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Voltage compensator capable of avoiding conduction-through for thyristor

A voltage compensation and thyristor technology, which is applied in the field of contactless AC voltage compensation and voltage regulation, can solve the problems of poor AC voltage compensation, short service life and high heat, and achieves energy saving, long service life and good compensation effect. Effect

Inactive Publication Date: 2007-07-25
李建明
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AI Technical Summary

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

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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, and the primary winding of the compensation transformer T is composed of at least two sets of first winding W1 and second winding W2 with the same number of turns; the thyristor bridge The circuits are composed of at least eight unidirectional thyristors, namely: the first unidirectional thyristor S1, the second unidirectional thyristor S2, the third unidirectional thyristor S3, the fourth unidirectional thyristor S4, the fifth unidirectional thyristor S5, and the sixth unidirectional thyristor. The thyristor S6, the seventh unidirectional thyristor S7, and the eighth unidirectional thyristor S8 are divided into two groups to form a thyristor bridge group H;

[0012] The first unidirectional thyristor S1 and the second unidirectional thyristor S2 are cathode-connected A-terminals connected to the head end 1 of th...

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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 least two 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 group H; 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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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/30
Inventor 李建明
Owner 李建明
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