Partitioned auto-coupling compensation type alternating-current voltage stabilizer

Abstract

The invention discloses a partitioned auto-coupling compensation type alternating-current voltage stabilizer. The voltage stabilizer comprises an auto-coupling compensation type main circuit, a sampling comparison unit, a delay protection unit, a trigger gating control unit, a triggering unit, an error detection and discrimination unit, and a protection and drive unit. The auto-coupling compensation type main circuit comprises a compensation transformer, an autotransformer, a thyristor switch group, and a relay protection switch. The sampling comparison unit performs voltage sampling on an alternating-current power supply voltage, and outputs a trigger gating control value. The trigger gating control unit outputs a trigger control signal according to the delayed trigger gating control value. The triggering unit controls the on-off of bidirectional thyristors in the thyristor switch group. The partitioned auto-coupling compensation type alternating-current voltage stabilizer realizes the interlock control, and the protection of the thyristor switch group is started / stopped by the error detection and discrimination unit and the protection and drive unit according to whether the trigger gating control value is valid or not, thereby controlling the power supply of the triggering unit. Therefore, the protection against abnormal work processes is effectively enhanced, and the workingis more stable and reliable.

Description

technical field [0001] The invention relates to the technical field of power supplies, in particular to a partitioned self-coupling compensation 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 movemen...

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 partitioned self-coupling compensated AC voltage stabilizer, which includes an auto-compensated main circuit, a sampling comparison unit, a delay protection unit, and a trigger gating Control unit, trigger unit, error detection and judgment unit, protection drive unit

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