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Resistor with stable structure

A technology with stable structure and resistors, applied in the direction of resistors, resistor installation/support, electrical components, etc., can solve the problems of unstable resistance value and inconsistent contact area, and achieve the effect of stable resistance value and balanced contact area.

Inactive Publication Date: 2017-11-24
GUANGDONG FULLDE ELECTRONICS +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The closer to the middle of the mica string 12, the smaller the axial force of the separators 13, 14 by the nut 17, resulting in the ceramic sleeve 13 and the conductive ring near the middle of the mica string 12 during transportation or in use. 14 is easy to move in the radial direction, resulting in inconsistent contact areas between different conductive rings 14 and resistor sheets 11, and the resistance value is unstable

Method used

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  • Resistor with stable structure
  • Resistor with stable structure
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Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.

[0021] A structurally stable resistor of this embodiment, such as figure 2 and image 3 As shown, it includes two side plates 2, a plurality of resistance sheets 11 juxtaposed and mica string rods 12 for connecting multiple resistance sheets 11 in series, and the two ends of the mica string rods 12 are respectively fixed on two on side panel 2. The mica string rod 12 has porcelain sleeves 13 and conductive rings 14 arranged at intervals, and the nuts 17 at both ends of the mica string rod 12 exert axial clamping force on the porcelain sleeve 13 and the conductive ring 14 to clamp the resistance sheet. Such as Figure 4 As shown, the ceramic sleeve 13 and the conductive ring 14 have the same shape, one end of the two is provided with a flange 15, and the other end of the two is provided with a groove 16 suitable for the flange 15, and the flan...

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Abstract

The invention discloses a resistor with a stable structure. The resistor comprises a plurality of resistor sheets which are parallel and mica string rods for stringing the plurality of resistor sheets together. A plurality of separators are stringed by the mica string rods. The separators comprise ceramic sleeves and conductive rings which are mutually spaced. The resistor sheets are axially and jointly clamped by adjacent ceramic sleeves and conductive rings. The plurality of resistor sheets are connected in series by the conductive sheets. Locking elements for applying axial clamping force to the separators are arranged at two ends of the mica string rods, so the resistor sheets are clamped; axially convex and concave embedded clamping structures are arranged between the adjacent ceramic sleeves and the conductive rings; and the convex and concave embedding parts resist radially and mutually. Compared with the prior art, the resistor has the advantages that the clamping structures are arranged between the adjacent ceramic sleeves and the conductive rings, so the conductive rings can be axially and radially limited, the conductive rings can be effectively prevented from moving axially and radially in a transportation or use process, the contact areas between different resistor sheets and conductive rings are guaranteed to be balanced, and a resistor value is stable.

Description

technical field [0001] The invention relates to the technical field of resistors, in particular to a resistor with stable structure. Background technique [0002] Crowbar resistors are mainly used in the low voltage ride through technology of wind power inverters. It is used on the rotor side of the wind turbine to bypass the converter on the rotor side, and prevent the DC bus voltage from being too high and the rotor current from being too large when a low voltage disturbance occurs in the power grid. In the working state, the Crowbar resistor can dissipate huge energy in an instant. As a clean and renewable energy, wind energy has attracted more and more attention from all over the world. Wind power converters can optimize the operation of wind power generation systems, realize variable speed and constant frequency power generation within a wide wind speed range, and improve fan efficiency and transmission chain work. conditions, reduce generator loss, improve operating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C13/02H01C1/01
CPCH01C1/01H01C13/02
Inventor 周华俊莫焕堂田志华谢庆坚
Owner GUANGDONG FULLDE ELECTRONICS
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