Frequency converter unit |
|||||||
申请号 | US13441423 | 申请日 | 2012-04-06 | 公开(公告)号 | US09231490B2 | 公开(公告)日 | 2016-01-05 |
申请人 | Mika Silvennoinen; Mika Vartiainen; Jani Hakala; | 发明人 | Mika Silvennoinen; Mika Vartiainen; Jani Hakala; | ||||
摘要 | A frequency converter unit includes a unit body, input bus bar means and output bus bar means. The input bus bar means have a plurality of input side bus bars spaced apart in a first direction, and the output bus bar means have a plurality of output side bus bars spaced apart in the first direction, which is perpendicular to an installation direction of the frequency converter unit. Each of the plurality of input side bus bars and the plurality of output side bus bars includes an aperture configured to connect the bus bar to a counterpart contact in a frame with a bolt-nut connection. | ||||||
权利要求 | What is claimed is: |
||||||
说明书全文 | This application claims priority under 35 U.S.C. §119 to European Patent Application No. 11161601.7 filed in Europe on Apr. 8, 2011, the entire content of which is hereby incorporated by reference in its entirety. The present disclosure relates to a frequency converter unit. A known frequency converter unit includes cable terminals for power supply cabling and load cabling on a front side wall thereof. The known frequency converter unit is adapted to be installed in a frame having power supply cabling and load cabling on a front wall thereof. The power supply cabling is fixedly connected to the cable terminals for power supply cabling on the front side wall of the known frequency converter unit. Similarly, the load cabling is fixedly connected to the cable terminals for load cabling on the front side wall of the known frequency converter unit. One of the drawbacks associated with the above described known frequency converter unit is that there are considerable difficulties in installing the known frequency converter unit in a frame having the power supply cabling and load cabling on a side wall thereof or on a back wall thereof. An exemplary embodiment of the present disclosure includes a frequency converter unit which includes a unit body, input bus bar means having a plurality of input side bus bars protruding from the unit body and configured to be connected to a power supply, and output bus bar means having a plurality of output side bus bars protruding from the unit body and configured to be connected to a load. The frequency converter unit is configured to be installed in a frame in an installed position, where the installation of the frequency converter unit into the frame is configured to be carried out in an installation direction. The plurality of input side bus bars are spaced apart in a first direction, and the plurality of output side bus bars are spaced apart in the first direction, which is perpendicular to the installation direction. Each of plurality of input side bus bars and the plurality of output side bus bars includes an aperture configured to connect the bus bar to a counterpart contact in the frame with a bolt-nut connection. An exemplary embodiment of the present disclosure provides a frequency converter unit which includes a unit body, input bus bar means having a plurality of input side bus bars protruding from the unit body and configured to be connected to a power supply, and output bus bar means having a plurality of output side bus bars protruding from the unit body and configured to be connected to a load. The frequency converter unit is configured to be installed in a frame in an installed position, where the installation of the frequency converter unit into the frame is configured to be carried out in an installation direction. The plurality of input side bus bars are spaced apart in a first direction, and the plurality of output side bus bars are spaced apart in the first direction, which is perpendicular to the installation direction. Each of the plurality of input side bus bars and the plurality of output side bus bars includes an aperture configured to connect the bus bar to a counterpart contact in the frame with a bolt-nut connection. In addition, each of the plurality of input side bus bars and the plurality of output side bus bars is configured to form an electrical contact with a blade receiving counterpart contact in the frame. In the following, additional refinements, advantages and features of the present disclosure will be described in greater detail by means of exemplary embodiments with reference to the attached drawings, in which: Exemplary embodiments of the present disclosure provide a frequency converter unit which can easily be installed in a frame having the power supply cabling and load cabling on a side wall thereof. An exemplary embodiment of the present disclosure includes a frequency converter unit which includes a unit body, input bus bar means having a plurality of input side bus bars protruding from the unit body and configured to be connected to a power supply, and output bus bar means having a plurality of output side bus bars protruding from the unit body and configured to be connected to a load. The frequency converter unit is configured to be installed in a frame in an installed position, where the installation of the frequency converter unit into the frame is configured to be carried out in an installation direction. The plurality of input side bus bars are spaced apart in a first direction, and the plurality of output side bus bars are spaced apart in the first direction, which is perpendicular to the installation direction. Each of plurality of input side bus bars and the plurality of output side bus bars includes an aperture configured to connect the bus bar to a counterpart contact in the frame with a bolt-nut connection. In accordance with an exemplary embodiment, each of the plurality of input side bus bars and the plurality of output side bus bars is configured to form an electrical contact with a blade receiving counterpart contact in the frame. Exemplary embodiments of the present disclosure are based on the idea of providing a frequency converter unit with input side bus bars which are spaced apart in a first direction, and with output side bus bars which are spaced apart in the first direction, where the first direction is perpendicular to installation direction of the frequency converter unit. An advantage of the frequency converter unit of the present disclosure is that the frequency converter unit may be installed in several different positions, wherein a power supply cabling and load cabling may be provided on different sides of a frame in which the frequency converter unit is installed. In accordance with an exemplary embodiment, bus bars that are connected to a direct voltage intermediate circuit of the frequency converter unit may be situated adjacent bus bars configured to be connected to a corresponding phase conductors of a three-phase load. In this embodiment, bus bars configured to be connected to an external brake resistor are situated adjacent bus bars configured to be connected to corresponding phase conductors of a three-phase power supply. In this embodiment, bus bars configured to be connected to an external brake resistor would be categorized as input side bus bars because of their location. Further, bus bars that are connected to a direct voltage intermediate circuit of the frequency converter would be categorized as output side bus bars because of their location. A frequency converter unit according to this alternative embodiment could look exactly like the frequency converter unit of Both the input side bus bars 41a, 41b, 41c, 41d, 41e and the output side bus bars 42a, 42b, 42c, 42d, 42e are located on a bus bar side wall 404 of the unit body 40. This enables connecting both power supply cabling and load cabling on a same side of the frequency converter unit 4. The frequency converter unit 4 includes a first user interface position 481 on a first side wall 401 of the unit body 40, where the first side wall 401 extends perpendicular with respect to the bus bar side wall 404. The frequency converter unit 4 also includes a second user interface position 482 on a second side wall 402 of the unit body 40, where the second side wall 402 extends perpendicular with respect to the bus bar side wall 404 and parallel with respect to the first side wall 401. Each of the user interface positions are configured to receive a user interface unit for controlling the frequency converter unit 4. There is a first handle position 51 on the first side wall 401 of the unit body 40. A handle 55 is received in the first handle position 51 for moving the frequency converter unit 4. The frequency converter unit 4 also includes a second handle position 52 on the second side wall 402 of the unit body 40. The second handle position 52 is configured to receive a handle for moving the frequency converter unit 4. The input cabling panel 21 is configured to electrically connect the input bus bar means 41 of the frequency converter unit 4 to the power supply. The output cabling panel 22 is configured to electrically connect the output bus bar means 42 of the frequency converter unit 4 to the load. The input cabling panel 21 includes input contacts 21a, 21b, 21c, 21d, 21e configured to be connected to the input side bus bars 41a, 41b, 41c, 41d, 41e of the frequency converter unit 4. The output cabling panel 22 includes output contacts 22a, 22b, 22c, 22d, 22e configured to be connected to the output side bus bars 42a, 42b, 42c, 42d, 42e of the frequency converter unit 4. The input cabling panel may include cable terminals for input cables. The output cabling panel may include cable terminals for output cables. The frequency converter unit 4 is configured to be installed in the frame 2 in an installed position depicted in In the installed position, the input side bus bars 41a, 41b, 41c, 41d, 41e are adjacent to the input contacts 21a, 21b, 21c, 21d, 21e, respectively, and the output side bus bars 42a, 42b, 42c, 42d, 42e are adjacent to the output contacts 22a, 22b, 22c, 22d, 22e, respectively. The input side bus bars may be secured to the input contacts by bolts and nuts to ensure an appropriate electrical connection. Similarly, the output side bus bars may be secured to the output contacts by bolts and nuts to ensure an appropriate electrical connection. Also, other detachable connecting means may be used instead of bolts and nuts. Use of detachable connecting means is not necessary in every embodiment. Each of the input side bus bars and the output side bus bars shown in In The frequency converter unit 4 is configured to be installed in four different types of frames. The frame 2 depicted in A left wall of a frame is parallel to a right wall of the frame. A back wall of a frame is parallel to a front wall of the frame. Expressions left wall, right wall, front wall and back wall of a frame refer to the installation direction in the illustrated embodiment. The left wall and the right wall are parallel to the installation direction while the front wall and back wall are perpendicular to the installation direction. A front wall is the wall through which the frequency converter unit is moved to the installed position. In The main difference between the frequency converter assembly of There are two differences between the frequency converter unit 4′ of The second difference is that there is a third handle position 53′ on a third side wall 403′. A handle 55′ is received in the third handle position 53′ for moving the frequency converter unit 4′. The handle 55′ is identical with the handle 55. In Several frequency converter assemblies according to above described embodiments may be installed side by side. It is also possible to install several frequency converter assemblies one on the other. Although the first side wall, the second side wall, the third side wall and the bus bar side wall are vertical walls in the above described embodiment, it is clear that in further embodiments the first side wall or the bus bar side wall may be a horizontal wall. It will be obvious to a person skilled in the art that the inventive concept can be implemented in various ways. The invention and its embodiments are not limited to the examples described above but may vary within the scope of the claims. It will be appreciated by those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The presently disclosed embodiments are therefore considered in all respects to be illustrative and not restricted. The scope of the invention is indicated by the appended claims rather than the foregoing description and all changes that come within the meaning and range and equivalence thereof are intended to be embraced therein. |