FR2772995A1 - CONNECTION AND DETECTION MODULE FOR A CURRENT CONVERTER APPARATUS - Google Patents

Abstract

Connection and detection module 1 for a current converter device, comprising a fixing plate 2 on the front side of which are arranged all the necessary power connections 3 and on the rear side of which are arranged the corresponding internal connections of the connections power, module 1 being equipped with all current transformers 4, voltage transformers 5 as well as signal transmission line connectors 8 necessary for the operation of the converter device, and direct electrical connections 12 being provided between the power connections, current and voltage transformer connections as well as signal transmission line connectors.Application: for example to traction converters for rail vehicles.

Description

CONNECTION AND DETECTION MODULE FOR AN APPARATUS

CURRENT CONVERTER

  The invention relates to a connection and detection module intended for a current converter apparatus and which can be used for example for traction current converters of electric railway vehicles as well as for converters in industry. In the case of current converter devices, it is generally usual to arrange the power connections (such as power connections and load connections) on different sides of the device. As a result, the corresponding current and voltage transformers for obtaining important measurement values for operating regulation are also mounted on different sides of the device. As a result, it is necessary to assemble a multitude of components such as supports, insulating components, parts of power lines, mechanical load-bearing elements, connectors etc. in a way

  distributed inside the converter device itself

  even. This involves considerable assembly work and

therefore expensive.

  The object of the present invention is to provide a connection and detection module for a current converter device, module on which the components necessary for connection and detection are grouped. This object is achieved, according to the invention, by a connection and detection module for a current converter device, comprising a fixing plate on the front side (front) of which are arranged all the necessary power connections and on the rear side of which the corresponding internal connections of the power connections are arranged, the connection and detection module being equipped with all the current transformers and voltage transformers as well as connectors for signal transmission lines necessary for the operation of the current converter device, direct electrical connections being provided between the power connections, the connections of the current and voltage transformers and

  connectors for signal transmission lines.

  The advantages provided by the invention consist in particular in obtaining a very compact module, with deep integration, which serves as a direct and unique connecting element and interface between the external power connections and the cable bars. internal of the current converter. Intermediate components including intermediate wiring and additional mechanical load-bearing elements are no longer necessary for

  inside the current converter device.

  Integration allows reduction of volume, weight and assembly work. Finally, this results in a considerable reduction in cost. Since the connection and detection module according to the invention is designed in the form of an essentially rigid element, it benefits from very high mechanical strength and insensitivity to vibrations. Another advantage of the connection and detection module according to the invention consists in the fact that all the power connections of the current converter device, for example the power connections, the load connections and the control connections brakes, are accessible from the same side. This simplifies the possible assembly and exchange (repair) of the converter device inside a plant,

  for example inside a railway vehicle.

  Preferably, the direct electrical connections are made using electrical connection bars which are integrated into the fixing plate itself, being electrically isolated, the current transformers, voltage transformers and connectors of transmission lines of signals being arranged directly on the

fixing plate.

  Direct electrical connections can also be made by a circuit plate attached to the fixing plate and connected to the latter, current transformers, voltage transformers as well as connectors for signal transmission lines.

  being arranged directly on the circuit board.

  Current transformers and / or transformers

  tension dies can be connected by screws to the fixing plate or be integrated by molding to the fixing plate, the fixing plate being provided in the latter case with collars or flanges forming receiving cavities

transformer cores.

  Current transformers and / or transforma-

  voltage sensors can also be connected to the plate

of circuit.

  It is also possible to provide on the module at least one crossing for optical fibers. In addition, the fixing plate can be provided, on the rear side, with at least one support strip for the

cable guide.

  The invention will be described below in more detail & with the aid of several exemplary embodiments illustrated by the appended drawings, in which: FIG. 1 is a view on the front side of the fixing plate of a first variant the connection and detection module; Figure 2 is a view on the narrow side (edge) of the connection and detection module according to the first variant; Figure 3 is a view on the front side of the fixing plate of the connection and detection module according to a second variant; Figure 4 is a view on the rear side of the fixing plate according to the first or the second variant; Figure 5 is a perspective view of a

third variant.

  In Figure 1, there is shown a view on the front side of the fixing plate 2 of a module

  connection and detection 1 according to a first variant.

  The mounting plate has an elongated rectangular shape. Several power connections 3, eight in number in the example shown, are arranged in a row. These power connections 3 consist of the supply connections (direct or alternating voltage), the load connections (direct or alternating voltage) and, if necessary, the braking control connections. Current transformers 4 are provided for part of the power connections 3, namely for three of these power connections in the example shown. The feed-through axis of the power connection 3 acts as a "primary winding". In addition, a voltage transformer 5 is arranged on the front side of the fixing plate 2. The secondary connections 6 of the current transformers 4 and the secondary connections 7 of the voltage transformer 5 are also visible. These secondary connections 6, 7 are connected, passing by electrical connection bars 12 embedded in the fixing plate 2 and shown in dashes to connectors of signal transmission lines 8, the latter being accessible

  from the front side of the mounting plate 2.

  According to the first variant as well as according to the other variants, a connector for signal transmission lines 8 is preferably provided for transmitting the signals of the current and voltage transformers for regulation. Another connector for signal transmission lines is used to supply the tripping units for semiconductor switches and to report back, to the regulation, the state of the semiconductor switches. Another connector for signal transmission lines can be used for the

  transmission of the momentary temperature of the semi-

conductors to regulation.

  For undisturbed transmission of

  signals, effective shielding is of great importance.

  This is the reason why the signals are transmitted by screened lines and the current and voltage transformers are provided with screens.

  suitable, for example by metallization.

  Holes in the fixing plate serve as bushings 11 for optical fibers or bundles of

optical fiber.

  FIG. 2 represents a view on the narrow side (edge) of the connection and detection module 1 according to a first variant. We recognize the power connections 3, the current transformers 4, the voltage transformer 5, the secondary connections 7 of the voltage transformer and the signal transmission line connectors 8. The electrical connection bars 12 integrated in the plate fixing 2 are again indicated in dashes. Reference 13 designates the internal connections of the power connections 3. A support strip 14 on the rear side of the plate

  fixing 2 simplifies internal wiring.

  FIG. 3 represents a view on the front side of the fixing plate 2 ′ of a connection and detection module 1 ′ according to a second variant. This second variant is distinguished by a great insensitivity to vibrations. While according to the first variant according to Figures 1, 2, the current and voltage transformers are fixed by screws to the fixing plate, in the second variant, the current transformers 4 'and the voltage transformer 5' are integral of the fixing plate 2 'integrated into the latter by molding. To this end, the fixing plate 2 ′ comprises, on the front side, collars or flanges 15 constituting cavities for receiving the transformer cores. Transformer housings that are otherwise common are therefore superfluous. After establishing the contacts of the secondary connections 6 'of the current transformers 4' as well as the primary connections 16 and the secondary connections 7 'of the voltage transformer 5', the cavities can be filled with molding resin up to the edge of the collars 15 , which means that the transformers are found

  integrated into the fixing plate 2 '.

  Figure 4 is a perspective view on the rear side of the fixing plate 2, valid for both variants. We recognize the bushings 11 for optical fibers, the internal connections 13 of the power connections and the support strip 14 for the internal wiring. FIG. 5 is a perspective view of a third variant of the connection and detection module 1 ", in which a circuit board 9 carrying the current transformers 4" and the connectors of signal transmission lines 8 "is attached on the 3 "power connections and connected to the 2" fixing plate. The multi-layer circuit plate 9, shielded against stray electromagnetic radiation, establishes the necessary electrical connections between the 4 "current transformers, the voltage transformer "and 8" signal line connectors.

Claims (8)

  1. Connection and detection module for a current converter device, characterized in that it comprises a fixing plate (2, 2 ', 2 ") on the front side of which are arranged all the power connections ( 3, 3 ', 3 ") required and on the rear side of which are arranged the corresponding internal connections (13) of the power connections, the connection and detection module (1, 1', 1") being equipped with all current transformers (4, 4 ', 4 "), voltage transformers (5, 5', 5") as well as connectors for signal transmission lines (8, 8 ', 8 ") necessary for the operation of the converter apparatus, and direct electrical connections being provided between the power connections, the connections of the current and voltage transformers as well as the   signal transmission line connectors.   2. Connection and detection module according to claim 1, characterized in that the direct electrical connections are made using electrical connection bars (12) which are integrated into the fixing plate (2) being electrically isolated, the current transformers (4, 4 '), voltage transformers (5, 5') as well as connectors of signal transmission lines (8, 8 ') being arranged directly on the fixing plate (2, 2 ').   3. Connection and detection module according to claim 1, characterized in that the direct electrical connections are made by a circuit plate (9) attached to the fixing plate (2 ") and connected to the latter, the transformers current (4 "), voltage transformers (5") as well as connectors for signal transmission lines (8 ") being arranged   directly on the circuit board (9).   4. Connection and detection module according to   Claims 1 and 2, characterized in that the   current transformers (4) and / or transformers   tension (5) are fixed by screws to the fixing plate (2).   5. Connection and detection module according to   Claims 1 and 2, characterized in that the   current transformers (4 ') and / or voltage transformers (5') are incorporated by molding in the fixing plate (2 '), the fixing plate being provided with collars or flanges (15) constituting receiving cavities for transformer cores.   6. Connection and detection module according to   Claims 1 and 3, characterized in that the   current transformers (4 ") and / or transformers   voltage (5 ") are connected to the circuit board (9).   7. Next connection and detection module   any one of claims 1 to 6, characterized by   the fact that it comprises at least one crossing (11) for optical fiber.   8. Next connection and detection module   any one of claims 1 to 7, characterized by   the fact that the fixing plate (2, 2 ') has on the rear side at least one support strip (14) for wiring.