CN217892525U - High-speed magnetic levitation traction power supply system - Google Patents
High-speed magnetic levitation traction power supply system Download PDFInfo
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- CN217892525U CN217892525U CN202222002501.6U CN202222002501U CN217892525U CN 217892525 U CN217892525 U CN 217892525U CN 202222002501 U CN202222002501 U CN 202222002501U CN 217892525 U CN217892525 U CN 217892525U
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Abstract
The utility model discloses a high-speed magnetic levitation pulls power supply system belongs to maglev train power supply technical field, including pulling power supply unit, long stator winding, should pull power supply unit and long stator winding and be connected through feeder cable, and pull and be provided with stator switch station and compensation capacitor group between power supply unit and the long stator winding, this stator switch station is used for control to pull the circuit break-make between power supply unit and the long stator winding, and the compensation capacitor group is used for long stator winding's reactive compensation. The utility model provides a high-speed magnetic levitation pulls power supply system, it can effectively solve current high-speed magnetic levitation and pull that the power supply system pressure drop is big, the problem that stator section effective voltage is low, and it need not change current power supply system structure by a wide margin, only needs to add the condenser in stator switch department, can effectively improve the voltage of motor stator section, increases the power supply distance who pulls the electric substation under the same converter.
Description
Technical Field
The utility model belongs to the technical field of the maglev power supply, concretely relates to high-speed magnetic levitation pulls power supply system.
Background
The maglev train is a novel non-contact type bottom surface rail transportation tool, and has the advantages of high speed, less maintenance and the like, thereby having wide application prospect.
The magnetic suspension power supply system can be divided into a main substation, a traction power supply system and a power supply system in terms of functions. The 110KV power supply of the power system is reduced to a 20KV medium-voltage power supply through the main transformer by the main substation, and then the traction power supply system and the power supply system are supplied with power. The traction power supply system is used for reducing the voltage of 20KV medium voltage, rectifying the reduced voltage into direct current, converting the direct current into three-phase alternating current with adjustable voltage, frequency, current and phase angle through an inverter, and feeding the three-phase alternating current to a stator winding along a line for traction or braking of a train; the power supply system sends the 20KV power supply of the main substation to the power substations beside the line through the 20KV medium-voltage looped network cable, and the power substations beside the line supply power to the stations and the power loads along the line after the 20KV power supply is reduced or rectified.
The existing magnetic suspension power supply system has high line voltage drop due to the reactance of a long-distance line, and simultaneously has larger back electromotive force in a high-speed area, so that the speed is difficult to increase.
SUMMERY OF THE UTILITY MODEL
To one or more in the above defect or the improvement demand of prior art, the utility model provides a power supply system is pull in high-speed magnetic levitation for solve current magnetic levitation power supply system problem that the line pressure drop is high in long distance line.
To achieve the above object, the utility model provides a high-speed magnetic levitation traction power supply system, which comprises
A traction power supply unit;
the long stator winding is used for generating a rotating magnetic field for the traction and driving of a magnetic suspension train, and the long stator winding is connected with the traction power supply unit through a feeder cable;
the stator switching station is arranged between the traction power supply unit and the long stator winding and is used for controlling the on-off of a circuit between the traction power supply unit and the long stator winding;
and the compensation capacitor group is arranged between the traction power supply unit and the long stator winding and is used for reactive compensation of the long stator winding.
As a further improvement, the long stator winding includes multistage stator section, each the stator section all with it connects to pull the power supply unit electricity, and each the stator section with it all is equipped with stator switch to pull between the power supply unit.
As a further improvement of the present invention, the compensation capacitor bank includes a plurality of capacitors, the capacitors are arranged in one-to-one correspondence with the stator segments.
As a further improvement, each stator section department all is equipped with a induction system, a induction system is used for responding to each the current condition of magnetic-levitation train of stator section department, and be used for control stator switch's break-make.
As the utility model discloses a further improvement, each stator section department all is equipped with second induction system, second induction system is used for responding to each the current speed of magnetic suspension train in stator section department, and be used for control the break-make of condenser.
As a further improvement of the utility model, the traction power supply unit includes first traction converter and second traction converter, first traction converter with the second traction converter sets up in parallel, just first traction converter with the second traction converter divides to locate the both ends of long stator winding.
The above-described improved technical features may be combined with each other as long as they do not conflict with each other.
Generally, through the utility model discloses above technical scheme that conceive compares with prior art, and the beneficial effect that has includes:
(1) The utility model discloses a high-speed magnetic levitation pulls power supply system, it sets up through dividing into the multistage with long stator winding to set up stator switch and condenser in every stator section department, compensate each stator section department voltage through the condenser, its voltage that can effectively improve each stator section department makes and improves its power supply distance greatly under the same power supply unit that pulls.
(2) The utility model discloses a high-speed magnetic suspension traction power supply system, it is through setting up stator switch at each stator section department to cooperate and set up first induction system, through the current condition of the magnetic suspension train of each stator section department of first induction system response, when this stator section has the magnetic suspension train to pass, it can control stator switch to close, make the traction power supply unit supply power to this stator section, guarantee this stator section to the effective drive of magnetic suspension train; when the magnetic suspension train does not pass through the stator section, the first induction device can control the stator switch to be switched off, the traction power supply unit can not supply power to the stator section, the effective power supply of the traction power supply unit is ensured, and the voltage stability of the corresponding running section of the magnetic suspension train is ensured.
(3) The utility model discloses a high-speed magnetic levitation pulls power supply system, it utilizes second induction system response each stator section department magnetic-levitation train's current speed through setting up second induction system at each stator section department to this judges the train and is in acceleration state or uniform velocity state, because the stator section needs a large amount of perceptions idle when the high frequency power supply, consequently carries out reactive compensation through starting the condenser when acceleration state, with this high-efficient acceleration of assurance magnetic-levitation train; and when in a constant speed state, the normal operation of the magnetic suspension train can be ensured only by supplying power to the magnetic suspension train through the traction power supply unit.
Drawings
Fig. 1 is an overall structural schematic diagram of the high-speed magnetic levitation traction power supply system in the embodiment of the present invention.
Throughout the drawings, like reference numerals designate like features, and in particular:
1. a capacitor; 2. a stator switch; 3. a stator segment; 4. a feeder cable; 5. a first traction converter; 6. a second traction converter.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Example (b):
referring to fig. 1, the high-speed magnetic levitation traction power supply system in the preferred embodiment of the present invention includes a traction power supply unit, and the traction power supply unit is mainly used for the power supply requirement of the high-speed magnetic levitation traction system; the long stator winding is used for generating a rotating magnetic field to be used for traction and driving of a magnetic suspension train, the magnetic suspension train is provided with a rotor corresponding to the long stator winding, thrust is generated to the rotor in the rotating magnetic field to pull the magnetic suspension train to move, and the long stator winding is connected with a traction power supply unit through a feeder cable 4 to ensure that the long stator winding generates a stable magnetic field; the stator switch 2 station is arranged between the traction power supply unit and the long stator winding and is used for controlling the on-off of a circuit between the traction power supply unit and the long stator winding; the compensation capacitor 1 group is also arranged between the traction power supply unit and the long stator winding, and is mainly used for reactive compensation of the long stator winding.
In the conventional high-speed magnetic suspension traction power supply system, because the whole line of the long stator winding is longer, the voltage drop of the line is high when the traction power supply unit is used for supplying power, and meanwhile, when a magnetic suspension train accelerates, the counter potential is larger, and the speed of the magnetic suspension train is difficult to promote. This application is through setting up compensating capacitor 1 group between traction power supply unit and long stator winding, utilizes compensating capacitor 1 group to carry out reactive compensation when traction power supply unit supplies power, and it can effectively improve the voltage of long stator winding end, ensures the effective operation of drawing of maglev train.
Further, as the utility model discloses a preferred embodiment, long stator winding in this application includes multistage stator segment 3, and each stator segment 3 all is connected with the power supply unit electricity that pulls to all be provided with stator switch 2 between each stator segment 3 and the power supply unit that pulls, 2 quantity of stator switch and 3 quantity one-to-one settings of stator segment. When the traction power supply unit is used for supplying power, the long stator winding is long in line, and it is unrealistic to supply power to all long stator winding lines by only using the traction power supply unit, so that the stator switch 2 is arranged at each stator section 3, and when the magnetic suspension train runs to a corresponding position, the stator sections 3 at the running section of the magnetic suspension train are started to drive the magnetic suspension train; meanwhile, the stator switch 2 disconnects the line of the maglev train which does not pass through the section drop, so that the traction power supply unit does not supply power to the maglev train, the traction power supply unit is ensured to supply power to the effective stator section 3, and the effective operation of the maglev train is ensured.
Further preferably, a first induction device is arranged at each stator segment 3, and the first induction device is used for inducing the passing condition of the magnetic suspension train at each stator segment 3 and controlling the on-off of the stator switch 2. The traction power supply unit and the stator section 3 need to be cut off by the stator switch 2 of the stator section 3 of the non-passing section of the magnetic-levitation train, the traction power supply unit and the stator section 3 need to be communicated by the stator switch 2 at the passing position of the magnetic-levitation train, the running of the magnetic-levitation train is a dynamic process, and the stator switches 2 at different positions need to be switched to be in an open-closed state according to the running condition of the magnetic-levitation train. Therefore, the first induction device is arranged at each stator section 3, when the first induction device induces that a magnetic-levitation train is arranged above the stator section 3, the stator switch 2 is ensured to be closed, and the stator section 3 drives the magnetic-levitation train to normally run; when the first induction device induces that the corresponding stator section 3 does not have a magnetic floating train running path, the stator switch 2 is disconnected, and the traction power supply unit does not supply power to the stator section 3 at the position.
Further preferably, the compensating capacitor 1 group also comprises a plurality of capacitors 1, the capacitors 1 are arranged in one-to-one correspondence with the stator sections 3, when the capacitors 1 are used for performing reactive compensation on the stator sections 3, in order to ensure that the corresponding stator sections 3 can be effectively compensated, the capacitors 1 are arranged at the stator sections 3, and when a magnetic-levitation train passes through the corresponding stator section 3 section and needs to be accelerated, the capacitors 1 at the corresponding stator sections 3 are started, the capacitors 1 are used for performing reactive compensation, and the stable accelerated running of the magnetic-levitation train is ensured.
Further, since the maglev train needs high frequency power supply and large amount of inductive reactive power only in the acceleration stage, the capacitor 1 corresponding to the stator section 3 needs to be started not when the maglev train passes through the stator section 3, but only in the acceleration stage of the maglev train, the capacitor 1 needs to be started correspondingly. Therefore, a second induction device is arranged at each stator segment 3, and the second induction device is used for inducing the passing speed of the magnetic suspension train at each stator segment 3 and controlling the on-off of the capacitor 1. It should be noted that when the second sensing device cuts off the connection between the capacitor 1 and the stator section 3, it will not cause electric transmission between the traction power supply unit and the stator section 3, so as to ensure normal uniform speed operation of the magnetic-levitation train. When the maglev train moves at a constant speed, the second induction device controls the capacitor 1 not to be started, so that the maglev train is only powered by the traction power supply unit; when the maglev train needs to be accelerated, the second induction device induces the speed of the maglev train to increase, and controls the capacitor 1 at the position corresponding to the stator section 3 to start, so that the capacitor 1 carries out reactive compensation on the capacitor.
Further, as the preferred embodiment of the present invention, the traction power supply unit in the present application includes a first traction converter 5 and a second traction converter 6, the two traction converters are arranged in parallel, and the two converters are respectively arranged at two ends of the long stator winding. Because the long stator winding has a long circuit, the voltage of the stator section 3 at the other end is lower due to the unilateral power supply mode, and effective traction cannot be achieved, the first traction converter 5 and the second traction converter 6 are respectively arranged at the two ends of the long stator winding in the traction direction, and the whole long stator winding is supplied with power through the two traction converters, so that traction power supply of the whole circuit is ensured.
Further, as the utility model discloses an optional embodiment, condenser 1 in this application only sets up at the orbital section of pulling of whole magnetism suspension, need correspond 3 intervals of stator section with higher speed promptly, all need not set up condenser 1 at the orbital uniform velocity section of magnetism suspension and braking section.
The utility model provides a power supply system is pull to high-speed magnetic levitation, it can effectively solve current high-speed magnetic levitation and pull that the power supply system pressure drop is big, the problem that stator section 3 effective voltage is low, and it need not change current power supply system structure by a wide margin, only needs to add condenser 1 in stator switch 2 departments, can effectively improve motor stator section 3's voltage, increases the power supply distance that pulls the electric substation under the same converter.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A high speed magnetic levitation traction power supply system, comprising:
a traction power supply unit;
the long stator winding is used for generating a rotating magnetic field for the traction and driving of a magnetic suspension train, and the long stator winding is connected with the traction power supply unit through a feeder cable;
the stator switching station is arranged between the traction power supply unit and the long stator winding and is used for controlling the on-off of a circuit between the traction power supply unit and the long stator winding;
and the compensation capacitor bank is arranged between the traction power supply unit and the long stator winding and is used for reactive compensation of the long stator winding.
2. The system of claim 1, wherein the long stator winding comprises a plurality of stator segments, each stator segment is electrically connected to the traction power supply unit, and a stator switch is disposed between each stator segment and the traction power supply unit.
3. A high speed magnetic levitation traction power supply system as recited in claim 2 wherein said compensation capacitor bank comprises a plurality of capacitors, said capacitors being arranged in one-to-one correspondence with said stator segments.
4. The high-speed magnetic-levitation traction power supply system as claimed in claim 2, wherein each stator segment is provided with a first induction device, and the first induction device is used for inducing the passing condition of the magnetic-levitation train at each stator segment and controlling the on-off of the stator switch.
5. A high speed magnetic levitation tractive power supply system as claimed in claim 3, wherein each stator segment is provided with a second induction device for inducing the magnetic levitation train passing speed at each stator segment and controlling the on/off of the capacitor.
6. The system according to any of claims 1 to 5, wherein the traction power supply unit comprises a first traction converter and a second traction converter, the first traction converter and the second traction converter are arranged in parallel, and the first traction converter and the second traction converter are respectively arranged at two ends of the long stator winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222002501.6U CN217892525U (en) | 2022-07-29 | 2022-07-29 | High-speed magnetic levitation traction power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222002501.6U CN217892525U (en) | 2022-07-29 | 2022-07-29 | High-speed magnetic levitation traction power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217892525U true CN217892525U (en) | 2022-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222002501.6U Active CN217892525U (en) | 2022-07-29 | 2022-07-29 | High-speed magnetic levitation traction power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217892525U (en) |
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2022
- 2022-07-29 CN CN202222002501.6U patent/CN217892525U/en active Active
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