Assembly assembly for frequency converter

Abstract

The invention relates to a frequency converter assembly kit (100), comprising a base unit (1) and an expansion unit (6) which can be plugged onto the base unit (1), said base unit comprising:-a first plug connector by means of which the base unit (1) can be connected to an alternating current network; -power electronics; and a heat sink (4) for cooling the power electronics, wherein the heat sink (4) has a coupling element; the expansion unit has: a connection (7) by means of which the expansion unit (6) can be connected to an alternating current network; -a first plug connector for forming a plug connection with a first plug connector of the base unit (1); and-a housing element, the housing element having a coupling element,-the coupling element of the base unit and the coupling element of the expansion unit (6) being shaped in such a way that they engage one another when the expansion unit (6) is plugged onto the base unit (1).

Description

Technical Field

[0001] The invention relates to a frequency converter assembly kit and a frequency converter formed from the frequency converter assembly kit, which can be used as flexibly as possible, in particular with regard to their connections. Summary of the invention

[0002] The frequency converter assembly kit has a basic unit which has basic functions. The basic unit can be used as a frequency converter with a basic range of functions without expansion.

[0003] The basic unit has a first, for example 3-pin, 4-pin or 5-pin plug-in connector, by means of which the basic unit can be connected to a three-phase AC power supply system, for example.

[0004] The basic unit also has power electronics, which are designed, for example, to conventionally generate a control voltage for a three-phase AC motor. For this purpose, the power electronics can have, for example, a B6 bridge or the like.

[0005] The base unit also has a cooling body for cooling the power electronics. The cooling body can, for example, have outwardly directed cooling fins which extend at an angle of, for example, 45 degrees relative to the longitudinal axis of the base unit. The cooling body has a plurality of, for example, three coupling elements.

[0006] The frequency converter assembly kit also features an expansion unit that can be plugged onto the base unit.

[0007] The expansion unit has, for example, a 3-pin, 4-pin or 5-pin connection, by means of which the expansion unit can be connected to an AC power supply system.

[0008] The expansion unit has a first plug connector which is used to form a plug connection with a first plug connector of the base unit.

[0009] The expansion unit further comprises a housing element, wherein the housing element comprises a plurality of (eg three) coupling elements.

[0010] The coupling elements of the base unit and the coupling elements of the extension unit are shaped so that they engage with each other when the extension unit is plugged onto the base unit. The coupling elements of the base unit and the coupling elements of the extension unit interact so that they allow the extension unit to be plugged onto the base unit only in an orientation relative to each other that is provided for this purpose. Furthermore, the coupling elements of the base unit and the coupling elements of the extension unit mechanically fix the units relative to each other after plugging.

[0011] In one embodiment, the coupling element of the base unit and the coupling element of the extension unit are shaped such that they form a dovetail connection.

[0012] In one embodiment, the coupling element of the base unit forms a tongue and the coupling element of the expansion unit forms a correspondingly shaped, in particular trapezoidal, groove.

[0013] In one embodiment, the base unit has a second plug connector, wherein contacts of the second plug connector within the base unit are electrically connected to corresponding contacts of the first plug connector of the base unit in order to connect a plurality of frequency converters in a daisy chain configuration to the AC grid.

[0014] In one embodiment, the first plug connector of the base unit is female and the second plug connector of the base unit is male.

[0015] In one embodiment, the extension unit has, for example, a rotatable operating switch, wherein in a first switch position of the operating switch, the connection of the extension unit is electrically connected to a first plug connector of the extension unit in order to connect a plugged-in basic unit to an AC power grid, and wherein in a second switch position of the operating switch, the connection of the extension unit is electrically disconnected from the first plug connector of the extension unit in order to disconnect the plugged-in basic unit from the AC power grid.

[0016] In one embodiment, the expansion unit has a second plug connector, wherein contacts of the second plug connector inside the expansion unit are electrically connected to corresponding contacts of the connector of the expansion unit in order to connect a plurality of frequency converters in a daisy chain configuration to the AC grid.

[0017] In one embodiment, the connector of the extension unit is designed as a female plug connector and the second plug connector of the extension unit is male.

[0018] In one embodiment, the frequency converter assembly kit has different types of expansion units, which differ in the type of their connections. A first type of expansion unit can, for example, have connections in the form of plug connectors, and a second type of expansion unit can, for example, have connections in the form of conventional spring-pull terminals or screw terminals.

[0019] The frequency converter according to the invention is formed either exclusively from a base unit or from a base unit and an expansion unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be described in detail below with reference to the accompanying drawings. In this case:

[0021] Figure 1 shows a perspective view of a frequency converter assembly kit exemplarily having a base unit and an expansion unit;

[0022] Figure 2 shows a perspective view of a base unit;

[0023] Figure 3 a perspective view showing an opened base unit; and

[0024] Figure 4 A perspective view of an extension unit is shown. DETAILED DESCRIPTION

[0025] Figure 1 A perspective view of a frequency converter assembly kit 100 is shown, which exemplarily has a base unit 1 and an expansion unit 6 plugged onto the base unit 1. For reasons of illustration, only a single base unit 1 and a single expansion unit 6 are shown. It is understood that the frequency converter assembly kit 100 may contain more units 1 or 6 than the units 1 or 6 shown.

[0026] Figure 2 A perspective view of the base unit 1 is shown and Figure 3 A perspective view of an opened basis unit 1 is shown.

[0027] Reference Figure 2 and Figure 3 , the base unit 1 has a first plug connector 2, by means of which the base unit 1 can be connected to a three-phase AC network. In addition, the base unit 1 has a second plug connector 11, wherein the contacts 11a of the second plug connector 11 inside the base unit 1 are electrically connected to the corresponding contacts 2a of the first plug connector 2 of the base unit 1. The first plug connector 2 of the base unit 1 is female and the second plug connector 11 of the base unit 1 is male. By means of the plug connectors 2 and 11, a plurality of base units 1 can be connected to the AC network in a daisy chain configuration.

[0028] The basic unit 1 comprises power electronics 3 and a heat sink 4 for cooling the power electronics 3 , wherein the heat sink 4 comprises a coupling element 5 , the function of which will be described below.

[0029] The base unit has a plug connector 14 for connecting a three-phase electric motor.

[0030] Figure 4 The expansion unit 6 is shown in a perspective view. The expansion unit 6 has a connection 7 in the form of a female plug connector, by means of which the expansion unit 6 can be connected to an AC power supply network.

[0031] The expansion unit 6 further comprises a first plug connector 8 which is used to form a plug connection with the first plug connector 2 of the base unit 1 .

[0032] The expansion unit 6 further comprises a second plug connector 13 , wherein contacts 13 a of the second plug connector 13 inside the expansion unit 6 are electrically connected to corresponding contacts 7 a of the connection 7 or the plug connector of the expansion unit 6 .

[0033] The connection 7 of the extension unit 6 is designed as a female plug connector and the second plug connector 13 of the extension unit 6 is male.

[0034] The extension unit 6 further comprises a housing element 9, wherein the housing element 9 comprises a coupling element 10. The coupling element 5 of the base unit 1 and the coupling element 10 of the extension unit 6 are shaped such that they engage with one another when the extension unit 6 is plugged onto the base unit 1.

[0035] The coupling element 5 of the base unit 1 and the coupling element 10 of the expansion unit 6 are shaped so that they form a dovetail guide during plugging and a dovetail connection after plugging. The coupling element 5 of the base unit 1 forms a tongue and the coupling element 10 of the expansion unit 6 forms a correspondingly shaped trapezoidal groove.

[0036] Reference Figure 1 The expansion unit 6 has an operating switch 12 , wherein in a first switch position of the operating switch 12 , the plug connectors 7 and 13 of the expansion unit 6 are electrically connected to the first plug connector 8 of the expansion unit 6 , so that the basic unit 1 is connected to the AC power grid.

[0037] In the second switch position of the operating switch 12 , the plug-in connectors 7 and 13 of the extension unit 6 are electrically disconnected from the first plug-in connector 8 of the extension unit 6 .

[0038] The frequency converter assembly kit 100 can have different types of expansion units 6 which differ, for example, in the type of their connections 7 and / or 13 .

[0039] If a basic range of functions is sufficient, the frequency converter is formed solely from the basic unit 1 . If an extended range of functions is necessary, the frequency converter is formed from the basic unit 1 and the extension unit 6 .

Claims

1. A frequency converter assembly kit (100), comprising: - a base unit (1) having: a first plug-in connector (2), by means of which the base unit (1) can be connected to an AC power grid; - power electronics (3); and - a cooling body (4) for cooling the power electronic device (3), wherein the cooling body (4) has a coupling element (5); - an expansion unit (6) which can be plugged onto the base unit (1), comprising: - a connection (7), by means of which the expansion unit (6) can be connected to the AC power grid; - a first plug connector (8) for forming a plug connection with the first plug connector (2) of the base unit (1); as well as - a housing element (9), wherein the housing element (9) has a coupling element (10), The coupling element (5) of the base unit (1) and the coupling element (10) of the extension unit (6) are shaped such that they engage with one another when the extension unit (6) is plugged onto the base unit (1).

2. The frequency converter assembly kit (100) according to claim 1, characterized in that: The coupling element (5) of the base unit (1) and the coupling element (10) of the expansion unit (6) are shaped such that they form a dovetail connection.

3. The frequency converter assembly kit (100) according to any one of the preceding claims, characterized in that The coupling element (5) of the base unit (1) forms a tongue and the coupling element (10) of the expansion unit (6) forms a correspondingly shaped groove, in particular a trapezoidal groove.

4. The frequency converter assembly kit (100) according to any one of the preceding claims, characterized in that The base unit (1) has a second plug connector (11), wherein the contacts (11a) of the second plug connector (11) inside the base unit (1) are electrically connected to corresponding contacts (2a) of the first plug connector (2) of the base unit (1).

5. The frequency converter assembly kit (100) according to claim 4, characterized in that: The first plug connector (2) of the base unit (1) is female and the second plug connector (11) of the base unit (1) is male.

6. The frequency converter assembly kit (100) according to any one of the preceding claims, characterized in that - The expansion unit (6) has an operating switch (12), wherein in a first switch position of the operating switch (12), the connection (7) of the expansion unit (6) is electrically connected to the first plug connector (8) of the expansion unit (6), and wherein in a second switch position of the operating switch (12), the connection (7) of the expansion unit (6) is electrically disconnected from the first plug connector (8) of the expansion unit (6).

7. The frequency converter assembly kit (100) according to any one of the preceding claims, characterized in that The expansion unit (6) has a second plug connector (13), wherein a contact portion (13a) of the second plug connector (13) inside the expansion unit (6) is electrically connected to a corresponding contact portion (7a) of the connector (7) of the expansion unit (6).

8. The frequency converter assembly kit (100) according to claim 7, characterized in that: The connection (7) of the expansion unit (6) is designed as a female plug connector and the second plug connector (13) of the expansion unit (6) is male.

9. The frequency converter assembly kit (100) according to any one of the preceding claims, characterized in that The frequency converter assembly kit (100) has different types of extension units (6) which differ in the type of their connections (7).

10. A frequency converter, characterized in that: The frequency converter is formed by a base unit (1) of a frequency converter assembly kit (100) according to any one of the preceding claims or by a base unit (1) of a frequency converter assembly kit (100) according to any one of the preceding claims and an expansion unit (6).

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