JP2019018787A - Railway vehicle and noise propagation suppression structure - Google Patents

Abstract

To provide a railway vehicle capable of suppressing propagation of electromagnetic noise between a plurality of cables laid on a vehicle.SOLUTION: A railway vehicle of the invention includes a transformer 53 transforming AC power input from a current collecting device 57, a power converter 52 connected to the side of a secondary winding B of the transformer through a first cable 42, an auxiliary machine 58 connected to the side of a tertiary winding C of the transformer through a second cable 46, and a noise propagation suppression structure 70 suppressing the propagation of the electromagnetic noise between the first cable and the second cable. The noise propagation suppression structure includes a conductive gutter-shaped member 71 receiving the first cable and the second cable from below and a conductive partition part 75 partitioning the first cable and the second cable.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a railway vehicle and a noise propagation suppressing structure suitable for the railway vehicle.

  An electric railway is driven by electric power supplied via an overhead line and a rail. In addition to electromagnetic noise generated by power converters in substations and electromagnetic noise generated by inverters for driving railway vehicles, these overhead lines and rails are also subject to electromagnetic noise generated as a result of the pantograph being disconnected from the overhead line, Various noises such as noise generated when the line current intermittently flows depending on the contact state between the wheel and the rail may be superimposed.

  Since electric railways have different mounting parts for each vehicle, cables such as a power supply line and a ground line are routed across the entire vehicle. When electromagnetic noise leaking from vehicle drive inverters, transformers, motors, etc. is transmitted to the cable, the noise propagates throughout the vehicle, which may cause malfunction of signal equipment such as sensors inside and outside the railway vehicle, communication equipment, and railroad crossing controllers. .

  As a technique for suppressing such noise propagation, for example, Patent Document 1 discloses that “the ceiling portion of the vehicle control device box is used to draw and connect each wire to the vehicle control device box while ensuring a separation distance between the wires. Provide an opening ”. According to this patent document 1, the effect which suppresses the noise propagation between wiring regarding the connector part of a vehicle control equipment box can be expected.

JP 2006-168534 A

  However, Patent Document 1 makes no mention of suppressing noise propagation between cables (wirings) that run in parallel after being laid on a vehicle, and it is important to take measures to suppress this noise propagation. . Moreover, in an actual railway vehicle, it is impractical to completely cover the cable with a shield duct because the cable laying space cannot be secured and the heat dissipation of the cable must be taken into consideration. Therefore, it is required to effectively suppress the propagation of electromagnetic noise between cables with a simple configuration.

  The present invention has been made to solve the above-described problem, and an object of the present invention is to provide a railway vehicle capable of suppressing propagation of electromagnetic noise between a plurality of cables laid on the vehicle. is there. It is another object of the present invention to provide a noise propagation suppressing structure that can be used in a railway vehicle and can suppress the propagation of electromagnetic noise between a plurality of cables laid on the vehicle.

  In order to achieve the above object, a representative present invention is configured to connect a vehicle, a current collector that collects AC power from an overhead wire, and the current collector to the primary winding side, and input from the current collector. A transformer for transforming the AC power generated, a power converter connected to the secondary winding side of the transformer via a first cable and driving a main motor, and a third winding side of the transformer An auxiliary machine that is connected via two cables and operates by receiving electric power from the transformer, and a noise propagation suppressing structure that suppresses electromagnetic noise from propagating between the first cable and the second cable; The noise propagation suppressing structure is attached to the bottom of the vehicle, and is a conductive bowl-shaped member that receives the first cable and the second cable from below, which run parallel to each other with a space therebetween in the horizontal direction. And the first cable and the second cable And having a conductive partition portion that partitions the table, the.

  According to the present invention, it is possible to suppress propagation of electromagnetic noise between a plurality of cables laid on a vehicle. Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

1 is an overall configuration diagram of a railway vehicle according to a first embodiment of the present invention. It is sectional drawing which shows the cable wiring structure of the rail vehicle shown in FIG. It is (a) sectional view and (b) top view showing the structure of the electric wire toy concerning a first embodiment of the present invention. It is a figure which shows the analysis model of simulation, (a) The analysis model of a conventional structure, (b) The analysis model of this invention is shown. It is a figure which shows the result of a simulation analysis using the analysis model shown in FIG. It is sectional drawing which shows the modification of the electric wire toy which concerns on 1st embodiment. It is a top view which shows the usage example which combined the electric wire toy which concerns on 1st embodiment, and the electric wire toy which concerns on the modification. It is sectional drawing of the electric wire toy which concerns on 2nd embodiment of this invention. It is (a) sectional drawing and (b) side view which show the structure of the electric wire toy concerning 3rd embodiment of this invention. It is a perspective view of the electric wire toy which concerns on 4th embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof will be omitted.

"First embodiment"
FIG. 1 is an overall configuration diagram of a railway vehicle according to a first embodiment of the present invention. 1 includes a plurality of vehicles 51, a pantograph (current collector) 57 that collects AC power from the overhead line 10, a transformer (transformer) 53, a main motor 54 that drives wheels 55, A power converter (power conversion device) 52 that drives the main motor 54, an auxiliary device 58 such as a ventilation air conditioner, a vehicle upper 56, and a wire toy (noise propagation suppression structure) 70 described later in detail. Prepare.

  The transformer 53 is connected to the pantograph 57 at one end of the primary winding A, and transforms AC power input from the pantograph 57. Further, the other end side of the primary winding A of the transformer 53 is connected to the vehicle ground line 44 and is connected to the vehicle 51 via the ground resistor 47.

  The power converter 52 is connected to the secondary winding B side of the transformer 53 via a power input line (first cable) 42. The power converter 52 includes a converter and an inverter, and the converter changes the AC voltage input from the secondary winding B side of the transformer 53 to a desired DC voltage. The inverter converts the DC voltage converted by the converter into an AC voltage having an arbitrary voltage and frequency, and outputs the AC voltage to the main motor 54. The auxiliary machine 58 is connected to the tertiary winding C side of the transformer 53 via the vehicle wiring (second cable) 46 and operates by receiving electric power from the transformer 53.

  In FIG. 1, as an example of the power converter 52 according to the present embodiment, a case where the power converter 52 is applied to an AC vehicle with an AC input is shown as an example. Can be applied similarly.

  In the example of FIG. 1, the large devices of the transformer 53 and the power converter 52 are installed in different vehicles 51 because the installation space is limited. Therefore, the power input line 42 connecting the transformer 53 and the power converter 52 is routed across the vehicle 51. The power converter 52 and the main motor 54 are connected by a three-phase output line 43 and installed in the vehicle 51. When driving the main motor 54 of the vehicle 51 in which the power converter 52 is not installed, a three-phase output line 43 that connects the main motor 54 and the power converter 52 is also routed across the vehicle 51. In addition, the auxiliary machine 58 is arranged in each vehicle 51, and the vehicle wiring 46 connected to the auxiliary machine 58 in order to obtain electric power from the transformer 53 is routed across the vehicle 51.

  In the case of a railway vehicle, for example, a power converter 52 such as an inverter for driving a vehicle or a converter for generating a power supply voltage becomes a noise source, and electromagnetic noise generated by these power converters 52 is a power supply input connected to the power converter 52. It propagates to the line (first cable) 42 and the three-phase output line 43 (hereinafter, these may be collectively referred to as “main circuit wiring 41”). Therefore, there is a possibility that electromagnetic noise from the main circuit wiring 41 may propagate to the vehicle wiring (second cable) 46 that runs parallel to the main circuit wiring 41. Therefore, in order to suppress the propagation of the electromagnetic noise, the electric wire toy 70 that is a noise propagation suppression structure is installed in the present embodiment. Hereinafter, the details of the electric wire toy 70 will be described with reference to the drawings.

  2 is a cross-sectional view showing the cable routing structure of the railway vehicle shown in FIG. 1, and FIG. 3 is a cross-sectional view (a) and a plan view (b) showing the structure of the electric wire toy according to the first embodiment of the present invention. . The electric wire toy 70 which is a noise propagation suppressing structure is a conductive wiring duct for fixing a cable (main circuit wiring 41, vehicle wiring 46) to the conductive casing 12 constituting the bottom of the vehicle 51. . As shown in FIGS. 2 and 3, main circuit wiring 41 (power input line 42, three-phase output line 43) and vehicle wiring 46 are laid on a wire toy 70 for fixing to the bottom of the vehicle 51.

  As shown in FIG. 3, a plurality of electric wire toys 70 are provided at predetermined intervals along the longitudinal direction of the cable. The electric wire toy 70 includes two bent portions having a substantially U-shaped cross section, that is, a hook-shaped member 71 formed with a first bent portion 71a and a second bent portion 71b, a first bent portion 71a, and a second bent portion 71b. And a partition portion 75 for partitioning. The bowl-shaped member 71 and the partition part 75 are made of a conductive material and are integrally formed. The first bent portion 71a and the second bent portion 71b need not be U-shaped as long as they can receive cables.

  The main circuit wiring 41 and the vehicle wiring 46 are routed with a space therebetween in the horizontal direction. The first bent portion 71a receives the vehicle wiring 46 from below, and the second bent portion 71b extends the main circuit wiring 41 downward. Accept from. The main circuit wiring 41 and the vehicle wiring 46 are physically shielded by the partition portion 75.

  A flat surface 76 as a fixed portion fixed to the housing 12 is formed at the upper end portion of the partition portion 75. When the flat surface 76 is fixed to the housing 12 via a metal bolt 72, the housing 12 and the flat surface 76 are electrically connected. Note that the flat surface 76 does not have to be fixed to the housing 12 with the bolts 72 if the flat surface 76 can be held in a state where it is in contact with and electrically connected to the housing 12. Further, in order to omit the fixing with the bolts 72, an elastic force may be given to the upper end portion of the partition portion 75, and the upper end portion may be pressed against the housing 12 to maintain the electrical connection state.

  The electric wire toy 70 configured in this manner abuts against a pair of angles 30 disposed along the main circuit wiring 41 and the vehicle wiring 46 from below, and the left and right ends of the bowl-shaped member 71 and the flat surface 76 are in contact with each other. The three places are fixed to the case 12 by fastening them to the case 12 with bolts 72.

  Next, the result of the simulation analysis performed to verify the noise propagation suppression effect of the electric wire toy 70 will be described. FIG. 4 is a diagram showing a simulation analysis model of (a) a conventional structure and (b) the present invention, and FIG. 5 is a diagram showing a result of the simulation analysis. As shown in FIG. 4, a load (100 pF) is applied to one end of the main circuit wiring 41 that is the excitation wiring, the other end is the excitation source (1 V), and a load (100 pF) is applied to both ends of the vehicle wiring 46 that is the receiving wiring. The simulation analysis was performed under the conditions applied. As a result, as shown in FIG. 5, it was found that the terminal voltage of the vehicle wiring 46 (receiving side wiring) when the electric wire toy 70 is provided is significantly reduced as compared with the conventional structure.

  This is because the induced current generated by the noise current flowing through the main circuit wiring 41 also flows through the bolt 72 that fixes the flat surface 76 and the housing 12, and therefore the induced current flowing through the wire toy 70 increases. Because.

  As is clear from the results of this simulation analysis, according to the electric wire toy 70 according to this embodiment, the distance between the main circuit wiring 41 and the vehicle wiring 46 is separated by the partition 75, and the partition 75 and the housing 12 are separated. Are electrically connected, noise propagation from the main circuit wiring 41 to the vehicle wiring 46 can be significantly suppressed. Moreover, since it is only necessary to appropriately arrange the electric wire toy 70 along the cable, an increase in weight can be suppressed. As shown in FIG. 10, the electric wire toy 70 can suppress noise propagation from the main circuit wiring 41 to the vehicle wiring 46 by the partition portion 75, so that the electric wire toy 70 may be provided without being spaced along the longitudinal direction of the cable. good. That is, it is good also as the tray type electric wire toy 70 (FIG. 10) which connected the some electric wire toy 70 shown in FIG. 3 in the longitudinal direction of the cable, and was integrated.

  The position of the partition portion 75 is preferably as close to the main circuit wiring 41 as possible. As a result, the main circuit wiring 41 that is the main noise propagation path and the electric wire toy 70 are close to each other, and the induced current flowing through the electric wire toy 70 is increased. Therefore, electromagnetic coupling noise propagation to the vehicle wiring 46 can be more effectively suppressed. It is. For this reason, in this embodiment, the partition 75 is arranged on the side close to the main circuit wiring 41 (the right side in FIG. 3). Of course, even if the partition portion 75 is provided in the approximate center of the bowl-shaped member 71, the effect of suppressing noise propagation can be expected.

  Next, a modified example of the electric wire toy 70 according to the first embodiment will be described. FIG. 6 is a cross-sectional view showing a modification of the electric wire toy according to the first embodiment. As shown in FIG. 6, in the electric wire toy 70-1 according to the modification, the partition portion 75 a is not fixed to the housing 12, and a slight gap is formed between the flat surface 76 of the partition portion 75 a and the housing 12. There is a structural difference from the first embodiment in that Also in the electric wire toy 70-1 according to this modified example, the main circuit wiring 41 and the vehicle wiring 46 are physically separated by the partition portion 75a, and noise propagation can be suppressed.

  FIG. 7 is a plan view illustrating a usage example in which the electric wire toy 70 according to the first embodiment and the electric wire toy 70-1 according to the modification are combined. As shown in FIG. 7, it is good also as a structure which provides the electric wire toy 70 and the electric wire toy 70-1 by turns in the longitudinal direction of a cable. If comprised in this way, compared with the case where all the electric wire toys 70 are provided, since the number of the bolts 72 fixed to the housing | casing 12 decreases, there exists an advantage that workability | operativity improves.

"Second embodiment"
Next, the electric wire toy 170 according to the second embodiment of the present invention will be described with reference to the drawings. FIG. 8 is a cross-sectional view of a wire toy 170 according to the second embodiment of the present invention. As shown in FIG. 8, the electric wire toy 170 is made of a conductive material and has a hook-shaped member 171 that is bent in a substantially U-shaped cross section. The main circuit wiring 41 and the vehicle wiring 46 are received and routed by the hook-shaped member 171.

  And in 2nd embodiment, the L-shaped metal fitting 173 which consists of an electroconductive material is provided in the collar-shaped member 171 separately. The metal fitting 173 is disposed between the main circuit wiring 41 and the vehicle wiring 46 at a position close to the main circuit wiring 41, and partitions the main circuit wiring 41 and the vehicle wiring 46.

  Even in the configuration of the second embodiment, the induced current flowing through the electric wire toy 170 via the metal fitting 173 increases, so that it is possible to suppress propagation of electromagnetic noise from the main circuit wiring 41 to the vehicle wiring 46. In addition, since the metal fitting 173 is comprised separately, the material can be suitably selected in consideration of the effect of suppressing noise propagation. Therefore, the material of the metal fitting 173 may be the same as that of the hook-shaped member 171, or a material having higher conductivity than the hook-shaped member 171 may be used.

"Third embodiment"
Next, the electric wire toy 270 which concerns on 3rd embodiment of this invention is demonstrated. FIG. 9 is a view showing the structure of the electric wire toy 270 according to the third embodiment of the present invention, in which (a) is a sectional view and (b) is a side view.

  The third embodiment is characterized in that the electric wire toy 270 is configured to receive the main circuit wiring 41 and the vehicle wiring 46 that are run side by side with a space in the vertical direction from below.

  Specifically, the electric wire toy 271 has a first U-shaped member 271a having a substantially U-shaped cross section made of a conductive material, and a substantially U-shaped cross section made of a conductive material and disposed above the first hook-shaped member 271a. And a second bowl-shaped member 271b. The first hook-shaped member 271a receives the vehicle wiring 46, and the second hook-shaped member 271b receives the main circuit wiring 41. Therefore, as shown in FIG. 9A, the main circuit wiring 41 and the vehicle wiring 46 are partitioned in the vertical direction by the second hook-shaped member 271b.

  Further, as shown in FIG. 9B, the first hook-like member 271a and the second hook-like member 271b are arranged with their positions alternately shifted along the longitudinal direction of the main circuit wiring 41 and the vehicle wiring 46. The In the present embodiment, the main circuit wiring 41 is disposed above the vehicle wiring 46 at a position as close as possible to the housing 12. This is because the induced current flowing through the housing 12 increases and noise propagation between the main circuit wiring 41 and the vehicle wiring 46 can be more effectively suppressed.

  According to the configuration of the third embodiment, since the first hook-like members 271a and the second hook-like members 271b are alternately arranged along the cable, a noise current flows through the main circuit wiring 41, and the main circuit The electric wire toy 270 can shield electromagnetic noise in the direction of the rail 59 radiated from the wiring 41 as an antenna. Therefore, noise to ground signal equipment arranged on the rail 59 can be reduced.

  As described above, according to each of the above-described embodiments, the main circuit wiring 41 and the vehicle wiring 46 that are routed in an existing railway vehicle can be obtained by simply attaching the conductive electric wire toy to the bottom of the vehicle 51. Can effectively suppress the propagation of electromagnetic noise.

  In addition, this invention is not limited to above-described embodiment, Various modifications are included. For example, the above-described embodiment has been described in detail for easy understanding of the present invention, and is not necessarily limited to one having all the configurations described. Further, a part of the configuration of an embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of an embodiment. Moreover, it is possible to add / delete / replace other configurations for a part of the configurations of the embodiments.

  For example, a large number of cables are routed in a railway vehicle, and the noise propagation suppression structure according to the present invention can be applied to all cables that can propagate electromagnetic noise. Moreover, even if it is the structure which bundled the some cable, the noise propagation between cable bundles can be suppressed by applying this invention similarly to the said embodiment.

10 Overhead wire 41 Main circuit wiring 42 Power input wire (first cable)
43 Three-phase output line 46 Vehicle wiring (second cable)
51 Vehicle 52 Power Converter (Power Converter)
53 Transformer
54 Main motor 57 Pantograph (current collector)
58 Auxiliary machine 70, 70-1, 170, 270 Electric wire toy (noise propagation suppression structure)
71a 1st bending part 71b 2nd bending part 71,171 ridge member 72 bolt 75 partition part 75a partition part 76 flat surface (fixed part)
173 Hardware 271a First hook-shaped member 271b Second hook-shaped member

Claims (12)

A vehicle,
A current collector that collects AC power from an overhead line;
A transformer connected to the current collector on the primary winding side and transforming AC power input from the current collector;
A power converter connected to the secondary winding side of the transformer via a first cable and driving a main motor;
An auxiliary machine connected to the tertiary winding side of the transformer via a second cable and operated by receiving electric power from the transformer;
A noise propagation suppression structure that suppresses propagation of electromagnetic noise between the first cable and the second cable, and
The noise propagation suppression structure is
A conductive hook-shaped member attached to the bottom of the vehicle and receiving the first cable and the second cable from the lower side that run parallel to each other in the horizontal direction;
A railway vehicle comprising: a conductive partition that partitions the first cable and the second cable. In claim 1,
A three-phase output line connecting between the main motor and the power converter is attached to the conductive hook-shaped member on the first cable side, and the conductive partition between the second cable A railway vehicle characterized by having a section. In claim 2,
The railcar according to claim 1, wherein the partition portion includes a fixing portion that is fixed in a state of being electrically connected to a bottom portion of the vehicle. In claim 3,
The railway vehicle according to claim 1, wherein the fixing portion is fixed to a bottom portion of the vehicle via a metal bolt. In claim 1,
The partition vehicle is arranged at a position closer to the first cable than the second cable. In claim 1,
The said partition part consists of electroconductive metal fittings, and is comprised by the said hook-shaped member and a separate body, The rail vehicle characterized by the above-mentioned. A vehicle,
A current collector that collects AC power from an overhead line;
A transformer connected to the current collector on the primary winding side and transforming AC power input from the current collector;
A power converter connected to the secondary winding side of the transformer via a first cable and driving a main motor;
An auxiliary machine connected to the tertiary winding side of the transformer via a second cable and operated by receiving electric power from the transformer;
A noise propagation suppression structure that suppresses propagation of electromagnetic noise between the first cable and the second cable, and
The noise propagation suppression structure is
A conductive first hook-shaped member that is attached to the bottom of the vehicle and that runs parallel to each other in the up-down direction and receives one of the first cable and the second cable from below, and the other from below. A railway vehicle comprising a conductive second bowl-shaped member. In claim 7,
A three-phase output line connecting between the main motor and the power converter is a hook on the side receiving the first cable of the conductive first hook-shaped member and the conductive second hook-shaped member. A conductive first hook-shaped member that is attached to a belt-shaped member and receives one of the three-phase output line and the second cable from below; and the conductive second hook-shaped member that receives the other from below; A railway vehicle characterized by comprising: In claim 7,
The rail car according to claim 1, wherein the first hook-shaped member and the second hook-shaped member are alternately arranged along a longitudinal direction of the first cable and the second cable. In claim 8,
The railway vehicle, wherein the first cable is routed above the second cable. A vehicle, a current collector that collects AC power from an overhead wire, a transformer connected to the current collector on the primary winding side and transforming AC power input from the current collector, and the transformer A power converter connected to the secondary winding side via the first cable and driving the main motor, and connected to the tertiary winding side of the transformer via the second cable and receiving power from the transformer A noise propagation suppression structure that is used in a railway vehicle equipped with an auxiliary machine that suppresses electromagnetic noise from propagating between the first cable and the second cable,
A conductive saddle-shaped member attached to the bottom of the vehicle and supporting the first cable and the second cable running in parallel in the horizontal direction from below;
A noise propagation suppressing structure comprising: a conductive partition that partitions the first cable and the second cable. In claim 11,
The noise propagation suppressing structure according to claim 1, wherein the partition portion includes a fixing portion that is fixed in a state of being electrically connected to a bottom portion of the vehicle.