Control Circuit of this use;
Fig. 4 is the stereogram that overvoltage of the present utility model suppresses protective device;
Fig. 5 is the stereogram of steel structure spare of the present utility model;
Fig. 6 is a drive controlling plate stereogram;
Fig. 7 suppresses the vertical view of protective device for the utility model overvoltage;
Fig. 8 suppresses the end view of protective device for the utility model overvoltage;
Fig. 9 is the schematic diagram that is electrically connected of Drive and Control Circuit and external control system.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer,, the technical scheme among the utility model embodiment is clearly and completely described below in conjunction with the accompanying drawing among the utility model embodiment.At this, the illustrative examples of present embodiment and explanation thereof are used to explain present embodiment, but not as to qualification of the present utility model.
The auxiliary unsteady flow cabinet overvoltage of a kind of locomotive suppresses protective device, and this device comprises: overvoltage suppresses circuit and Drive and Control Circuit; Overvoltage suppresses circuit and is connected with intermediate circuit, the Drive and Control Circuit of the auxiliary unsteady flow cabinet of locomotive respectively; Drive and Control Circuit is connected with the external control system of the auxiliary unsteady flow cabinet of locomotive; Drive and Control Circuit receives outer triggering signal from external control system, and outer triggering signal drives overvoltage and suppresses the voltage that circuit suppresses intermediate circuit; Whether Drive and Control Circuit judges intermediate circuit voltage greater than setting threshold from the intermediate circuit voltage that middle circuit obtains, if, then export the internal trigger signal, the internal trigger signal drives overvoltage and suppresses the voltage that circuit suppresses intermediate circuit.
Figure 1 shows that the logic diagram of the utility model embodiment.The overvoltage of the auxiliary unsteady flow cabinet of the utility model locomotive suppresses protective device 10, comprises that overvoltage suppresses circuit 101 and Drive and Control Circuit 102, and Drive and Control Circuit is connected to overvoltage by splicing ear K, G and suppresses circuit 101.In the present embodiment, described Drive and Control Circuit 102 comprises: connector 1023 connects the external control system 20 that described locomotive is assisted the unsteady flow cabinet; External trigger circuit part 1022 connects connector 1023, and start pulse signal is converted into trigger voltage; Internal trigger circuit part 1021 connects the intermediate circuit of auxiliary unsteady flow cabinet, and intermediate circuit voltage is carried out the capacitance energy storage discharge during greater than setting threshold, produces trigger voltage; Splicing ear K, G are connected to described overvoltage with Drive and Control Circuit 102 and suppress circuit 101; Overvoltage suppresses circuit 101, when receiving the trigger voltage of described Drive and Control Circuit 102 transmissions, the intermediate circuit of assisting the unsteady flow cabinet is carried out overvoltage suppress protection.
Be illustrated in figure 2 as the electrical schematic diagram of the utility model overvoltage restraining device.Wherein, 201 are the utility model overvoltage inhibition protective device; 202 circuit theory diagrams for overvoltage inhibition circuit 101 comprise voltage stabilizing didoe V1, thyristor V2, decoupling capacitance C1, suppress reactor L1, adopt thyristor as suppressing voltage component in the present embodiment.The two ends that overvoltage suppresses circuit connect protected intermediate circuit; 203 is Drive and Control Circuit, Drive and Control Circuit HT end be connected to overvoltage suppress circuit 101 decoupling capacitance+utmost point, K end, G end are connected respectively to negative electrode K and the control utmost point G that overvoltage suppresses the thyristor V1 of circuit 101.
Fig. 3 is the circuit theory diagrams of Drive and Control Circuit 102.Wherein, external trigger circuit part 1022 comprises, voltage stabilizing circuit 301, pulse transformer 302, filter circuit 303; Internal trigger circuit part 1021 comprises, voltage stabilizing didoe V10 and the low-voltage BOD circuit 304 that resets.
It is as follows to the course of work that the intermediate circuit of the auxiliary unsteady flow cabinet of HXD2 locomotive carries out overvoltage protection that the auxiliary unsteady flow cabinet overvoltage of the utility model locomotive suppresses protective device:
In the auxiliary unsteady flow cabinet of HXD2 locomotive, adopt external control system to detect intermediate voltage, when the intermediate voltage of detected intermediate circuit is higher than 730V, external control system sends trigger impulse to Drive and Control Circuit 102, trigger impulse carries out power amplification and electrical isolation by 302 pairs of trigger impulses of pulse transformer, after wave circuit 303 carries out filtering after filtration through after the voltage stabilizing and filtering spike burr of voltage stabilizing circuit 301, obtain trigger voltage, drive thyristor V2 by this trigger voltage.When middle direct voltage surpasses 730V, when external control system is not given an order or the external trigger circuit part lost efficacy (, when at least a portion among voltage stabilizing circuit 301, pulse transformer 302, filter circuit 303 threes breaks down), after intermediate circuit voltage rises to 800V, then the voltage stabilizing didoe V10 in the internal trigger circuit part is breakdown, by the discharge of the capacitance energy storage in the BOD circuit 304, send trigger voltage to thyristor V2, trigger the controllable silicon conducting.
Overvoltage suppresses protective device and also comprises circuit carriers, and overvoltage suppresses circuit and Drive and Control Circuit is fixed on the circuit carriers.Circuit carriers comprises: mounting panel, Drive and Control Circuit plate and inhibition circuit frame, and Drive and Control Circuit plate and inhibition circuit frame are fixed on the mounting panel; The Drive and Control Circuit plate is used to carry Drive and Control Circuit; Suppress the circuit frame and be used to carry overvoltage inhibition circuit.Fig. 4 is the stereogram that overvoltage of the present utility model suppresses protective device, and circuit carriers comprises in the embodiment of Fig. 4, steel construction piece 401, and voltage stabilizing didoe 405 (V1), thyristor 406 (V2), decoupling capacitance 404 (C1) are secured to steel structure spare 401; Mounting panel 402 suppresses reactor 403 (L1) and is fixed in mounting panel 402; Drive controlling plate 405 is installed and mounting panel 402.As shown in Figure 5, the stereogram that suppresses the steel construction piece 401 of protective device for the utility model overvoltage.All use the M6x25 bolted between each device and steel structure spare.Be illustrated in figure 6 as the stereogram of drive controlling plate 405, drive controlling plate 405 mechanical parameters:
Drive plate thickness 2mm;
Drive plate overall dimension 159mm * 80mm;
Installing hole size 5-Φ 7mm
The electrode input end of intermediate circuit is connected to the K end steel structure spare of voltage stabilizing didoe V1, and the intermediate circuit negative input is connected to the A end steel structure spare of voltage stabilizing didoe V1; The A that the negative pole of decoupling capacitance C1 is directly installed on voltage stabilizing didoe V1 holds realization electrical connection on the steel structure spare, and other end positive pole is realized being electrically connected with the K end steel structure spare of voltage stabilizing didoe V1 by copper litz wire; Suppressing the A0 end of reactor L1 realizes being electrically connected with the A end steel structure spare of voltage stabilizing didoe V1 by cable, the A1 end is realized being electrically connected with the K end steel structure spare of thyristor V2 by cable, and the A end of thyristor V2 is electrically connected by fixing realization of the crimping of steel structure spare with the K end of voltage stabilizing didoe V1.Fig. 7 is the end view that the utility model overvoltage suppresses protective device for the vertical view of the utility model overvoltage inhibition protective device, Fig. 8.Table 1 suppresses the parameter list of each parts in the protective device for the utility model overvoltage.
Table 1 parameters of operating part
| Title | Code name | Quantity (individual) | Technical parameter | |
| Thyristor (thyristor) | |
1 | 1600V-1000A | |
| Voltage stabilizing didoe | |
1 | 1600V | |
| Suppress | L1 | 1 | 500μH | |
| The decoupling | C1 | 1 | 1μF-500V |
In the main circuit of HXD2 locomotive auxiliary converter, adopt the circuit pattern conversion of DC-DC-AC to obtain, obtain stable intermediate voltage DC540V by intermediate circuit.The input signal of Drive and Control Circuit 102 suppresses card P108 from the copped wave control and the voltage of external control system, and as shown in Figure 9,6 core connectors on the Drive and Control Circuit are realized externally being connected with card P108.The connector body model is: SMS6GE4, and the plug model is: SMS6PHDH1, as shown in table 2, be socket, plug current potential definition list, wherein 2 wiring are shielding conductor.Table 3 is that Drive and Control Circuit and overvoltage suppress the circuit connecting terminals definition list.
Table 2, the current potential definition list
| Sequence number | Contact pin N ° | Input- | Remarks | |
| 1 | 1 | Power supply (+15V is right-15V) | ||
| 2 | 6 | (+15V=closes in mains switch control;-15V=opens) | ||
| 3 | 2 | Shielding conductor |
Table 3, the terminal definition list
| Sequence number | The point position | Binding post | The mode of connection |
| 1 | G | 6.3mm×0.8mm | Peg graft |
| 2 | K | 6.3mm×0.8mm | Peg graft |
| 3 | HT | 6.3mm×0.8mm | Peg graft |
Suppress protective device by in intermediate circuit, increasing overvoltage, make when middle voltage is higher than 730V, external control system receives the Drive and Control Circuit that feeds back signal to of intermediate circuit transducer and sends trigger impulse, control silicon controlled conducting degree has suppressed intermediate voltage thereby increased load; When control system lost efficacy, when voltage rises to 800V, hardware BOD circuit operation triggered the controllable silicon conducting and suppresses intermediate voltage, thereby realized the double inhibition function of intermediate voltage, finally reaches the purpose of stablizing intermediate circuit DC540V voltage.
Above-described embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is an embodiment of the present utility model; and be not used in and limit protection range of the present utility model; all within spirit of the present utility model and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. the auxiliary unsteady flow cabinet overvoltage of locomotive suppresses protective device, it is characterized in that described overvoltage suppresses protective device and comprises: overvoltage suppresses circuit and Drive and Control Circuit; Wherein,
Described overvoltage suppresses circuit and is connected with intermediate circuit, the Drive and Control Circuit of the auxiliary unsteady flow cabinet of described locomotive respectively; Described Drive and Control Circuit is connected with the external control system of the auxiliary unsteady flow cabinet of described locomotive;
Described Drive and Control Circuit receives outer triggering signal from described external control system, and described outer triggering signal drives described overvoltage and suppresses the voltage that circuit suppresses described intermediate circuit;
The intermediate circuit voltage that described Drive and Control Circuit is obtained from described intermediate circuit, judge that whether described intermediate circuit voltage is greater than setting threshold, if, then export the internal trigger signal, described internal trigger signal drives described overvoltage and suppresses the voltage that circuit suppresses described intermediate circuit.
2. overvoltage as claimed in claim 1 suppresses protective device, it is characterized in that, described overvoltage suppresses protective device and comprises: circuit carriers, described overvoltage suppresses circuit and described Drive and Control Circuit is fixed on the described circuit carriers.
3. overvoltage as claimed in claim 2 suppresses protective device, it is characterized in that, described circuit carriers comprises: mounting panel, Drive and Control Circuit plate and inhibition circuit frame, and described Drive and Control Circuit plate and described inhibition circuit frame are fixed on the described mounting panel;
Described Drive and Control Circuit plate is used to carry described Drive and Control Circuit; Described inhibition circuit frame is used to carry described overvoltage and suppresses circuit.
4. overvoltage as claimed in claim 1 suppresses protective device; it is characterized in that; described overvoltage suppresses circuit and comprises: suppress voltage component, described inhibition voltage component is connected with described intermediate circuit, is used to receive described outer triggering signal or described internal trigger signal and conducting.
5. overvoltage as claimed in claim 4 suppresses protective device, it is characterized in that described inhibition voltage component comprises thyristor.
6. overvoltage as claimed in claim 4 suppresses protective device; it is characterized in that; described overvoltage suppresses circuit and comprises: suppress reactor; described inhibition reactor is connected with described inhibition voltage component, is used for that the voltage to described intermediate circuit suppresses when described inhibition voltage component conducting.
7. overvoltage as claimed in claim 1 suppresses protective device; it is characterized in that; described Drive and Control Circuit comprises: the internal trigger circuit part, described internal trigger circuit part comprises: voltage stabilizing didoe and discharge capacity, described voltage stabilizing didoe puncture voltage is 800V.
8. overvoltage as claimed in claim 6 suppresses protective device, and it is characterized in that described inhibition circuit frame comprises: upper mounting plate (501), lower installation board (502) and middle mounting panel (503) have a plurality of installing holes (504) on described each mounting panel.
9. overvoltage as claimed in claim 8 suppresses protective device, it is characterized in that described inhibition voltage component is fixed between described upper mounting plate and the middle mounting panel.
10. overvoltage as claimed in claim 8 suppresses protective device, it is characterized in that the diameter of described installing hole is 7mm or 3.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202662082U CN201584769U (en) | 2009-11-13 | 2009-11-13 | Overvoltage suppressing and protecting device for auxiliary converter cabinet of locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202662082U CN201584769U (en) | 2009-11-13 | 2009-11-13 | Overvoltage suppressing and protecting device for auxiliary converter cabinet of locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201584769U true CN201584769U (en) | 2010-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202662082U Expired - Fee Related CN201584769U (en) | 2009-11-13 | 2009-11-13 | Overvoltage suppressing and protecting device for auxiliary converter cabinet of locomotive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201584769U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102739050A (en) * | 2012-07-11 | 2012-10-17 | 北京赛德高科铁道电气科技有限责任公司 | DC/DC (direct current) chopper circuit for auxiliary converter cabinet of electric locomotive |
| CN103660951A (en) * | 2012-09-05 | 2014-03-26 | 中国北车股份有限公司大连电力牵引研发中心 | Voltage indication device of railway vehicle and railway vehicle |
| CN103915993A (en) * | 2013-01-07 | 2014-07-09 | 永济新时速电机电器有限责任公司 | Overvoltage protection trigger circuit, overvoltage protection device and locomotive auxiliary converter |
| CN103915994A (en) * | 2013-01-07 | 2014-07-09 | 永济新时速电机电器有限责任公司 | Overvoltage protection device and locomotive auxiliary converter |
-
2009
- 2009-11-13 CN CN2009202662082U patent/CN201584769U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102739050A (en) * | 2012-07-11 | 2012-10-17 | 北京赛德高科铁道电气科技有限责任公司 | DC/DC (direct current) chopper circuit for auxiliary converter cabinet of electric locomotive |
| CN103660951A (en) * | 2012-09-05 | 2014-03-26 | 中国北车股份有限公司大连电力牵引研发中心 | Voltage indication device of railway vehicle and railway vehicle |
| CN103915993A (en) * | 2013-01-07 | 2014-07-09 | 永济新时速电机电器有限责任公司 | Overvoltage protection trigger circuit, overvoltage protection device and locomotive auxiliary converter |
| CN103915994A (en) * | 2013-01-07 | 2014-07-09 | 永济新时速电机电器有限责任公司 | Overvoltage protection device and locomotive auxiliary converter |
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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 |
Granted publication date: 20100915 Termination date: 20141113 |
|
| EXPY | Termination of patent right or utility model |