Compensated single-phase AC voltage regulator

Abstract

The invention discloses a compensation type single-phase AC voltage stabilizer. The stabilizer comprises a compensation type main circuit, an analog-to-digital conversion coding unit, a decode gatingunit, a delay protection unit, a gate triggering control unit, a trigger unit, an error detection judgment unit and a protection driving unit. The compensation type main circuit comprises a compensation transformer group, a thyristor bridge and a relay protection switch. The analog-to-digital conversion coding unit performs sampling on an AC power supply voltage, and outputs a gate triggering control value obtained by decoding of the decode gating unit. The gate triggering control unit outputs a trigger control signal according to the delayed gate triggering control value, and controls the on-off of a bidirectional thyristor in the thyristor bridge by the trigger unit. According to the compensation type single-phase AC voltage stabilizer, while an interlocking control is realized, the opencircuit protection of the thyristor bridge is started / stopped by the error detection judgment unit and the protection driving unit according to whether the gate triggering control value is valid or not, and the power supply of the trigger unit is controlled, so that the protection strength of abnormities during working is effectively enhanced, thereby enabling the working process to be more stable and reliable.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a compensation type single-phase AC voltage stabilizer. Background technique [0002] The existing compensated AC voltage stabilizer has the advantages of wide voltage stabilization range, almost no waveform distortion, high overall efficiency and strong load adaptability. The principle is to automatically control the switching of different winding coils of the primary winding on the compensation transformer according to the level of the input voltage, using the ratio relationship between the primary side working winding and the secondary winding, or by adjusting the voltage applied to the primary winding , providing bidirectional and multi-level voltage compensation, so as to achieve the purpose of voltage regulation and stabilization. [0003] The disadvantage of the existing compensated AC voltage stabilizer is that when the motor is used to control the movement of the...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the existing compensated AC voltage stabilizer, the present invention provides a compensated single-phase AC voltage stabilizer, which includes a compensated main circuit, an analog-to-digital conversion coding unit, a decoding gating unit, a delay Protection unit, trigger gating control unit, trigger unit, error detection and judgment unit, protection drive unit

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