AC voltage partition encoding method

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 voltage regulator realizes a interlock control, starts / stops theprotection of a thyristor switch according to whether the trigger gating control value is valid, and controls a power supply of the trigger unit, thereby effectively strengthening the protection against the abnormal in a operation process.

Description

technical field [0001] The invention relates to the fields of electronic technology and power supply technology, in particular to an AC voltage partition coding method. 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. Its principle is to judge the level of the input voltage, divide it into multiple voltage ranges and automatically control the switching of different winding coils of the primary winding on the compensation transformer, using the transformation ratio relationship between the primary side working winding and the secondary winding, or by adjusting the primary winding The way of applying voltage on the top provides bidirectional and multi-level voltage compensation, so as to achieve the purpose of voltage regulation and voltage stabilization. [0003] Judging the level of the input voltage and con...

AI Technical Summary

Problems solved by technology

[0003] Judging the level of the input voltage and controlling the divided voltage intervals. At present, single-chip microcomputers, PLCs, etc. are mainly used to control analog-to-digital conversion, and then judge partitions and control electronic switch switching. The advantages are flexible control and easy adjustment of the number of partitions. However, single-chip microcomputers, Problems such as running programs and crashes in the PLC will also cause the voltage regulator to fail, or the power supply will be short-circuited due to control logic errors.

Using multiple comparators to judge partitions and control electronic switch switching is simple and reliable, but the number of partitions is not easy to adjust

Images