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Three-phase silicon controlled rectifier voltage regulating system with self-adaptive performance

A voltage regulation system and self-adaptive technology, applied in the direction of output power conversion devices, electrical components, etc., can solve problems that affect the execution of the main program, complex structure, and cumbersome maintenance

Pending Publication Date: 2021-06-15
DALIAN JIAHE IND CONTROL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are the following problems: it is necessary to configure a series of circuits with complex structures such as synchronous signal sampling circuit, isolation circuit, level conversion circuit and drive circuit, the failure rate is high, and the maintenance is cumbersome; Frequent interruption affects the execution of other main programs, and the work efficiency is low; the CPU unit needs to trigger different topological structures for the three-phase thyristor at the back end, and the conduction angle is calibrated through the program alone, which has poor versatility

Method used

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  • Three-phase silicon controlled rectifier voltage regulating system with self-adaptive performance
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  • Three-phase silicon controlled rectifier voltage regulating system with self-adaptive performance

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Embodiment Construction

[0024] A three-phase thyristor voltage regulation system with self-adaptive performance of the present invention such as figure 1 As shown: an input wiring unit 1 is provided, and the input wiring unit 1 is provided with three-phase electrical ports A, B, C, a control signal PWM port of the thyristor conduction angle and an enable signal EN port, and the conduction angle of the thyristor is Both the control signal PWM port and the enable signal EN port can be optical fiber receiver ports. The thyristor conduction angle control signal PWM port accepts the desired conduction angle control signal sent by any product, and the enable signal EN control can be used in case of failure. Turn off the trigger signal immediately. The three-phase electrical ports A, B, and C are connected to the input terminals of the three-phase electrical synchronous sampling transformer 2, and the output signals Ta, Tb, Tc and Ty of the three-phase electrical synchronous sampling transformer 2 are conne...

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Abstract

The invention discloses a three-phase silicon controlled rectifier voltage regulating system with self-adaptive performance, which is provided with an input wiring unit, wherein the input wiring unit is provided with three-phase power ports A, B and C, a silicon controlled rectifier conduction angle control signal PWM port and an enable signal EN port, the three-phase power ports A, B and C are connected with the input end of a three-phase power synchronous sampling transformer, the output end of the three-phase power synchronous sampling transformer is connected with the input end of the three-phase power synchronous processing unit, and the output end of the three-phase power synchronous processing unit, the conduction angle control signal PWM port and the enable signal EN port are all connected with the input end of a programmable logic device CPLD, the output end of the CPLD is connected with an output wiring unit through a driving isolation unit, and the output wiring unit is provided with six silicon controlled rectifier conduction angle trigger signal output ports P1P2, P3P4, P5P6, P7P8, P9P10, P11P12.

Description

technical field [0001] The invention relates to a three-phase thyristor voltage regulating system, in particular to a three-phase thyristor voltage regulating system with self-adaptive performance which is suitable for three-phase thyristor rectification and inverter topologies. Background technique [0002] The three-phase thyristor voltage regulation technology is to achieve voltage adjustable output by triggering and controlling the conduction angle of three pairs of thyristors. It has been widely used in three-phase full-bridge inverter circuits, three-phase half-bridge inverter circuits and three-phase Variable boost circuit, etc. At present, the three-phase thyristor voltage regulation technology generally adopts the power grid synchronous signal input to the CPU unit based on the single-chip microcomputer for processing, and sends the thyristor conduction angle trigger signal by analyzing the power grid synchronous signal. There are the following problems: it is nece...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/08H02M1/092
CPCH02M1/08H02M1/092
Inventor 李彦生李刚李伟阎厚俊朱君李志勇崔永菠汪中兴李振新
Owner DALIAN JIAHE IND CONTROL TECH
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