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Voltage compensator capable of avoiding conduction-through for thyristor

A technology of voltage compensation and thyristor, which is applied in the field of non-contact AC voltage compensation and voltage stabilization, can solve the problems of poor AC voltage compensation effect, short service life, and large energy consumption, and achieve power saving, long service life and compensation effect Good results

Inactive Publication Date: 2004-03-24
李建明
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  • Abstract
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Problems solved by technology

[0003] The present invention provides a voltage compensation device capable of avoiding thyristor straight-through, which can solve the existing problems in the prior art, such as poor AC voltage compensation effect, large energy consumption, high heat and short service life due to the inability to avoid thyristor straight-through. question

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  • Voltage compensator capable of avoiding conduction-through for thyristor
  • Voltage compensator capable of avoiding conduction-through for thyristor

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Embodiment Construction

[0011] The voltage compensation device capable of avoiding thyristor straight-through of the present invention has a compensation transformer T and a thyristor bridge circuit. The primary windings of the compensation transformer T are respectively composed of at least two sets of windings W1 and W2 with the same number of turns; the thyristor bridge circuit is composed of at least The eight unidirectional thyristors S1-4 and S5-8 are divided into two groups to form a thyristor bridge group H;

[0012] The A terminal after the cathode connection of the unidirectional thyristor S1 and S2 is connected to the first terminal 1 of the primary winding W1 of the compensation transformer T; the B terminal after the anode connection of the unidirectional thyristor S3 and S4 is connected to the first terminal 3 of the primary winding W2 of the compensation transformer T Connected; the C terminal connected to the cathode of the unidirectional thyristor S5 and S6 is connected to the termina...

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Abstract

The invention provides a voltage compensating device able to avoid thyristor direct connection, including compensating transformer T and thyristor bridge. Primary winding of T is composed of at leasttwo windings W1 and W2 respectively, their number of windings same; the thyristor bridge uses at least 8 single-way thyristors S1-4 and S5-8, divided into two groups to compose thyristor bridge groupH; S1 and S2 with the cathodes connected together are linked with header point of W1; S3 and S4 with the anodes connected together are linked with header point of W2; S5 and S6 with the cathodes connected together are linked with end point of W2; S7and S8 with the anodes connected together are linked with end point of W1.

Description

technical field [0001] The invention relates to the technical field of non-contact AC voltage compensation and voltage stabilization. Background technique [0002] The widely used non-contact AC compensation and voltage regulating devices mostly use bidirectional thyristors as solid-state switches to form bridges and compensation transformers. The disadvantages in actual work are: when the solid-state switch is in the switching process, each The two solid-state switches connected in series in the branch circuit will be turned on at the same time in an instant, that is, a direct-through phenomenon, which is likely to cause an instantaneous short circuit of the power supply. At present, the solution to such problems is mostly to connect a high-power current-limiting resistor in series in the solid-state switch circuit. However, the current-limiting resistor consumes a lot of power and generates a lot of heat during normal operation, which seriously affects the power of the dev...

Claims

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Application Information

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IPC IPC(8): G05F1/30
Inventor 李建明
Owner 李建明
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