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Contrable combination type reactor

A reactor, combined technology, applied in the direction of variable inductors, inductors, variable transformers, etc., can solve the problems of large volume, large harmonics, and high noise.

Inactive Publication Date: 2007-12-26
SHANGHAI SURPASS SUN ELECTRIC CO LTD
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  • Abstract
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Problems solved by technology

Its disadvantages are large size, large harmonics, and large noise
[0007] 3. Thyristor control method, which is a method commonly used in China for a long time, mainly changes the equivalent inductance of the reactor by changing the conduction time of the thyristor connected in parallel with the adjustable winding of the fixed reactor , so as to achieve the purpose of continuously adjusting the compensation current; its disadvantage is that the harmonics are particularly large and the noise is large, and it often needs to be used in conjunction with a special filter device

Method used

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  • Contrable combination type reactor

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Embodiment Construction

[0014] The controllable combined reactor as shown in the figure includes a main iron core 1, a main winding 3 wound on the main iron core 1 for alternating current, a control iron core 2, and a control coil wound on the control iron core 2 for passing direct current. The winding 4 is characterized in that: the control iron core 2 is a hollow cylindrical iron core body, and at least one frame-shaped main iron core 1 with an opening is inlaid on the upper and lower planes of the cylindrical iron core body.

[0015] This accompanying drawing shows the "star-shaped" iron core main frame composed of three frame-shaped main iron cores with openings and a cylindrical iron core body; the control iron core 2 is provided with The inner and outer control windings 4; the main winding 3 is wound on the main iron core body radially parallel to the control iron core cylindrical body.

[0016] The working principle of the controllable combined reactor is as follows:

[0017] The two ends of ...

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Abstract

The controllable composite type reactor includes following parts: main iron core; AC main winding wound on the main iron core; control iron core; DC control winding wound on the control iron core. Characters are that control iron core is a hollow cylindrical iron core body, and framework type main iron core with opening is embedded on up and down planes of the cylindrical iron core body so as to constitute main skeleton of star shaped iron core; the control iron core includes control winding wound on inside and outside the cylindrical body; main winding is wound on core body of main iron core paralleled to cylindrical body of cylindrical control iron core in radial. Changing magnitude of current of the control winding, the reactor can change magnetic permeability of cylindrical iron core in axial direction. Thus, the reactor changes reactance value of AC reactor so as to reach purpose of adjusting reactor continuously and smoothly.

Description

technical field [0001] The invention relates to a controllable combined reactor, which is a wire-wound reactance induction device with inductive effect. Background technique [0002] Controllable reactor is an important device for voltage control and reactive power compensation in the power system, widely used in power transmission and distribution; power grid voltage, reactive power flow control; improving system stability and increasing transmission power; ultra-high voltage power grid power frequency and Operating overvoltage limitation; system grounding current compensation (arc suppression coil); harmonic suppression of high-power rectification system, etc. [0003] Controllable reactors are required to have a wide range of applicable voltage and capacity, continuous, smooth, fast adjustable parameters, high reliability, small harmonics, small footprint, and simple maintenance. At present, the controllable reactor technology has not yet met the above requirements. In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F29/00H01F27/30
Inventor 薛建科薛靖
Owner SHANGHAI SURPASS SUN ELECTRIC CO LTD
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