Alternating voltage zoning coding circuit

Abstract

An AC voltage zoning coding circuit is used for zoning compensation of a single-phase AC voltage regulator. An AC voltage in a given range is divided into a plurality of voltage level intervals, and voltage level coding values corresponding to the plurality of voltage level intervals one by one are output. The zoned compensated single-phase AC voltage regulator further comprises a decoding and gating unit, a delay protection unit, a trigger and gating configuration unit, a trigger unit, an error detection and discrimination unit, a protection and driving unit, and a compensated main circuit. The A / D conversion coding unit samples the AC power supply voltage, and the decoding and gating unit decodes the voltage level coding value and outputs the decoded output to the trigger gating configuration unit after being delayed to output the trigger control signal, and the trigger unit controls the on-off of the thyristor in the thyristor bridge in the compensation main circuit. The voltage stabilizer not only realizes the interlock control, but also starts / stops the protection of the thyristor bridge according to whether the trigger gating control value is effective or not, controls the power supply of the trigger unit, and effectively strengthens the protection strength against the abnormal working 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 circuit. 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 co...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned problems existing in the existing AC voltage partition and compensated AC voltage stabilizer, the present invention provides an AC voltage partition coding circuit, including an AC voltage sampling circuit and an analog-to-digital conversion coding circuit; The effective value of the voltage is measured to obtain the sampling value of the AC voltage; the analog-to-digital conversion encoding circuit divides the AC voltage in a given range into M voltage level intervals, and outputs voltage level encoding values ​​corresponding to the M voltage level intervals one by one; M can be adjusted between greater than or equal to 2 and less than or equal to m, said m is greater than or equal to 3

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