JP6081091B2 - Railway vehicle control system - Google Patents

Description

  Embodiments described herein relate generally to a railway vehicle control apparatus.

  Railway vehicles are equipped with, for example, a converter that converts an AC voltage into a DC voltage, or a power converter such as an inverter that converts a DC voltage into a three-phase AC voltage. In general, such a power conversion device includes a large-capacity semiconductor switching element such as an IGBT, a plurality of semiconductor elements such as a diode, and a cooler thermally connected thereto. And it cools by sending cooling air to a cooler.

  A VVVF type railway vehicle control device having two groups of inverter units having power conversion semiconductor element circuits that are arranged under the floor of a railway vehicle and drive two three-phase AC motors for one vehicle in one group Two inverter units are arranged side by side on the side of the vehicle.

  According to such a control device, when the inverter unit is removed, access can be made only from one side of the vehicle, and the inverter unit is excellent in maintainability. Further, in the case of an inverter unit having a structure that protrudes from the vehicle side surface of the device such as a heat pipe, the protruding structure is concentrated on one vehicle side surface, so that the external dimensions including the protruding portion are not complicated.

JP 2003-48533 A

  However, in the case of the control device configured as described above, since the inverter unit occupying a large weight ratio in the device is biased toward the device one side, the center of gravity of the entire device is biased, and the mechanical strength of the housing needs to be increased. is there.

  In the case of cooling the semiconductor element by taking the traveling wind into the fins protruding from the side of the device car like a heat pipe, the heat pipe arranged in the lee is cooled by the traveling wind heated by the upwind heat pipe. There is a need. Therefore, it is necessary to increase the cooling performance of the inverter unit located on the leeward side as compared with the one-unit arrangement of the inverter units. As a result, it is necessary to take measures such as increasing the number of heat pipes and the heat radiation area of the fins, or improving the thermal conductivity by changing the semiconductor element mounting portion of the cooler to copper instead of aluminum. Thereby, the external shape and weight of an inverter unit increase. For the above reasons, the outer shape and mass of the control device increase.

  The present invention has been made in view of the above points, and an object thereof is to provide a control apparatus for a railway vehicle that can be reduced in size and weight while ensuring cooling of the inverter unit.

According to the embodiment, the railway vehicle control device is installed under the floor of the railway vehicle, and includes a ceiling wall and a bottom wall, a pair of side walls extending in the traveling direction of the railway vehicle, and a pair extending in a direction orthogonal to the traveling direction. A first inverter unit and a second inverter unit each having a box-shaped casing having a side wall, a semiconductor element circuit for power conversion that drives an electric motor, and a cooler that cools the semiconductor element,
The first and second inverter units are arranged diagonally with respect to the center position of the casing in the casing, and the coolers of the first and second inverter units protrude outside the casing. Is provided. A plurality of first main circuit output wirings and a plurality of first main circuit input wirings connected to the first inverter unit; a plurality of second main circuit output wirings connected to the second inverter unit; Main circuit input wiring. The connection portion between the first and second main circuit output wiring and the outfitting wiring is disposed on the side wall closest to the first and second inverter units of the housing, and the first and second main circuit input wiring are It arrange | positions in the position which does not cross | intersect the said 1st and 2nd main circuit output wiring within the said housing | casing. The control unit further includes a control unit that controls switching of the semiconductor element circuit of the first and second inverter units, and a gate wiring that connects the control unit to the first and second inverter units. Arranged alongside the first or second inverter unit in the casing, the first and second main circuit input wirings are in a receiving chamber that is diagonal to the control unit with respect to the center of the casing. It is mainly arranged.

FIG. 1 is a perspective view showing a railway vehicle control device according to a first embodiment. FIG. 2 is a cross-sectional view of the control device showing a state where the control device is installed under the floor of the railway vehicle. FIG. 3 is a plan view showing an internal structure of the control device as viewed from above. FIG. 4 is a plan view showing an internal structure of a railway vehicle control device according to a second embodiment as viewed from above. FIG. 5: is a top view which shows the internal structure which looked at the control apparatus for rail vehicles which concerns on 3rd Embodiment from upper direction. FIG. 6 is a plan view showing a wiring panel of the control device according to the third embodiment. FIG. 7 is a side view of the control device showing a process of attaching the wiring panel.

Hereinafter, control devices for railway vehicles according to various embodiments will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a perspective view showing a control device 10 for a railway vehicle according to the first embodiment, FIG. 2 is a cross-sectional view of the control device showing a state where the control device is installed under the floor of the rail vehicle, and FIG. It is a top view which shows the internal structure which looked at the control apparatus from upper direction.

  As shown in FIGS. 1 to 3, the control device 10 is configured as, for example, a power conversion device that converts DC power into AC power and supplies it to a three-phase AC motor or the like. The control device 10 includes a rectangular box-like substantially sealed casing 20, a plurality of, for example, two first and second inverter units 30a and 30b disposed in the casing, and a control unit disposed in the casing. 32 and a high-voltage circuit unit 34 disposed in the housing.

  The casing 20 has a rectangular ceiling wall 20a and bottom wall 20b, a pair of side walls 20c and 20d extending along the traveling direction A of the railway vehicle 40, and a pair extending in a direction (sleeper direction) orthogonal to the traveling direction A. Side walls 20e and 20f, and is made of a metal plate. In the present embodiment, a partition wall 21 is provided in the housing 20, and the partition wall is orthogonal to the side walls 20 c and 20 d and extends through substantially the center (center of gravity) C of the housing, and the side walls 20 c, It is provided between 20d. By the partition wall 21, the inside of the housing 20 is partitioned into a first device chamber 24a and a second device chamber 24b.

  A plurality of, for example, six hanging ears 22 are fixed to the ceiling wall 20a. These hanging ears 22 are provided side by side along the both side edges of the ceiling wall 20a.

  The casing 20 of the control device 10 is mounted under the floor of the railway vehicle 40 by a plurality of hanging ears 22, and the ceiling wall 20 a of the casing 20 is opposed to the floor of the railway vehicle 40 with a gap, and the bottom wall 20b faces the rail or the ground side with a gap. Further, the side walls 20c to 20f extend substantially perpendicular to the ground.

  The first inverter unit 30a includes a plurality of semiconductor elements 36 and capacitors 37 constituting an inverter circuit (semiconductor element circuit, main circuit) for power conversion that drives two three-phase AC motors for one vehicle in one group, And a cooler 38 for cooling these semiconductor elements 36. The plurality of semiconductor elements 36 are, for example, SiC elements that are low-loss semiconductor elements, or self-extinguishing semiconductor elements such as IGBTs (insulated gate bipolar transistors) and GTOs. For example, the SiC elements and the SiC elements A diode connected in antiparallel is modularized.

  The cooler 38 includes a heat receiving block 41 made of a material having high heat conductivity, for example, aluminum, and a large number of radiating fins 42 erected on the heat receiving block. The plurality of semiconductor elements 36 are mounted on the heat receiving surface of the heat receiving block 41.

  The second inverter unit 30b is configured in the same manner as the first inverter unit 30a, and an inverter circuit for power conversion that drives two three-phase AC motors for one vehicle in one group, and a semiconductor element 36 that constitutes the inverter circuit. And a cooler 38b for cooling. The cooler 38b includes a heat receiving block 41 on which a semiconductor element is mounted, and a large number of radiating fins 42 erected on the heat receiving block. The first and second inverter units 30a and 30b constitute a VVVF power converter.

  The first inverter unit 30a and the second inverter unit 30b are disposed in a diagonal position with respect to the center C of the housing in the housing 20. In the present embodiment, the first inverter unit 30a is disposed in a region on the side wall 20c side in the first device chamber 24a, and the second inverter unit 30b is disposed in a region on the side wall 20d side in the second device chamber 24b. Has been placed. Thereby, the 1st inverter unit 30a and the 2nd inverter unit 30b are set | placed in the rectangular-shaped housing | casing 20, and are arrange | positioned in two corner | angular parts which are diagonally related.

  The cooler 38a of the first inverter unit 30a is located on the side wall 20c side, and the radiating fins 42 protrude outward from the side wall 20c and are exposed to the outside. The cooler 38b of the second inverter unit 30b is located on the opposite side wall 20d side, and the radiating fins 42 protrude outward from the side wall 20d and are exposed to the outside.

  In the present embodiment, the control unit 32 and the high-voltage circuit unit 34 are disposed diagonally with respect to the center C of the housing in the housing 20. That is, the control unit 32 is disposed in the region on the side wall 20d side in the first device chamber 24a, and the high voltage circuit unit 34 is disposed in the region on the side wall 20c side in the second device chamber 24b.

  In the present embodiment, a maintenance opening 44a is formed on the side wall 20c of the housing 20 at a position facing the second device chamber 24b. The opening 44a is covered with a removable cover 46a. Further, a maintenance opening 44b is formed on the side wall 20d of the housing 20 at a position facing the first device chamber 24a. The opening 44b is covered with a removable cover 46b.

  As shown in FIGS. 2 and 3, the control device 10 includes three first main circuit output wirings u, v, and w connected to the first inverter unit 30a, and two first main circuit input wirings P. , N, and three second main circuit output wirings u, v, w and two second main circuit input wirings P, N connected to the second inverter unit 30b.

  One end of the first main circuit output wiring u, v, w is connected to the first inverter unit 30a, and the other end is a first connection terminal (connector connector) provided on the side wall 20f closest to the first inverter unit 30a. 50a. The first main circuit output wirings u, v, and w are respectively connected to the equipment wiring extending from the railcar 40 side at the position of the first connection terminal 50a.

One end of the second main circuit output wiring u, v, w is connected to the second inverter unit 30b, and the other end is a second connection terminal (connector connector) provided on the side wall 20e closest to the second inverter unit 30b. 50b. The second main circuit output wirings u, v, and w are respectively connected to the equipment wiring extending from the railcar 40 side at the position of the second connection terminal 50b.
The first and second main circuit output wirings u, v, w are arranged on the inner surface side of the ceiling wall 20a of the housing 20, and are routed along the ceiling wall.

One end of the first main circuit input wirings P and N is connected to the first inverter unit 30a, and the other end is connected to a third connection terminal (connection connector) 50c provided on the side wall 20e. One end of the second main circuit input wiring P, N is connected to the second inverter unit 30b, and the other end is connected to a third connection terminal (connection connector) 50c provided on the side wall 20e. The first and second main circuit input wirings P and N are arranged on the inner surface side of the ceiling wall 20a of the casing 20 and are connected to the first and second main circuit output wirings u, v, and w and the casing 20. It is routed to a position that does not intersect.
The first and second main circuit input wirings P and N are respectively connected to the equipment wiring extending from the railcar 40 side at the position of the third connection terminal 50c.

  The control unit 32 is connected to the first and second inverter units 30a and 30b via the gate wirings 51a and 51b, and outputs a gate signal through these gate wirings, whereby the semiconductor of the first and second inverter units. Controls switching of the element circuit. One ends of the gate wirings 51a and 51b are connected to the control unit 32, and the other ends are connected to the first and second inverter units 30a and 30b, respectively.

  The control unit 32 is arranged side by side with the first or second inverter unit 30a, 30b in the housing 20, and the first and second main circuit input wirings P, N described above are connected to the center c of the housing 20. The control unit 32 is mainly disposed in the device room area diagonally positioned.

  According to the control apparatus 10 for a railway vehicle according to the first embodiment configured as described above, the first and second inverter units 30a and 30b occupying a large weight ratio in the apparatus are the center of the control apparatus 10. C, here, since it is arranged at a diagonal position with respect to the center C of the housing 20, the center of gravity of the control device can be set near the center of the device. Thereby, it is not necessary to strengthen the strength of the casing 20 of the control device 10 more than necessary, and weight reduction can be realized as compared with a device having an eccentric gravity center.

  The coolers 38a and 38b of the first and second inverter units 30a and 30b are provided on the pair of side walls 20c and 20d facing each other of the housing 20, and the radiating fins 42 are external to the different side walls 20c and 20d. It protrudes toward. In this manner, in the method of cooling the semiconductor element 36 by projecting the heat dissipating fins of the cooler on the side surface of the housing 20 and taking in the traveling wind, the coolers 38a and 38b are not overlapped with the traveling direction of the railcar 40 By providing the two opposed side walls 20c and 20d on the opposite side, the leeward is not affected by the leeward heat of the conventional technology. Therefore, the cooling performance of the coolers 38a and 38b can be optimized. As a result, it is possible to reduce the size of the coolers 38a and 38b and the radiation fins 42 and to reduce the weight using an aluminum block. As described above, the entire control device 10 can be reduced in size and weight.

  Connection parts (first connection terminal, first connection terminal) between the first and second main circuit output wirings u, v, w for driving the three-phase AC motors output from the first and second inverter units 30a, 30b and the equipment wiring, respectively. 2 connection terminals) are arranged on the side walls of the housing 20 at the central portions of the side walls 20e and 20f closest to the first and second inverter units 30a and 30b, respectively. As a result, the lengths of the first and second main circuit output wirings u, v, w of the first and second inverter units 30a, 30b can be shortened as much as possible, and the weight can be reduced by shortening the wiring in the apparatus. It becomes.

  Also, the first and second main circuit input wirings P and N are routed to positions that do not intersect the first and second main circuit output wirings u, v, and w in the housing 20 and connected to the inside of the apparatus. Has been. As a result, the wiring path is optimized, and the weight can be reduced and the size can be reduced by space saving. Furthermore, the insulation process can be simplified, and the generated loss can be reduced by shortening the main circuit input wiring that generates the loss.

  The control unit 32 having the gate wirings 51a and 51b for driving the gate amplifier for controlling the switching of the semiconductor elements 36 of the first and second inverter units 30a and 30b is the first or second inverter unit in the housing 20. 30a and 30b are arranged side by side, and the first and second main circuit input wirings P and N are mainly arranged in an equipment room region diagonally to the control unit 32 with respect to the center C of the housing 20. ing. The control unit 32 is disposed at a position where it can be easily accessed from the side wall 20d side of the housing 20, and the gate wirings 51a and 51b connected between the first and second inverter units 30a and 30b, respectively, are shortest and the same wiring. It becomes possible to connect with long.

  As a result, the equipment room provided with the main circuit input wiring and the control circuit equipment room including the control unit 32 are separated, and the gate wiring 51a, 51b connected from the control unit to the first and second inverter units 30a, 30b. The noise can be reduced by shortening. As a result, it is not necessary to attach a noise countermeasure core, and the apparatus can be reduced in size and weight by reducing the number of supplies. In addition, since the distance between the control unit 32 and each of the inverter units 30a and 30b can be made equal, it is possible to suppress the bias of noise to the gate wirings 51a and 51b.

Next, a control apparatus for a railway vehicle according to another embodiment will be described.
In other embodiments described below, the same reference numerals are given to the same portions as those in the first embodiment described above, and the detailed description thereof will be omitted, and different portions will be mainly described.

(Second Embodiment)
FIG. 4 is a plan view of the control device 10 according to the second embodiment as viewed from above. According to the second embodiment, the control device 10 includes three first main circuit output wires u, v, and w connected to the first inverter unit 30a, and two first main circuit input wires P, N, and three second main circuit output wirings u, v, w connected to the second inverter unit 30b and two second main circuit input wirings P, N.

  One end of the first main circuit output wiring u, v, w is connected to the first inverter unit 30a, and the other end is a first connection terminal (connector connector) provided on the side wall 20f closest to the first inverter unit 30a. 50a. The first main circuit output wirings u, v, and w are respectively connected to the equipment wiring extending from the railcar 40 side at the position of the first connection terminal 50a.

One end of the second main circuit output wiring u, v, w is connected to the second inverter unit 30b, and the other end is a second connection terminal (connector connector) provided on the side wall 20e closest to the second inverter unit 30b. 50b. The second main circuit output wirings u, v, and w are respectively connected to the equipment wiring extending from the railcar 40 side at the position of the second connection terminal 50b.
The first and second main circuit output wirings u, v, w are arranged on the inner surface side of the ceiling wall 20a of the housing 20, and are routed along the ceiling wall.

  One end of the first main circuit input wirings P and N is connected to the first inverter unit 30a, and the other end is a third connection terminal (connection connector) provided on the side wall 20d of the housing 20 along the traveling direction A. 50c. One end of the second main circuit input wirings P and N is connected to the second inverter unit 30b, and the other end is connected to the third connection terminal 50c. The first and second main circuit input wirings P and N are arranged on the inner surface side of the ceiling wall 20a of the casing 20 and are connected to the first and second main circuit output wirings u, v, and w and the casing 20. It is routed to a position that does not intersect. The first and second main circuit input wirings P and N are respectively connected to the equipment wiring extending from the railcar 40 side at the position of the third connection terminal 50c.

  Other configurations of the control device 10 are the same as those in the first embodiment described above. In the second embodiment configured as described above, the same effects as those of the first embodiment described above can be obtained.

(Third embodiment)
FIG. 5 is a plan view of a railway vehicle control device according to the third embodiment as viewed from above, FIG. 6 is a plan view showing a wiring panel of the control device, and FIG. 7 shows a wiring panel mounting process. It is a side view of a control apparatus.

  As shown in FIG. 5, according to the third embodiment, the casing 20 of the control device 10 is formed in a size of a quadrilateral half type, and the first inverter unit 30 a is arranged in the equipment room in the casing. A first equipment room 24a, a second equipment room 24b in which the second inverter unit 30b is disposed, and a third equipment room (2 in which the high voltage circuit unit 34 is disposed adjacent to the first inverter unit 30a on the side wall 20c side. 24c, and a fourth equipment room (may be two or more equipment rooms) 24d in which the control unit 32 is disposed adjacent to the second inverter unit 30b on the side wall 20d side. In addition, a fifth device chamber 24e is provided between the first device chamber and the fourth device chamber, and a sixth device chamber 24f is provided between the second device chamber and the third device chamber.

  First and second connection terminals 50a and 50b are respectively provided in the central portions of the side walls 20e and 20f adjacent to the fifth and sixth equipment chambers 24e and 24f. The main circuit output wirings u, v, w for driving the three-phase AC motor output from the first and second inverter units 30a, 30b are connected to the first and second connection terminals 50a, 50b.

  According to the third embodiment, as shown in FIGS. 5 to 7, the control device 10 includes the first wiring panel 52a and the second wiring panel 52b attached to the ceiling wall 20a. The first wiring panel 52a is formed in a rectangular shape. On this first wiring panel, a part of the first main circuit output wirings u, v, w and a part of the first main circuit input wirings P, N are arranged in advance, A connection conductor 54 is attached. Similarly, the second wiring panel 52b is formed in a rectangular shape. On the second wiring panel, a part of the second main circuit output wirings u, v, and w and a part of the second main circuit input wirings P and N are arranged in advance. A connection conductor 54 is attached.

  The first wiring panel 52a and the second wiring panel 52b are attached to the ceiling wall 20a of the housing 20 in the fifth device chamber 24e and the sixth device chamber 24f. The first and second inverter units 30a and 30b are connected to the first and second wiring panels 52a and 52b by wiring, and the first and second connection terminals 50a and 50b are further connected by wiring. Has been.

The first wiring panels 52a and 52b are attached to the inner surface of the ceiling wall 20a. Further, as shown in FIG. 7, the first wiring panels 52a and 52b may be supported in an opening formed in the ceiling wall 20a so as to be attachable from above the ceiling wall. The first wiring panels 52a and 52b respectively constitute part of the ceiling wall 20a.
Other configurations of the control device 10 are the same as those in the first embodiment described above.

  According to the third embodiment configured as described above, main circuit input wiring and output wiring are connected in advance to the first and second wiring panels 52a and 52b, and these first and second wiring panels are connected. By incorporating 52a and 52b into the housing 20, it is possible to reduce the assembly work that has entered from the bottom wall side of the housing 20, and the assembly workability is improved. In addition, by adopting an optimized wiring configuration in which the main circuit output wiring and the input wiring do not intersect, the main circuit output wiring and the main circuit input wiring can be concentrated near the ceiling of the fifth equipment room and the sixth equipment room. In addition, the main circuit wiring can be shortened as much as possible, and the weight of the wiring can be reduced.

Further, by adopting a structure in which the first and second wiring panels 52a and 52b can be attached from above the control device 10, the main main circuit wiring can be attached without access from the bottom wall 20b side of the housing 20. Furthermore, workability is improved. Furthermore, by constituting a part of the ceiling wall 20a of the housing 20 by the first and second wiring panels 52a and 52b, it is not necessary to attach a ceiling force bar, and workability is further improved.
From the above, it is possible to obtain the control device 10 that can reduce the size and weight of the device by optimizing the main circuit wiring and improve the assembly workability.

Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the spirit of the invention. The embodiments may be used in combination with each other. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.
Hereinafter, the invention described in the scope of claims of the present application will be appended.
[1] A first inverter unit and a second inverter unit each having a box-shaped casing installed under the floor of a railway vehicle, a semiconductor element circuit for power conversion that drives an electric motor, and a cooler that cools the semiconductor element. And the first and second inverter units are arranged diagonally with respect to the center position of the casing in the casing, and the coolers of the first and second inverter units are arranged in the casing. A control device for a railway vehicle provided so as to protrude outward.
[2] A plurality of first main circuit output wires and a plurality of first main circuit input wires connected to the first inverter unit, and a plurality of second main circuit output wires and a plurality of wires connected to the second inverter unit. A second main circuit output wiring, and a connecting portion between the first and second main circuit output wiring and the equipment wiring is disposed on a side wall of the housing closest to the first and second inverter units, The control device for a railway vehicle according to [1], wherein the first and second main circuit input wirings are arranged in the housing so as not to intersect with the first and second main circuit output wirings.
[3] A control unit that controls switching of the semiconductor element circuits of the first and second inverter units, and a gate wiring that connects the control unit to the first and second inverter units. The accommodation chamber is arranged in the housing side by side with the first or second inverter unit, and the first and second main circuit input wirings are diagonally located with respect to the control unit with respect to the center of the housing. The control apparatus for a railway vehicle according to [2], which is mainly arranged in
[4] The casing includes a first wiring panel having a ceiling wall facing a floor of the railway vehicle, and a part of the first main circuit input wiring and the first main circuit output wiring are formed; 2 main circuit input wiring and a second wiring panel formed with a part of the second main circuit output wiring, and the first wiring panel and the second wiring panel are attached to the ceiling wall of the casing The control device for a railway vehicle according to [2] or [3].
[5] The railway according to [4], wherein the first wiring panel and the second wiring panel constitute a part of a ceiling wall of the casing, and are supported so as to be attachable from the ceiling side of the casing. A control device for a vehicle.
[6] The housing has a pair of side walls extending in the traveling direction of the railcar, and the cooler of the first inverter unit has a plurality of heat radiating fins extending outward from the one side wall. The control device for a railway vehicle according to any one of [1] to [5], wherein the cooler of the second inverter unit has a plurality of heat radiation fins exposed to the outside from the other side wall.

DESCRIPTION OF SYMBOLS 10 ... Control apparatus, 20 ... Housing | casing, 20a ... Ceiling wall, 20b ... Bottom wall,
20c, 20d, 20e, 20f ... sidewall, 30a ... first inverter unit,
30b ... second inverter unit, 32 ... control unit, 34 ... high voltage circuit unit,
38a, 38b ... cooler, 40 ... heat dissipation block, 42 ... heat dissipation fin,
52a ... 1st wiring panel, 52b ... 2nd wiring panel, 54 ... Connection conductor

Claims (6)

A box-shaped housing that is installed under the floor of the railway vehicle and has a ceiling wall and a bottom wall, a pair of side walls extending in the traveling direction of the railway vehicle, and a pair of side walls extending in a direction orthogonal to the traveling direction;
A first inverter unit and a second inverter unit each having a semiconductor element circuit for power conversion for driving an electric motor and a cooler for cooling the semiconductor element;
The first and second inverter units are arranged diagonally with respect to the center position of the casing in the casing, and the coolers of the first and second inverter units protrude outside the casing. provided,
A plurality of first main circuit output wirings and a plurality of first main circuit input wirings connected to the first inverter unit; a plurality of second main circuit output wirings connected to the second inverter unit; Main circuit input wiring, and
The connection portion between the first and second main circuit output wiring and the outfitting wiring is disposed on the side wall closest to the first and second inverter units of the housing, and the first and second main circuit input wiring are In the casing is disposed at a position that does not intersect the first and second main circuit output wiring,
A control unit that controls switching of the semiconductor element circuit of the first and second inverter units; and a gate wiring that connects the control unit to the first and second inverter units,
The control unit is arranged alongside the first or second inverter unit in the casing, and the first and second main circuit input wirings are diagonally positioned with respect to the center of the casing. A control device for a railway vehicle that is mainly disposed in a storage room . A box-shaped housing that is installed under the floor of the railway vehicle and has a ceiling wall and a bottom wall, a pair of side walls extending in the traveling direction of the railway vehicle, and a pair of side walls extending in a direction orthogonal to the traveling direction;
A first inverter unit and a second inverter unit each having a semiconductor element circuit for power conversion for driving an electric motor and a cooler for cooling the semiconductor element;
The first and second inverter units are arranged diagonally with respect to the center position of the casing in the casing, and the coolers of the first and second inverter units protrude outside the casing. Provided in
A plurality of first main circuit output wirings and a plurality of first main circuit input wirings connected to the first inverter unit; a plurality of second main circuit output wirings connected to the second inverter unit; Main circuit input wiring, and
The connection portion between the first and second main circuit output wiring and the outfitting wiring is disposed on the side wall closest to the first and second inverter units of the housing, and the first and second main circuit input wiring are In the casing is disposed at a position that does not intersect the first and second main circuit output wiring,
A control unit that controls switching of the semiconductor element circuit of the first and second inverter units; and a gate wiring that connects the control unit to the first and second inverter units,
The control unit is arranged alongside the first or second inverter unit in the housing, and a connection site between the first and second main circuit input wirings and the equipment wiring is the housing along the traveling direction. A control device for a railway vehicle arranged on the side wall of the body . A box-shaped housing that is installed under the floor of the railway vehicle and has a ceiling wall and a bottom wall, a pair of side walls extending in the traveling direction of the railway vehicle, and a pair of side walls extending in a direction orthogonal to the traveling direction;
A first inverter unit and a second inverter unit each having a semiconductor element circuit for power conversion for driving an electric motor and a cooler for cooling the semiconductor element;
The first and second inverter units are arranged diagonally with respect to the center position of the casing in the casing, and the coolers of the first and second inverter units protrude outside the casing. Provided in
A control unit for controlling switching of the semiconductor element circuit of the first and second inverter units;
For the railway vehicle, the control unit is disposed alongside the first or second inverter unit in the housing, and a high-voltage circuit unit is disposed diagonally to the control unit with respect to the center of the housing . Control device. The housing has a ceiling wall facing the floor of the railway vehicle,
A first wiring panel in which a part of the first main circuit input wiring and the first main circuit output wiring is formed, and a second in which a part of the second main circuit input wiring and the second main circuit output wiring are formed. A wiring panel, and
The control device for a railway vehicle according to claim 1, wherein the first wiring panel and the second wiring panel are attached to a ceiling wall of the housing.   5. The railcar according to claim 4, wherein the first wiring panel and the second wiring panel respectively constitute a part of a ceiling wall of the casing and are supported so as to be attachable from a ceiling side of the casing. Control device. The housing has a pair of side walls extending in the traveling direction of the rail vehicle,
The cooler of the first inverter unit has a plurality of heat radiating fins extending outward from one side wall of the pair of side walls,
The railcar control device according to any one of claims 1 to 5, wherein the cooler of the second inverter unit has a plurality of heat radiation fins exposed to the outside from the other side wall.

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