Frequency Converter Class

Abstract

A frequency converter class contains various types of frequency converters. A first type of frequency converters of the frequency converter class consists of: power electronics, a carrier element, and a housing element of a first housing element type that, in connection with the carrier element, forms a housing for the power electronics, and a second type of frequency converters of the frequency converter class consists of: the power electronics, the carrier element and a housing element of a second housing element type that, in connection with the carrier element, forms a housing for the power electronics.

Claims

1. to 12. (canceled)

13. A frequency converter class, comprising various types of frequency converters, wherein (i) a first type of frequency converters in the frequency converter class comprises: power electronics, a carrier element, and a housing element of a first housing element type which, in combination with the carrier element, forms a housing for the power electronics, and (ii) a second type of frequency converters in the frequency converter class comprises: the power electronics, the carrier element, and a housing element of a second housing element type which, in combination with the carrier element, forms a housing for the power electronics.

14. The frequency converter class according to claim 13, wherein the housing element of the first housing element type is configured such that the frequency converter of the first type assumes a first protection rating, and the housing element of the second housing element type is configured such that the frequency converter of the second type assumes a second protection rating, which differs from the first protection rating.

15. The frequency converter class according to claim 14, wherein the first protection rating is IP 66, and the second protection rating is IP 31.

16. The frequency converter class according to claim 13, wherein the housing element of the first housing element type forms a first volume, and the housing element of the second housing element type forms a second volume, which differs from the first volume.

17. The frequency converter class according to claim 13, wherein (iii) a third type of frequency converters in the frequency converter class comprises: the power electronics, the carrier element, and a housing element of a third housing element type which, in combination with the carrier element, forms a housing for the power electronics.

18. The frequency converter class according to claim 17, wherein the housing element of the first housing element type is configured such that the frequency converter of the first type assumes a first protection rating, the housing element of the second housing element type is configured such that the frequency converter of the second type assumes a second protection rating, which differs from the first protection rating, and the housing element of the third housing element type forms a volume which differs from a volume formed by the first housing element type and/or from a volume formed by the second housing element type.

19. The frequency converter class according to claim 13, wherein all types of frequency converters in the frequency converter class comprise a cover element, by which a terminal compartment of the frequency converter is closed.

20. The frequency converter class according to claim 19, wherein the cover element is configured with a wedge-shaped design.

21. The frequency converter class according to claim 13, wherein one type of frequency converters in the frequency converter class comprises a grid system disconnector.

22. The frequency converter class according to claim 13, wherein the carrier element forms a cooling body.

23. The frequency converter class according to claim 13, wherein the carrier element comprises at lease one fastener, by which a respective frequency converter is fastenable to an associated site of attachment in a mechanically detachable manner.

24. The frequency converter class according to claim 13, wherein all types of frequency converters in the frequency converter class comprise a location well and an interface arranged in said location well, wherein an external control device is insertable in the location well, and is couplable via the interface to the respective frequency converter, for purposes of data exchange.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG. 1 is a perspective representation of a frequency converter of a first type in a frequency converter class;

[0020] FIG. 2 is a perspective representation of a frequency converter of a second type in a frequency converter class;

[0021] FIG. 3 is a perspective representation of a frequency converter of a third type in a frequency converter class;

[0022] FIG. 4 is a perspective representation of a frequency converter of the first, second or third type with the housing element removed, wherein a safety module is plugged onto a circuit board of the frequency converter; and

[0023] FIG. 5 is a perspective representation of the frequency converter according to FIG. 4, with no safety module plugged in.

DETAILED DESCRIPTION OF THE DRAWINGS

[0024] FIG. 1 is a perspective representation of a frequency converter 1 of a first type in a frequency converter class.

[0025] The first type of frequency converter in the frequency converter class is comprised of power electronics 4, for example a three-phase inverter, a carrier element 5 of metal construction, which simultaneously forms a cooling body, and a housing element 6 of a first housing element type which, in combination with the carrier element 5, forms a housing 7 for the power electronics 4.

[0026] The frequency converter 1 assumes a protection rating according to IP 66.

[0027] The frequency converter 1 comprises a removable wedge-shaped cover element 12, by means of which a terminal compartment 19 of the frequency converter 1 can be closed. Where the cover element 12 is removed, terminals of the frequency converter 1 are accessible such that, for example, cables which are led into the terminal compartment 19 via cable infeed openings 18 can be connected to the terminals.

[0028] The carrier element 5 comprises fasteners 17, by means of which the frequency converter 1 can be fastened to its site of attachment in a mechanically detachable manner.

[0029] An external control device 16 in the form of a parameterization device, which is coupled to the frequency converter 1 via an interface 15 for the purposes of data exchange, is inserted in a location well 14 which is formed in the housing element 6, and in which the interface 15 of the frequency converter 1 is arranged—c.f. FIG. 2.

[0030] FIG. 2 shows a perspective representation of a frequency converter 2 of a second type in the frequency converter class and in which, for the purposes of description, an external control device 16 inserted in the location well 14 has been omitted.

[0031] The frequency converter 2 of the second type preferably differs from the frequency converter 1 of the first type only with respect to the housing element 8 or housing 9 thereof, which comprises slot-shaped openings 20, whereas the housing element 6 is comprised of solid segments 21. A respective longitudinal extension of the slot-shaped openings 10 or the segments 21, with the frequency converter 1 or 2 installed in its intended orientation, forms an angle of approximately 25 degrees to the horizontal.

[0032] The frequency converter 2 of the second type assumes a protection rating according to IP 31, whereas the frequency converter 1 of the first type assumes a protection rating according to IP 66.

[0033] In the frequency converter 1 of the first type, having a protection rating according to IP 66, for the achievement of a higher protection rating, seals can additionally be provided between the housing element 6 and the carrier element 5.

[0034] FIG. 3 shows a perspective representation of a frequency converter 3 of a third type in the frequency converter class.

[0035] The frequency converter 3 of the third type differs from the frequency converters 1 and 2 of the first or second types, inter alia, with respect to the housing element 10 thereof or the housing 11 thereof, which is of a different volume to the housing elements 6 and 8, which are of equal volume.

[0036] By way of distinction from the frequency converters 1 and 2, the frequency converter 3 comprises a grid system disconnector 13 for isolation from the grid. The frequency converter 3 can assume a protection rating according to IP 66.

[0037] Additionally to the cable infeed openings 18, further openings can be provided in the housing elements 6, 8 and 10, in a snap-out arrangement, in order to permit further types of cable to be led to the housing. Only grid connection and motor connection openings, for example, may be provided as standard.

[0038] The housing elements 6, 8, 10 are detachably fastened to the carrier element 5, for example by means of screws.

[0039] The cover element 12 can also be detachably fastened to the housing elements 6, 8, 10 by means of screws.

[0040] The frequency converter class according to the invention features a high proportion of matching components, including identical power electronics and carrier elements. In essence, the only distinctions are associated with the different housing elements, by means of which the frequency converters are differentiated or classified. This permits cost-effective production and warehousing, with a simultaneously high degree of flexibility.

[0041] With reference to FIG. 3, the cable infeed openings 18 can be closed by means of associated sealing plugs 22, in order to achieve the requisite fluid-tightness or protection rating.

[0042] Sealing plugs 22 can also be employed in conjunction with the embodiment represented in FIG. 1.

[0043] FIG. 4 shows a perspective representation of a frequency converter 23 of the first, second or third type, with the housing element 6, 8 or 10 removed. The frequency converter 23 comprises a circuit board 26, onto which a safety module 24 is plugged. The plugged-in safety module 24 permits the fulfilment by the frequency converter 23 of specific requirements for functional security.

[0044] FIG. 5 shows a perspective representation of the frequency converter 23 according to FIG. 4, with the plugged-in safety module 24 removed, as a result of which the behavior of the frequency converter 23 with respect to functional security is altered.

[0045] As represented in FIG. 5, the circuit board 26 comprises tabs 25, onto which the safety module 24, as represented in FIG. 4, can be plugged.

[0046] The power electronics 4 can be arranged on the circuit board 26.