Compensation type AC voltage regulator

Abstract

An AC voltage partition encoding method is implemented by an AC voltage partition encoding circuit, and is used for a single-phase AC voltage regulator. The method comprises the following steps: dividing an AC voltage in a given range into a plurality of voltage level intervals; and outputting voltage level encoding values corresponding to the plurality of voltage level intervals in a one-to-one correspondence manner. The single-phase AC voltage regulator further comprises a decoding gating unit, a delay protection unit, a trigger gating configuration unit, a trigger unit, an error detection unit, a protection drive unit and a self-coupled compensated main circuit unit. The decoding gating unit decodes a voltage level encoding value; the delay protection unit outputs a delayed trigger gating control value and a non-trigger area control signal; and the trigger gating configuration unit outputs a trigger control signal. The trigger unit controls the on / off of a thyristor in a thyristor switch group in the compensation main circuit. The voltage regulator realizes an interlock control, starts / stops the protection of the thyristor switch group according to whether the trigger gating control value is valid or not, and controls a power supply of the trigger unit, thereby effectively strengthening the protection against the abnormal in an operation process.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a compensation type 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 carbon brush...

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 AC voltage stabilizer, including a compensated main circuit, a sampling comparison unit, an encoding unit, a delay protection unit, and an interlock control unit , trigger unit, error detection control unit

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