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METHOD OF USING K-PROFILE IN POWER CONVERTER CUBICLES

IP.com Disclosure Number: IPCOM000246186D
Publication Date: 2016-May-13
Document File: 4 page(s) / 44K

Publishing Venue

The IP.com Prior Art Database

Abstract

A method of fabricating power converter frames using a K-shaped profile is disclosed. The K-shaped profile is fabricated based on three corner bend sheet metal plates and its extended six-bend version. To improve strength and stiffness, additional plate or other section could be welded to enclose part of the profile. The fabrication of the three bend sheet profile requires only two technological processes viz. cutting and bending. The K-shaped profile design is simple and configured to maintain the same envelope as of existing frames. The invention reduces cost and improves strength by 20% relative to existing designs. The profile design could also comprise customized hole pattern implemented during its production.

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This is the abbreviated version, containing approximately 52% of the total text.

Page 01 of 4

 

METHOD OF USING K-PROFILE IN POWER CONVERTER CUBICLES

BACKGROUND

The invention relates to a fabrication of power converter frame and in particular to a method of using a K-shaped profile in power converter cubicle structural frames. It is difficult to create modular structures in a power converter frame because of various components such as incomer, reactor and capacitor banks that may have to be redesigned, including reduction of bus bar length, placement of sensitive components and cable harness. Existing frames have the disadvantages of taking more assembly time, or being labor intensive or less economical. This disclosure provides a solution for the existing power converter frames by using a novel design of profile.

BRIEF DESCRIPTION OF DRAWINGS

The invention discloses method of using K-profile in power converter cubicles, wherein:

Fig.1A shows a three corner bend K-profile and Fig.1B shows a six corner bend K-profile.

Fig.2 shows a profile stiffened by fixing additional square shape profile.

Fig.3 shows a profile welded with additional plate for stiffness.

DETAILED DESCRIPTION

The invention proposes a K-shaped profile in power converter frame structures. The K-profile is fabricated based on three corner bend sheet metal plates and its extended section as six bend metal plates as shown in FIG. 1A and 1B. The profile provides four parallel faces for assembly components and separation walls. The optimized wall thickness is used to give stiffness relevant to the cubicle application. Typically, 2.5 mm thick steel sheet could be used for cubicle application, although sheet thickness could vary depending on the size of frame and expected loading.

FIG. 1A: Three corner bend K-profile FIG. 1B: Six corner bend K-profile

 


Page 02 of 4

 

The profile could be stiffened by either additional square shaped profile for better fixation to the plinth as shown in FIG. 2. Hinges are assembled to the profile and covered by the doors. All profiles can be welded to produce a stiff frame. Further, welding of the new elements is easier and less time consuming, due to the simplicity of profiles.

Square shaped profile

FIG. 2: Stiffening of the profile by fixing additional square shape profile

To improve strength and stiffness, additional plate could be welded to enclose part of the profile with reference as shown in FIG. 3. The additional plate or rib could be placed as punch on second bend in three bend...