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Adjustable inductance

An adjustable, inductive technology, applied in variable inductors, inductors, circuits, etc., can solve the problems of reactance rate change, current waveform distortion, inability to achieve filtering effect, etc., to achieve the effect of great social and economic benefits

Inactive Publication Date: 2006-12-20
SHANGHAI HAIBEI ELECTRIC CONTROL EQUIP TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the power system, harmonics distort the voltage and current waveforms, seriously affecting the quality of power supply
Harmonics of different orders are generally suppressed by using capacitor banks and inductors connected in series to configure corresponding reactance rates. However, at present, the inductance parameters after the inductor is manufactured are constant, so the application of capacitor banks and inductors The reactance rate obtained by the series configuration is also constant
This kind of static filtering with constant reactance rate has a certain effect on the local treatment of a single harmonic source, but the static filtering in areas with multiple and changing harmonic pollution cannot achieve the ideal filtering effect.
Furthermore, the capacitance of the capacitor bank is affected by the manufacturing process and service life, and capacitance loss or failure will inevitably occur, which will change the reactance rate and attenuate or lose the filtering effect.

Method used

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Embodiment

[0016] Such as figure 1 , figure 2 As shown, an adjustable inductance includes inductance, adjustment and control devices. The inductance is composed of an annular iron core 1 wound from a magnetic strip material, a threaded wire 2 and an insulating shell 3. The annular iron The core 1 is arranged in the insulating shell 3, the threading wire 2 is wound between the outer diameter and the inner hole of the insulating shell 3, and the magnetic strip material is made of beryllium-molybdenum alloy material; the regulating The control device includes an adjusting screw 4, a spacer 5, a stepper motor 6, and a controller 7. The spacer 5 is located at the end of the adjusting screw 4 in contact with the annular iron core 1; the insulating shell 3 has a Screw hole 8 (internal threaded metal insert), through which the adjusting screw 4 adjusts the deformation of the annular iron core 1; the controller 7 is a single-chip microcomputer, which is responsible for receiving and processing ...

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PUM

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Abstract

The invention relates to an adjustable inductance, which comprises an inductance, and an adjusting controlling device, wherein said inductance comprises an annular iron core formed by coiled magnetic band material, and wires; the adjusting controlling device functions one external force on said magnetic band material to make part deformation, to change the inductance value. Since the invention can adjust the inductance valve, and use microcomputer to distribute different reactance rates, and modify the reactance rate based on real condition, with dynamic filter function; therefore, the invention has long stable effect on the electricity wire netting harmonic wave treatment, with significant social and economic benefits.

Description

technical field [0001] The invention relates to electrical components, in particular to an adjustable inductance. Background technique [0002] In the power system, harmonics distort the voltage and current waveforms, seriously affecting the quality of power supply. Harmonics of different orders are generally suppressed by using capacitor banks and inductors connected in series to configure corresponding reactance rates. However, at present, the inductance parameters after the inductor is manufactured are constant, so the application of capacitor banks and inductors The reactance rate obtained by series configuration is also constant. This kind of static filtering with constant reactance rate has a certain effect on the local treatment of a single harmonic source, but the static filtering in areas with multiple and changing harmonic pollution cannot achieve the ideal filtering effect. Furthermore, the capacitance of the capacitor bank is affected by the manufacturing proce...

Claims

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Application Information

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IPC IPC(8): H01F29/00
Inventor 刘学贵严锡华
Owner SHANGHAI HAIBEI ELECTRIC CONTROL EQUIP TECH
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