CN103475279B - A kind of brake resistor fan control method and device - Google Patents
A kind of brake resistor fan control method and device Download PDFInfo
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- CN103475279B CN103475279B CN201310404160.8A CN201310404160A CN103475279B CN 103475279 B CN103475279 B CN 103475279B CN 201310404160 A CN201310404160 A CN 201310404160A CN 103475279 B CN103475279 B CN 103475279B
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Abstract
The present invention provides a kind of brake resistor fan control method for train and device, when contactor group is placed in first, the mode of connection of blower fan and power supply is low speed mode of connection, and when contactor group is placed in the 2nd, the mode of connection of blower fan and power supply is high speed mode of connection; Described contactor group is set and is placed in first; Described method comprises: when detecting that braking resistance drops into, and arranges described contactor group and is placed in the 2nd and opening timing device; After timer reached for the first default time, described contactor group is set and is placed in first. Visible, according to input situation and the timer of braking resistance in the present invention, by arranging contactor group, it is achieved the switching of blower fan height fast mode and low-speed mode. When braking resistance and drop into so that fan operation, in high fast mode certain time, ensure that the high speed heat radiation of braking resistance, and all the other times operate in low-speed mode so that operating in high fast mode all the time compared to of the prior art, more energy-conservation, noise is less.
Description
Technical field
The present invention relates to Motor Control Field, especially relate to a kind of brake resistor fan control method and device.
Background technology
In train braking process, most of energy of generation all feeds back to electrical network system with the form regenerated, but when part energy cannot by electrical network Systemic absorption time, braking resistance will be dropped into so that this part energy by braking resistance consume. During braking these energy of resistance consumption, a large amount of heats can be produced thereupon, need in this case to brake the object of resistance blower fan high speed running to reach quick heat radiating.
At present, braking resistance blower fan of the prior art is simple fan, can only run in high speed mode. Therefore when, after train braking, braking resistance blower fan all operates in high fast mode all the time, not only not energy-conservation, and the noise produced when blower fan operates at a high speed is also bigger.
Summary of the invention
The technical problem that the present invention solves is to provide a kind of brake resistor fan control method and device, while dispelling the heat for braking resistance, it is achieved energy-conservation with the object made an uproar is fallen.
For this reason, the technical scheme of technical solution problem of the present invention is:
Present invention also offers a kind of brake resistor fan control method for train, when contactor group is placed in first, the mode of connection of described blower fan and power supply is low speed mode of connection, and when contactor group is placed in the 2nd, the mode of connection of described blower fan and power supply is high speed mode of connection; Described contactor group is set and is placed in first;
Described method comprises:
When detecting that braking resistance drops into, described contactor group is set and is placed in the 2nd and opening timing device;
After timer reached for the first default time, described contactor group is set and is placed in first.
Preferably, described setting before described contactor group is placed in the 2nd also comprises:
Judge whether braking resistance mark is the first mark, if it does, then perform described to arrange described contactor group and be placed in the 2nd;
Arrange when described contactor group is placed in the 2nd and also comprise: braking resistance is set and is designated the 2nd mark;
Arrange when described contactor group is placed in first and also comprise: braking resistance is set and is designated the first mark.
Preferably, it is initial value by set timer;
Described method also comprises:
When timer reaches described first, to preset set timer after the time be initial value;
When described train speed per hour is less than the first threshold value, judge whether described timer is initial value, if not, then described contactor group is set and is placed in first and suspends described timer;
When timer is suspended state and described train speed per hour is greater than the first threshold value, described contactor group is set and is placed in the 2nd and recovers described timer.
Preferably, described method also comprises: after described suspension of service reached for the 2nd default time, stop described blower fan.
Preferably, the described first default time was the longest heat radiation time needed for described braking resistance.
Preferably, described contactor group comprises low speed contact device, the first high speed contactor and the 2nd high speed contactor;
The three-phase output end of power supply connects W1, V1, U1 end of described blower fan respectively by three normally opened contacts of low speed contact device, the three-phase output end of described power supply also connects W2, V2, U2 end of described blower fan respectively by three normally opened contacts of the first high speed contactor, and W1, V1, U1 end of described blower fan is also connected to same end point by three normally opened contacts of the 2nd high speed contactor;
Described described contactor group is set it is placed in the 2nd and it is specially:
Export lower level to the control end of described low speed contact device, and export high level to the control end of described first high speed contactor and the 2nd high speed contactor;
Described described contactor group is set it is placed in first and it is specially:
Export high level to the control end of described low speed contact device, and export lower level to the control end of described first high speed contactor and the 2nd high speed contactor.
Preferably, export high level to the control end of described low speed contact device to be specially:
If the control end of the control end of described first high speed contactor and/or the 2nd high speed contactor be input as lower level, then to low speed contact device control end export high level;
Export high level to the control end of described first high speed contactor and the 2nd high speed contactor to be specially:
If the control end of described low speed contact device be input as lower level, then export high level to the control end of described first high speed contactor and the 2nd high speed contactor.
Preferably, low speed control signal exports the control end of low speed controller to by the normally closed contact of the normally closed contact of the first high speed contactor and/or the 2nd high speed contactor; High-speed control signal exports the control end of the first high speed contactor in parallel and the control end of the 2nd high speed contactor to by the normally closed contact of low speed contact device;
Then the described control end to described low speed contact device exports lower level, and if the control end of described low speed contact device be input as lower level, then export high level to the control end of described first high speed contactor and the 2nd high speed contactor and be specially:
Arranging described low speed control signal is lower level, and high-speed control signal is high level;
If the control end of the control end of described first high speed contactor and/or the 2nd high speed contactor be input as lower level, then export high level to the control end of described low speed contact device, and it be specially to the control end output lower level of described first high speed contactor and the 2nd high speed contactor:
Arranging low speed control signal is high level, and high-speed control signal is lower level.
Preferably, three normally opened contacts of described low speed contact device, the first high speed contactor, the 2nd high speed contactor are main contact;
Described method also comprises: by monitoring the state of the secondary contact of described low speed contact device, whether blower fan described in monitor in real time operates in low-speed mode;
And/or,
Described method also comprises: by monitoring the state of the secondary contact of described first high speed contactor and/or the 2nd high speed contactor, whether blower fan described in monitor in real time operates in high fast mode.
Present invention also offers a kind of braking resistance fan controller for train, described device comprises contactor group, control unit and timer;
When described contactor group is placed in first, the mode of connection of described blower fan and power supply is low speed mode of connection, and when contactor group is placed in the 2nd, the mode of connection of described blower fan and power supply is high speed mode of connection;
Described control unit is placed in first for setting described contactor group, when detecting that braking resistance drops into, described contactor group is set and is placed in the 2nd and opening timing device, after timer reached for the first default time, described contactor group is set and is placed in first.
Preferably, described contactor group comprises low speed contact device, the first high speed contactor and the 2nd high speed contactor;
The three-phase output end of power supply connects W1, V1, U1 end of described blower fan respectively by three normally opened contacts of described low speed contact device, the three-phase output end of described power supply also connects W2, V2, U2 end of described blower fan respectively by three normally opened contacts of the first high speed contactor, and W1, V1, U1 end of described blower fan is also connected to same end point by three normally opened contacts of the 2nd high speed contactor;
Described control unit is placed in first for setting described contactor group and is specially:
Described control unit is used for exporting high level to the control end of described low speed contact device, and exports lower level to the control end of described first high speed contactor and the 2nd high speed contactor;
Described control unit is placed in the 2nd for setting described contactor group and is specially:
Described control unit is used for exporting lower level to the control end of described low speed contact device, and exports high level to the control end of described first high speed contactor and the 2nd high speed contactor.
Preferably, low speed control signal exports the control end of low speed controller to by the normally closed contact of the normally closed contact of the first high speed contactor and/or the 2nd high speed contactor; High-speed control signal exports the control end of the first high speed contactor in parallel and the control end of the 2nd high speed contactor to by the normally closed contact of low speed contact device;
Then described control unit is used for exporting lower level to the control end of described low speed contact device, and is specially to the control end output high level of described first high speed contactor and the 2nd high speed contactor:
Described control unit is for exporting low level low speed control signal, and exports the high-speed control signal of high level;
Described control unit is used for exporting high level to the control end of described low speed contact device, and is specially to the control end output lower level of described first high speed contactor and the 2nd high speed contactor:
Described control unit is for exporting the low speed control signal of high level, and exports low level high-speed control signal.
Preferably, three normally opened contacts of described low speed contact device, the first high speed contactor, the 2nd high speed contactor are main contact;
Described control unit is also for the state of the secondary contact by the described low speed contact device of monitoring, and whether blower fan described in monitor in real time operates in low-speed mode;
And/or,
Described control unit is also for the state of the secondary contact by the described first high speed contactor of monitoring and/or the 2nd high speed contactor, and whether blower fan described in monitor in real time operates in high fast mode.
By technique scheme, the present invention gives tacit consent to contactor group and is placed in first, now the mode of connection of described blower fan and power supply is low speed mode of connection, therefore described fan operation is at low-speed mode, when having detected that braking resistance drops into, contactor group is set and is placed in the 2nd, now the mode of connection of blower fan and power supply is high speed mode of connection, therefore described fan operation is at high fast mode, and simultaneously opening timing device, after timer ran for the first default time, again it is placed in first makes described fan operation at low-speed mode by arranging contactor group. visible, the present invention no longer adopts simple fan of the prior art, but according to braking input situation and the timer of resistance, by arranging contactor group, realize the different connections of described blower fan from powering mode, thus realize the switching of described blower fan height fast mode and low-speed mode. wherein, when braking resistance and drop into so that described fan operation is in high fast mode certain time, ensure that the high speed heat radiation of braking resistance, all the other times operate in low-speed mode so that operate in high fast mode all the time compared to of the prior art, more energy-conservation, noise is also less.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the first embodiment of the brake resistor fan control method for train provided by the invention;
Fig. 2 is the schematic flow sheet of the 2nd embodiment of the brake resistor fan control method for train provided by the invention;
Fig. 3 is the connection structure iron of the blower fan in the embodiment shown in Fig. 2 and power supply;
Fig. 4 is the schematic flow sheet of the 3rd embodiment of the brake resistor fan control method for train provided by the invention;
Fig. 5 is the connection diagram of the control end of the contactor in the embodiment shown in Fig. 4;
Fig. 6 is the schematic flow sheet of the 4th embodiment of the brake resistor fan control method for train provided by the invention;
Fig. 7 is the schematic flow sheet of the 5th embodiment of the brake resistor fan control method for train provided by the invention;
Fig. 8 is the structural representation of the embodiment of the braking resistance fan controller for train provided by the invention.
Embodiment
Braking resistance blower fan of the prior art is simple fan, can only run in high speed mode. Therefore when, after train braking, braking resistance blower fan all operates in high fast mode all the time, not only not energy-conservation, and the noise produced when blower fan operates at a high speed is also bigger.
And in embodiments of the present invention, it provides a kind of brake resistor fan control method for train and device, it is possible to while dispelling the heat for braking resistance, it is achieved energy-conservation and fall the object made an uproar.
For enabling above-mentioned purpose, the feature and advantage of the present invention more become apparent, below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
Referring to Fig. 1, the present invention provides the first embodiment of the brake resistor fan control method for train. In the present embodiment, when contactor group is placed in first, the mode of connection of described blower fan and power supply is low speed mode of connection, and when contactor group is placed in the 2nd, the mode of connection of described blower fan and power supply is high speed mode of connection. It may be seen that by arranging contactor group, it is possible to change the mode of connection of described blower fan and power supply, thus realize the switching of described blower fan height fast mode and low-speed mode.
Described contactor group is set and is placed in first. That is, the contactor group acquiescence in the present embodiment is placed in first, and therefore, the mode of connection of blower fan and power supply is defaulted as low speed mode of connection, and therefore described blower fan acquiescence operates at low-speed mode. , it is possible to be when launch train, here described contactor group is set and is placed in first.
In the present embodiment, described method comprises:
S101: when detecting that braking resistance drops into, arranges described contactor group and is placed in the 2nd and opening timing device.
In train braking process, most of energy of generation all feeds back to electrical network system with the form regenerated, but when part energy cannot by electrical network Systemic absorption time, now can drop into braking resistance so that this part energy by braking resistance consume. After dropping into braking resistance, a large amount of heats can be produced, now need the running at a high speed of braking resistance blower fan, it is achieved to the quick heat radiating of braking resistance. Therefore, in this step, when detected braking resistance drop into time, contactor group is placed in the 2nd so that the mode of connection of blower fan and power supply is high speed mode of connection, therefore now fan operation at high fast mode.
S102: after timer reached for the first default time, described contactor group is set and is placed in first.
Preset after the time when timer reaches first, be also exactly described fan operation after high fast mode certain time, contactor group is placed in first again, now recovers low-speed mode.
Here, first preset the time can the longest heat radiation time for described braking resistance needed for, thus ensure that braking resistance can drop to enough low temperature, ensure to brake the security of resistance. Specifically, it is possible to measure in the high speed heat radiation time needed for each operating mode, using the wherein the longest time as the longest heat radiation time needed for braking resistance. The high speed heat radiation time of each operating mode can calculate according to electric braking emulation experiment.
By technique scheme, the present embodiment is given tacit consent to contactor group and is placed in first, now the mode of connection of described blower fan and power supply is low speed mode of connection, therefore described fan operation is at low-speed mode, when having detected that braking resistance drops into, contactor group is set and is placed in the 2nd, now the mode of connection of blower fan and power supply is high speed mode of connection, therefore described fan operation is at high fast mode, and simultaneously opening timing device, after timer ran for the first default time, again it is placed in first makes described fan operation at low-speed mode by arranging contactor group. visible, the present embodiment no longer adopts simple fan of the prior art, but according to braking input situation and the timer of resistance, by arranging contactor group, realize the different connections of described blower fan from powering mode, thus realize the switching of described blower fan height fast mode and low-speed mode. wherein, when braking resistance and drop into so that described fan operation is in high fast mode certain time, ensure that the high speed heat radiation of braking resistance, all the other times operate in low-speed mode so that operate in high fast mode all the time compared to of the prior art, more energy-conservation, noise is also less.
It should be noted that, in the present embodiment, the executive agent of step S101 and S102 can be control unit, such as, it is possible to be that micro-chip, ARM, FPGA etc. control chip, wherein, it is possible to be the control unit in towing tank, it is also possible to be the new control unit arranged.
Preferably, described method also comprises: whether the temperature monitoring described braking resistance exceedes preset temp threshold value, if it does, then report to the police. Supervisory signal specifically can be sent to towing tank (being also exactly the control unit in towing tank) by the monitoring device of braking resistance itself by this step.
Preferably, described method also comprises: whether the blast monitoring described braking resistance blower fan exceeds default blast scope, if it does, then report to the police, now illustrates that blower fan running is abnormal. Supervisory signal specifically can be sent to towing tank by the monitoring device of braking resistance itself by this step.
By arranging contactor group in the present invention, change the mode of connection that braking resistance blower fan is different from power supply such that it is able to realize the switching of described blower fan height fast mode and low-speed mode. Such as, some brakes resistance blower fan, and when the connection with power supply is Y-system, blower fan operates at high fast mode; When the connection with power supply is trilateral connection, blower fan operates at low-speed mode. Therefore, can by arranging contactor group in the present invention so that the connection of blower fan and power supply switches in trilateral connection and Y-system, so that blower fan switches between low-speed mode and high fast mode. It is described below by an embodiment.
Refer to Fig. 2, present invention also offers the 2nd embodiment of the brake resistor fan control method for train. In the present embodiment, contactor group comprises low speed contact device, the first high speed contactor and the 2nd high speed contactor. As shown in Figure 3, low speed contact utensil has control end and three normally opened contact 301, first high speed contactors to have control end and three normally opened contact the 302, two high speed contactors have control end and three normally opened contacts 303. For these three contactors, when the control end input high level of contactor, three normally opened contacts close, and when control end input low level, three normally opened contacts disconnect.
The three-phase output end of power supply connects W1, V1, U1 end of braking resistance blower fan M respectively by three normally opened contacts 301 of low speed contact device, the three-phase output end of described power supply also connects W2, V2, U2 end of described blower fan respectively by three normally opened contacts of the first high speed contactor 302, and W1, V1, U1 end of described blower fan M is also connected to same end point by three normally opened contacts of the 2nd high speed contactor 303. Need to be connected between power supply and blower fan M due to above-mentioned contact, therefore can for the main contact of big current can be used for.
Default setting is, exports high level to the control end of described low speed contact device, and exports lower level to the control end of described first high speed contactor and the 2nd high speed contactor. Now three normally opened contacts 301 of low speed contact device close, three normally opened contacts 302 of the first high speed contactor and three normally opened contacts 303 of the 2nd high speed contactor disconnect, now, the mode of connection of this blower fan and power supply is trilateral connection, and this fan operation is at low-speed mode.
In the present embodiment, described method comprises:
S201: when detecting that braking resistance drops into, export lower level to the control end of described low speed contact device, and export high level to the control end of described first high speed contactor and the 2nd high speed contactor, and opening timing device.
Here can be specifically perform this step by towing tank. When exporting lower level to the control end of low speed contact device, and when exporting high level to the control end of the first high speed contactor and the 2nd high speed contactor, three normally opened contacts 301 of low speed contact device disconnect, three normally opened contacts 302 of the first high speed contactor and three normally opened contacts 303 of the 2nd high speed contactor close, now, the mode of connection of this blower fan and power supply is Y-system, and this fan operation is at high fast mode.
S202: after timer reached for the first default time, export high level to the control end of described low speed contact device, and export lower level to the control end of described first high speed contactor and the 2nd high speed contactor.
After timer reached for the first default time, also it is exactly after described blower fan operates at high fast mode certain time, high level is exported to the control end of described low speed contact device, and export lower level to the control end of described first high speed contactor and the 2nd high speed contactor, now the mode of connection of blower fan and power supply is trilateral connection, and blower fan recovers low-speed mode.
Visible, the present embodiment no longer adopts simple fan of the prior art, but according to braking input situation and the timer of resistance, by inputing to the level height of the control end of low speed contact device, the first high speed contactor and the 2nd high speed contactor, realize trilateral connection or the Y-system of described blower fan and powering mode, thus realize the switching of described blower fan height fast mode and low-speed mode. Wherein, when braking resistance and drop into so that described fan operation is in high fast mode certain time, ensure that the high speed heat radiation of braking resistance, all the other times operate in low-speed mode so that operate in high fast mode all the time compared to of the prior art, more energy-conservation, noise is also less.
In the present embodiment, at the common node of low speed contact device and the first high speed contactor, and three normally opened contacts of the insurance contactor of braking resistance blower fan and/or three normally opened contacts of the switch contact of braking resistance blower fan between power supply, can also be provided with. Above-mentioned three normally opened contacts are the main contact for big current. Wherein, switch contact is that control braking resistance blower fan is powered the trip switch of break-make. The effect of insurance contactor is for load (blower fan) provides protection, prevents the situations such as overcurrent to burning that blower fan may produce.
In the present embodiment, described normally opened contact is main contact, in fact, low speed contact device, the first high speed contactor and the 2nd high speed contactor three normally opened contacts except comprising in main contact, the secondary contact for small area analysis can also be comprised, by detecting the state of secondary contact, it is possible to the state of monitor in real time blower fan. Specifically, described method also comprises: by monitoring the state of the secondary contact of described low speed contact device, whether blower fan described in monitor in real time operates in low-speed mode; And/or, by monitoring the state of the secondary contact of described first high speed contactor and/or the 2nd high speed contactor, whether blower fan described in monitor in real time operates in high fast mode. That is, it is possible to monitor whether blower fan operates in high fast mode, or can monitor whether blower fan operates in low-speed mode, or monitor whether blower fan operates in high fast mode and monitor whether blower fan operates in low-speed mode simultaneously. If the operational mode monitoring out blower fan is not identical with the current pattern arranged, it is possible to carries out alarm operation or stops described blower fan or the operational mode of blower fan again arranged.
Illustrate above-mentioned monitor mode below: if the state of the secondary contact of monitoring low speed contact device, when these secondary contact are normally opened contact, when this normally opened contact disconnects, represent that described blower fan does not operate in low-speed mode, when this normally opened contact closes, represent that described fan operation is at low-speed mode; When these secondary contact are normally closed contact, when this normally closed contact disconnects, represent that described fan operation is at low-speed mode, when this normally closed contact closes, represent that described blower fan does not operate in low-speed mode. If the state of the secondary contact of monitoring first and/or the 2nd high speed contactor, when these secondary contact are normally opened contact, when this normally opened contact disconnects, represent that described blower fan does not operate in high fast mode, when this normally opened contact closes, represent that described fan operation is at high fast mode; When these secondary contact are normally closed contact, when this normally closed contact disconnects, represent that described fan operation is at high fast mode, when this normally closed contact closes, represent that described blower fan does not operate in high fast mode.
In the present embodiment, the different connections of blower fan and power supply are achieved by low speed contact device, the first high speed contactor and the 2nd high speed contactor. In actual applications, for the consideration of security, low speed contact device and any one high speed contactor can not be connected simultaneously. Therefore, in the present embodiment, the described control end to described low speed contact device export high level can be specially: if the control end of the control end of described first high speed contactor and/or the 2nd high speed contactor be input as lower level, then to low speed contact device control end export high level. That is, only when determine the first high speed contactor control end input be lower level, or the control end input of the 2nd high speed contactor is lower level, or the control end input of the first high speed contactor and the 2nd high speed contactor is all lower level, just exports high level with three normally opened contacts of closed low speed contact device to the control end of low speed contact device. Wherein, because the level state that the first high speed contactor in the present invention inputs with the control end of the 2nd high speed contactor remains consistent, therefore can only judge one of them high speed contactor control end input for lower level, so that it may be lower level with what determine the control end of two high speed contactors and input. Equally, described export high level to the control end of described first high speed contactor and the 2nd high speed contactor and be specially: if the control end of described low speed contact device be input as lower level, then control end to described first high speed contactor and the 2nd high speed contactor exports high level. Below by an embodiment, illustrate and a kind of can realize low speed contact device and mode that any one high speed contactor can not be connected simultaneously.
Refer to Fig. 4, present invention also offers the 3rd embodiment of the brake resistor fan control method for train. In the present embodiment, contactor group comprises low speed contact device, the first high speed contactor and the 2nd high speed contactor. As shown in Figure 3, low speed contact utensil has three normally opened contacts 301, first high speed contactor to have three normally opened contacts the 302, two high speed contactor and has three normally opened contacts 303. As shown in Figure 5, low speed contact device also has control end 504 and normally closed contact K1, and the first high speed contactor also has control end 502 and normally closed contact K2, and the 2nd high speed contactor also has control end 503 and normally closed contact K3. Wherein, above-mentioned three normally closed contacts can be the secondary contact for small area analysis.
As shown in Figure 3, the three-phase output end of power supply connects W1, V1, U1 end of braking resistance blower fan M respectively by three normally opened contacts 301 of low speed contact device, the three-phase output end of described power supply also connects W2, V2, U2 end of described blower fan respectively by three normally opened contacts of the first high speed contactor 302, and W1, V1, U1 end of described blower fan M is also connected to same end point by three normally opened contacts of the 2nd high speed contactor 303. Need to be connected between power supply and blower fan M due to above-mentioned contact, therefore can for the main contact of big current can be used for.
As shown in Figure 5, low speed control signal exports the control end 504 of low speed controller to by the normally closed contact K2 of the first high speed contactor and the normally closed contact K3 of the 2nd high speed contactor of series connection; High-speed control signal exports the control end 502 of the first high speed contactor in parallel and the control end 503 of the 2nd high speed contactor to by the normally closed contact K1 of low speed contact device. In Figure 5, low speed control signal and high-speed control signal are all exported by two ports of towing tank 501, and in fact, above-mentioned two control signals can also be exported by other control unit. Wherein, the level state inputted due to the first high speed contactor in the present invention and the control end of the 2nd high speed contactor remains consistent, therefore, in the present embodiment, low speed control signal only can also export the control end 504 of low speed controller to by the normally closed contact K3 of the normally closed contact K2 of the first high speed contactor or the 2nd high speed contactor.
In the present embodiment, low speed control signal exports the control end 504 of low speed contact device to by the normally closed contact K3 of the normally closed contact K2 of the first high speed contactor and the 2nd high speed contactor, therefore, when low speed control signal is high level, only when normally closed contact K2 and normally closed contact K3 is all closed, the control end 504 of low speed contact device just can receive high level. And only when the control end 502 of the first high speed contactor is input as lower level, normally closed contact K2 is just closed, only when the control end 503 of the 2nd high speed contactor is input as lower level, normally closed contact K3 is just closed. Therefore, when ensure that the control end of the first high speed contactor and the 2nd high speed contactor is lower level, the control end of low speed contact device just likely receives high level. Equally, exported to the control end 502 of the first high speed contactor in parallel and the control end 503 of the 2nd high speed contactor by the normally closed contact K1 of low speed contact device due to high-speed control signal, therefore, when ensure that the control end of low speed contact device is lower level, the control end of the first high speed contactor and the 2nd high speed contactor just likely receives high level.
Default setting is, described low speed control signal is high level, and high-speed control signal is lower level. Now, when the input of the control end 502 of the first high speed contactor and the control end 503 of the 2nd high speed contactor is lower level, the control end 504 of low speed contact device is input as high level. Therefore, three normally opened contacts 301 of low speed contact device close, and three normally opened contacts 302 of the first high speed contactor and three normally opened contacts 303 of the 2nd high speed contactor disconnect, now, the mode of connection of this blower fan and power supply is trilateral connection, and this fan operation is at low-speed mode.
In the present embodiment, described method comprises:
S401: when detecting that braking resistance drops into, arranging described low speed control signal is lower level, and high-speed control signal is high level, and opening timing device.
Now, when the control end 504 of low speed contact device is lower level, the input of the control end 502 of the first high speed contactor and the control end 503 of the 2nd high speed contactor is high level, and the control end of low speed contact device be input as lower level. Therefore, three normally opened contacts 301 of low speed contact device disconnect, and three normally opened contacts 302 of the first high speed contactor and three normally opened contacts 303 of the 2nd high speed contactor close, now, the mode of connection of this blower fan and power supply is Y-system, and this fan operation is at high fast mode.
S402: after timer reached for the first default time, arranging described low speed control signal is high level, and high-speed control signal is lower level.
After timer reached for the first default time, also it is exactly after described blower fan operates at high fast mode certain time, high level is exported to the control end of described low speed contact device, and export lower level to the control end of described first high speed contactor and the 2nd high speed contactor, now the mode of connection of blower fan and power supply is trilateral connection, and blower fan recovers low-speed mode.
Visible, in the present embodiment, low speed control signal exports the control end 504 of low speed contact device to by the normally closed contact K3 of the normally closed contact K2 of the first high speed contactor and the 2nd high speed contactor, what ensure that the control end input only working as the first high speed contactor and the 2nd high speed contactor is lower level, also it is exactly that normally opened contact 302 and normally opened contact 303 are when disconnecting, low speed control signal just can export the control end 504 of low speed contact device to, and this control end 504 just likely can receive high level. And, high-speed control signal exports the control end 502 of the first high speed contactor in parallel and the control end 503 of the 2nd high speed contactor to by the normally closed contact K1 of low speed contact device, when ensure that normally opened contact 301 disconnects, high-speed control signal just can export the control end 502 of the first high speed contactor and the control end 503 of the 2nd high speed contactor to, and this control end 502 and control end 503 just likely can receive high level. So that normally opened contact 301 can not the simultaneously closed or disconnection with normally opened contact 302 (or normally opened contact 303).
, it is also possible to pass through, as shown in Figure 5, in the present embodiment the normally opened contact K5 in the secondary contact of the first high speed contactor, and the normally opened contact K6 in the secondary contact of the 2nd high speed contactor, the high speed running status of monitoring blower fan. Specifically, high level confession electric wire (i.e. confession electric wire H in Fig. 5) exports a port of towing tank 501 to by the normally opened contact K5 and normally opened contact K6 of series connection, described method also comprises: if what judge to receive in this port is high level, illustrate that normally opened contact K5 and normally opened contact K6 is all closed, then now described fan operation at high fast mode, if judge this port receives as lower level, then now described blower fan does not operate in high fast mode.
In the present embodiment, it is also possible to pass through, the normally opened contact K4 in the secondary contact of low speed contact device, the low cruise state of monitoring blower fan. Specifically, high level exports another port of towing tank 501 to for electric wire by normally opened contact K4, described method also comprises: if what judge that this port receives is high level, illustrate that normally opened contact K4 closes, then now described fan operation at low-speed mode, if judge that this port receives as lower level, then now described blower fan does not operate in low-speed mode.
Here, normally opened contact K4, normally opened contact K5 and normally opened contact K6 are secondary contact, and normally opened contact 301 in Fig. 3, normally opened contact 302 and normally opened contact 303 are main contact, refer to different contacts.
In the present embodiment, high level can also export a port of towing tank 501 to by the normally opened contact K8 in the secondary contact of the normally opened contact K7 in the secondary contact insuring contactor and switch contact for electric wire, when judge that this port receives for high level time, three normally opened contacts then now insured in contactor and switch contact main contact are closed state, and that is bright now blower fan is opened condition. Towing tank 501 can also connect power at very low levels line (i.e. confession electric wire L in Fig. 5) by the control end 505 of switch contact, when towing tank 501 judges that three normally opened contacts insured in contactor and switch contact main contact are closed state, export the control end 505 of high level to switch contact.
In the present embodiment, braking resistance box 506 can also connect towing tank 501 by two signal wires, the temperature of braking resistance box 506 Real-Time Monitoring braking resistance, when the temperature braking resistance exceedes preset temp threshold value, high level is exported so that towing tank 501 carries out temperature alarming by wherein signal wire. The blast of braking resistance box 506 Real-Time Monitoring braking resistance blower fan, when the blast braking resistance blower fan exceeds default blast scope, exports high level by another root signal wire so that towing tank 501 carries out wind pressure alarm.
, acquiescence brakes resistance fan operation at low-speed mode by above-described embodiment it will be seen that in the present invention, when having detected that braking resistance drops into so that fan operation, after high fast mode for some time, recovers as low-speed mode. In this course, when fan operation is when high fast mode, if when having detected that again braking resistance drops into, it is possible to by arranging the mode of mark so that now do not do any operation. It is illustrated below by an embodiment.
Refer to Fig. 6, present invention also offers the 4th embodiment of the brake resistor fan control method for train. In the present embodiment, when contactor group is placed in first, the mode of connection of described blower fan and power supply is low speed mode of connection, and when contactor group is placed in the 2nd, the mode of connection of described blower fan and power supply is high speed mode of connection. In the present embodiment, contactor group can be identical with the embodiment shown in Fig. 2 and Fig. 4, comprises low speed contact device, and the first high speed contactor and the 2nd high speed contactor, relevant part refers to the embodiment shown in Fig. 2 and Fig. 4, repeats no more here.
Described contactor group is set and is placed in first, and braking resistance is set and is designated the first mark.
In the present embodiment, described method comprises:
S601: when detecting that braking resistance drops into, judges whether braking resistance mark is the first mark, if it does, then perform S602. If not, then illustrate that now blower fan has operated in high fast mode, it is possible to do not carry out any operation, and process ends.
S602: arrange described contactor group and be placed in the 2nd, arranges braking resistance and is designated the 2nd mark. And opening timing device.
Now, braking resistance mark is the first mark, illustrates that contactor group is placed in first, is also exactly that fan operation is at low-speed mode. If braking resistance mark is not the first mark, then fan operation is at high fast mode, then without the need to performing S602.
S603: after timer reached for the first default time, described contactor group is set and is placed in first, and braking resistance is set and is designated the first mark. After timer reached for the first default time, also it is exactly, after described blower fan operates at high fast mode certain time, contactor group is placed in first again, now recovers low-speed mode. Braking resistance mark is set to the first mark simultaneously, when again having detected that braking resistance drops into afterwards, re-executes S601 to S603.
Visible, in the present embodiment, by arranging braking resistance mark so that only when fan operation is when low-speed mode, just by detecting that braking resistance drops into and switch to high fast mode.
The present invention's also noise decrease when train dwelling further, is illustrated below by an embodiment.
Refer to Fig. 7, present invention also offers the 5th embodiment of the brake resistor fan control method for train, in the present embodiment, when contactor group is placed in first, the mode of connection of described blower fan and power supply is low speed mode of connection, when contactor group is placed in the 2nd, the mode of connection of described blower fan and power supply is high speed mode of connection. In the present embodiment, contactor group can be identical with the embodiment shown in Fig. 2 and Fig. 4, comprises low speed contact device, and the first high speed contactor and the 2nd high speed contactor, relevant part refers to the embodiment shown in Fig. 2 and Fig. 4, repeats no more here.
Arranging described contactor group and be placed in first, and be initial value by set timer, such as, timer is initially 0.
In the present embodiment, described method comprises:
S701: when detecting that braking resistance drops into, arranges described contactor group and is placed in the 2nd and opening timing device.
S702: after timer reached for the first default time, described contactor group is set and is placed in first.
S703: to preset set timer after the time be initial value when timer reaches described first, such as, be 0.
Described method also comprises:
S704: when described train speed per hour is less than the first threshold value, judges whether described timer is initial value, if not, then arranges described contactor group and is placed in first and suspends described timer.
If train speed per hour is less than the first threshold value, such as can arrange the first threshold value is 2km/h, then illustrate that now train is in when entering the station. If now timer is not initial value, then illustrates that blower fan is in high fast mode and timer did not also arrive for the first default time, therefore contactor group is placed in first and makes blower fan be in low-speed mode, thus noise decrease.
S705: when described timer is suspended state, and when described train speed per hour is greater than the first threshold value, arranges described contactor group and is placed in the 2nd and recovers described timer.
When timer is suspended state, illustrating that now timer is not original state, and also do not arrive first and preset the time, therefore described blower fan has switched to low-speed mode by step S704. When being now greater than the first threshold value by train speed per hour, illustrate that train sets off, therefore contactor group is placed in the 2nd so that PAU+FCU system becomes high fast mode, recovers timer simultaneously.
It should be noted that, step S704 in the present embodiment and step S705, with the execution of step S701 to step S703 order not circumscribed.
Visible, in the present embodiment, when train speed per hour is less than the first threshold value, also it is exactly that train is about to enter the station, time, PAU+FCU system is become low-speed mode, thus noise decrease, and pause timer simultaneously. After train speed per hour is greater than the first threshold value, also it is exactly after train sets off, then PAU+FCU system is become high fast mode, and recover timer so that after timer reached for the first default time, then PAU+FCU system is become low-speed mode.
In the present embodiment, if train is thoroughly out of service, it is possible to stop blower fan. Specifically, described method also comprises: after described suspension of service reached for the 2nd default time, stop described blower fan.
Wherein, suspension of service reach the 2nd preset the time represent that train is thoroughly out of service.
Referring to Fig. 8, present invention also offers the specific embodiment of the braking resistance fan controller for train, described device comprises contactor group 801, control unit 802 and timer 803.
When described contactor group 801 is placed in first, braking resistance blower fan 804 is low speed mode of connection with the mode of connection of power supply 805, and when contactor group 801 is placed in the 2nd, described blower fan 804 is high speed mode of connection with the mode of connection of power supply 805. It may be seen that by arranging contactor group, it is possible to change the mode of connection of described blower fan and power supply, thus realize the switching of described blower fan height fast mode and low-speed mode.
Control unit 802 is placed in first for setting described contactor group 801, when detecting that braking resistance drops into, described contactor group 801 is set and is placed in the 2nd and opening timing device 803, after timer 803 reached for the first default time, described contactor group 801 is set and is placed in first.
Here, first preset the time can the longest heat radiation time for described braking resistance needed for, thus ensure that braking resistance can drop to enough low problem, ensure to brake the security of resistance.
Control unit can be that micro-chip, ARM, FPGA etc. control chip, wherein, it is possible to be the control unit in towing tank, it is also possible to is the new control unit arranged.
Visible, the present embodiment no longer adopts simple fan of the prior art, but according to braking input situation and the timer of resistance, by control unit, contactor group is set, realize the different connections of described blower fan from powering mode, thus realize the switching of described blower fan height fast mode and low-speed mode. Wherein, when braking resistance and drop into so that described fan operation is in high fast mode certain time, ensure that the high speed heat radiation of braking resistance, all the other times operate in low-speed mode so that operate in high fast mode all the time compared to of the prior art, more energy-conservation, noise is also less.
Preferably, whether the temperature that control unit can also be used for monitoring described braking resistance exceedes preset temp threshold value, if it does, then report to the police. Whether the blast that control unit can also be used for monitoring described braking resistance blower fan exceeds default blast scope, if it does, then report to the police, now illustrates that blower fan running is abnormal.
Preferably, described contactor group 801 comprises low speed contact device, the first high speed contactor and the 2nd high speed contactor. As shown in Figure 3, low speed contact utensil has control end and three normally opened contact 301, first high speed contactors to have control end and three normally opened contact the 302, two high speed contactors have control end and three normally opened contacts 303. For these three contactors, when the control end input high level of contactor, three normally opened contacts close, and when control end input low level, three normally opened contacts disconnect.
The three-phase output end of power supply connects W1, V1, U1 end of braking resistance blower fan M respectively by three normally opened contacts 301 of low speed contact device, the three-phase output end of described power supply also connects W2, V2, U2 end of described blower fan respectively by three normally opened contacts of the first high speed contactor 302, and W1, V1, U1 end of described blower fan M is also connected to same end point by three normally opened contacts of the 2nd high speed contactor 303. Need to be connected between power supply and blower fan M due to above-mentioned contact, therefore for the main contact of big current can be used for.
Then described control unit 802 is placed in first for setting described contactor group and is specially: described control unit 802 is for exporting high level to the control end of described low speed contact device, and exports lower level to the control end of described first high speed contactor and the 2nd high speed contactor.
Then described control unit 802 is placed in the 2nd for setting described contactor group and is specially: described control unit 802 is for exporting lower level to the control end of described low speed contact device, and exports high level to the control end of described first high speed contactor and the 2nd high speed contactor.
Preferably, described control unit 802 can also be used for the state of the secondary contact by monitoring described low speed contact device, whether blower fan described in monitor in real time operates in low-speed mode, and/or, control unit 802 can also be used for the state of the secondary contact by monitoring described first high speed contactor and/or the 2nd high speed contactor, and whether blower fan described in monitor in real time operates in high fast mode.
Such as, three normally opened contacts of described low speed contact device, the first high speed contactor, the 2nd high speed contactor are main contact. Described control unit is also for the state of the normally opened contact in the secondary contact monitoring described low speed contact device, if being closed, then described fan operation is at low-speed mode, if be off, then described blower fan does not operate in low-speed mode. Again such as, described control unit is also for the state of the normally opened contact in the secondary contact of the described high speed contactor described at least one of: monitoring, if being closed, then described fan operation is at high fast mode, if be off, then described blower fan does not operate in as high fast mode.
In actual applications, for the consideration of security, low speed contact device and any one high speed contactor can not be connected simultaneously. Preferably, low speed control signal exports the control end of low speed controller to by the normally closed contact of the normally closed contact of the first high speed contactor and/or the 2nd high speed contactor; High-speed control signal exports the control end of the first high speed contactor in parallel and the control end of the 2nd high speed contactor to by the normally closed contact of low speed contact device.
Then described control unit 802 is for exporting lower level to the control end of described low speed contact device, and be specially to the control end output high level of described first high speed contactor and the 2nd high speed contactor: described control unit 802 is for exporting low level low speed control signal, and exports the high-speed control signal of high level.
Then described control unit 802 is for exporting high level to the control end of described low speed contact device, and be specially to the control end output lower level of described first high speed contactor and the 2nd high speed contactor: described control unit 802 is for exporting the low speed control signal of high level, and exports low level high-speed control signal.
The above is only the preferred embodiment of the present invention; it is noted that for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (12)
1. the brake resistor fan control method for train, it is characterized in that, when contactor group is placed in first, the mode of connection of described blower fan and power supply is low speed mode of connection, when contactor group is placed in the 2nd, the mode of connection of described blower fan and power supply is high speed mode of connection; Arrange described contactor group be placed in first and arrange braking resistance be designated the first mark;
Described method comprises:
When detecting that braking resistance drops into, described contactor group is set and is placed in the 2nd, braking resistance is set and is designated the 2nd mark and opening timing device;
Preset after the time when timer reaches first, described contactor group is set and is placed in first and braking resistance is set and is designated the first mark;
Described setting before described contactor group is placed in the 2nd also comprises:
Judge whether braking resistance mark is the first mark, if it does, then perform described to arrange described contactor group and be placed in the 2nd.
2. method according to claim 1, it is characterised in that, it is initial value by set timer;
Described method also comprises:
When timer reaches described first, to preset set timer after the time be initial value;
When described train speed per hour is less than the first threshold value, judge whether described timer is initial value, if not, then described contactor group is set and is placed in first and suspends described timer;
When timer is suspended state and described train speed per hour is greater than the first threshold value, described contactor group is set and is placed in the 2nd and recovers described timer.
3. method according to claim 1, it is characterised in that, described method also comprises: after described suspension of service reached for the 2nd default time, stop described blower fan.
4. method according to claim 1, it is characterised in that, the described first default time was the longest heat radiation time needed for described braking resistance.
5. method according to claim 1, it is characterised in that, described contactor group comprises low speed contact device, the first high speed contactor and the 2nd high speed contactor;
The three-phase output end of power supply connects W1, V1, U1 end of described blower fan respectively by three normally opened contacts of low speed contact device, the three-phase output end of described power supply also connects W2, V2, U2 end of described blower fan respectively by three normally opened contacts of the first high speed contactor, and W1, V1, U1 end of described blower fan is also connected to same end point by three normally opened contacts of the 2nd high speed contactor;
Described described contactor group is set it is placed in the 2nd and it is specially:
Export lower level to the control end of described low speed contact device, and export high level to the control end of described first high speed contactor and the 2nd high speed contactor;
Described described contactor group is set it is placed in first and it is specially:
Export high level to the control end of described low speed contact device, and export lower level to the control end of described first high speed contactor and the 2nd high speed contactor.
6. method according to claim 5, it is characterised in that, export high level to the control end of described low speed contact device and it is specially:
If the control end of the control end of described first high speed contactor and/or the 2nd high speed contactor be input as lower level, then to low speed contact device control end export high level;
Export high level to the control end of described first high speed contactor and the 2nd high speed contactor to be specially:
If the control end of described low speed contact device be input as lower level, then export high level to the control end of described first high speed contactor and the 2nd high speed contactor.
7. method according to claim 6, it is characterised in that, low speed control signal exports the control end of low speed controller to by the normally closed contact of the normally closed contact of the first high speed contactor and/or the 2nd high speed contactor; High-speed control signal exports the control end of the first high speed contactor in parallel and the control end of the 2nd high speed contactor to by the normally closed contact of low speed contact device;
Then the described control end to described low speed contact device exports lower level, and if the control end of described low speed contact device be input as lower level, then export high level to the control end of described first high speed contactor and the 2nd high speed contactor and be specially:
Arranging described low speed control signal is lower level, and high-speed control signal is high level;
If the control end of the control end of described first high speed contactor and/or the 2nd high speed contactor be input as lower level, then export high level to the control end of described low speed contact device, and it be specially to the control end output lower level of described first high speed contactor and the 2nd high speed contactor:
Arranging low speed control signal is high level, and high-speed control signal is lower level.
8. method according to claim 5, it is characterised in that, three normally opened contacts of described low speed contact device, the first high speed contactor, the 2nd high speed contactor are main contact;
Described method also comprises: by monitoring the state of the secondary contact of described low speed contact device, whether blower fan described in monitor in real time operates in low-speed mode;
And/or,
Described method also comprises: by monitoring the state of the secondary contact of described first high speed contactor and/or the 2nd high speed contactor, whether blower fan described in monitor in real time operates in high fast mode.
9. the braking resistance fan controller for train, it is characterised in that, described device comprises contactor group, control unit and timer;
When described contactor group is placed in first, the mode of connection of described blower fan and power supply is low speed mode of connection, and when contactor group is placed in the 2nd, the mode of connection of described blower fan and power supply is high speed mode of connection;
Described control unit is placed in first for setting described contactor group and arranges braking resistance and be designated the first mark, when detecting that braking resistance drops into, described contactor group is set and is placed in the 2nd, braking resistance is set and is designated the 2nd mark and opening timing device, preset after the time when timer reaches first, described contactor group is set and is placed in first and braking resistance is set and is designated the first mark;
Described control unit also for, arrange before described contactor group is placed in the 2nd, judge whether braking resistance mark is the first mark, if it does, then perform described to arrange described contactor group and be placed in the 2nd.
10. device according to claim 9, it is characterised in that, described contactor group comprises low speed contact device, the first high speed contactor and the 2nd high speed contactor;
The three-phase output end of power supply connects W1, V1, U1 end of described blower fan respectively by three normally opened contacts of described low speed contact device, the three-phase output end of described power supply also connects W2, V2, U2 end of described blower fan respectively by three normally opened contacts of the first high speed contactor, and W1, V1, U1 end of described blower fan is also connected to same end point by three normally opened contacts of the 2nd high speed contactor;
Described control unit is placed in first for setting described contactor group and is specially:
Described control unit is used for exporting high level to the control end of described low speed contact device, and exports lower level to the control end of described first high speed contactor and the 2nd high speed contactor;
Described control unit is placed in the 2nd for setting described contactor group and is specially:
Described control unit is used for exporting lower level to the control end of described low speed contact device, and exports high level to the control end of described first high speed contactor and the 2nd high speed contactor.
11. devices according to claim 10, it is characterised in that, low speed control signal exports the control end of low speed controller to by the normally closed contact of the normally closed contact of the first high speed contactor and/or the 2nd high speed contactor; High-speed control signal exports the control end of the first high speed contactor in parallel and the control end of the 2nd high speed contactor to by the normally closed contact of low speed contact device;
Then described control unit is used for exporting lower level to the control end of described low speed contact device, and is specially to the control end output high level of described first high speed contactor and the 2nd high speed contactor:
Described control unit is for exporting low level low speed control signal, and exports the high-speed control signal of high level;
Described control unit is used for exporting high level to the control end of described low speed contact device, and is specially to the control end output lower level of described first high speed contactor and the 2nd high speed contactor:
Described control unit is for exporting the low speed control signal of high level, and exports low level high-speed control signal.
12. devices according to claim 10, it is characterised in that, three normally opened contacts of described low speed contact device, the first high speed contactor, the 2nd high speed contactor are main contact;
Described control unit is also for the state of the secondary contact by the described low speed contact device of monitoring, and whether blower fan described in monitor in real time operates in low-speed mode;
And/or,
Described control unit is also for the state of the secondary contact by the described first high speed contactor of monitoring and/or the 2nd high speed contactor, and whether blower fan described in monitor in real time operates in high fast mode.
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| CN201310404160.8A CN103475279B (en) | 2013-09-06 | 2013-09-06 | A kind of brake resistor fan control method and device |
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| CN201310404160.8A CN103475279B (en) | 2013-09-06 | 2013-09-06 | A kind of brake resistor fan control method and device |
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| CN103475279B true CN103475279B (en) | 2016-06-01 |
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| GB2010966A (en) * | 1977-12-21 | 1979-07-04 | Gen Motors Ltd | Motor Vehicle Engine Coolant System |
| US5629596A (en) * | 1991-10-08 | 1997-05-13 | Fuji Electric Co., Ltd. | Method of controlling electric vehicle driven by an internal combustion engine |
| CN201430565Y (en) * | 2009-07-03 | 2010-03-24 | 山东华力电机集团股份有限公司 | Power consumption braking control module of three-phase asynchronous motor |
| CN202871435U (en) * | 2012-08-03 | 2013-04-10 | 株洲联诚集团有限责任公司 | Air-quantity self-adaption, low-noise and energy-saving-type urban rail locomotive brake resistor device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004187462A (en) * | 2002-12-06 | 2004-07-02 | Fuji Electric Fa Components & Systems Co Ltd | Inverter device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2010966A (en) * | 1977-12-21 | 1979-07-04 | Gen Motors Ltd | Motor Vehicle Engine Coolant System |
| US5629596A (en) * | 1991-10-08 | 1997-05-13 | Fuji Electric Co., Ltd. | Method of controlling electric vehicle driven by an internal combustion engine |
| CN201430565Y (en) * | 2009-07-03 | 2010-03-24 | 山东华力电机集团股份有限公司 | Power consumption braking control module of three-phase asynchronous motor |
| CN202871435U (en) * | 2012-08-03 | 2013-04-10 | 株洲联诚集团有限责任公司 | Air-quantity self-adaption, low-noise and energy-saving-type urban rail locomotive brake resistor device |
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