Automatic voltage stabilizing regulation power source with variable far end load

Abstract

The automatic voltage stabilizing regulation power source with variable far end load includes current feedback module, voltage feedback module and regulating power source module, and is connected via long distance power cable to the far end variable load terminal. The voltage sensor is connected parallelly to the output of output protecting circuit in the regulating power source module for sampling voltage, and the current sensor is connected serially to the output protecting circuit in the regulating power source module to detect real-time current in long distance power cable. The output is connected serially to matching circuit, full wave rectifier circuit, filter, A/D converter and microprocessor successively and connected to the I/O interface module of the regulating power source module and provide current feedback for the regulating power source module. The present invention has fast response, high precision sinusoid wave output and high driving power.

Description

Technical field: [0001] The invention relates to an automatic voltage-stabilizing and adjusting power supply, in particular to an automatic voltage-stabilizing and adjusting power supply capable of realizing remote load changing, and belongs to the field of measurement and control engineering. Background technique: [0002] Because the working environment of the gas pipeline robot system is very harsh, the system generally adopts the cable type, and the information and power are transmitted by the same cable. In this environment, the power supply of the pipeline robot system needs to pass through the cable for a long distance (usually 1 to 2km) Reliable transmission. Because the cable distance is too long, the equivalent resistance on the line cannot be ignored. When the load changes, the power supply voltage of the gas pipeline robot at the far end will change greatly, causing the robot to fail to work normally and stably. [0003] At present, there are two types of common...

AI Technical Summary

Problems solved by technology

Thyristor voltage regulation is relatively simple and flexible to use, but there are also many disadvantages. For example, when it is used for resistive loads and inductive loads at a certain conduction angle, it may cause non-conduction of the thyristor.

In addition, the output of the thyristor is a discontinuous waveform, and sometimes it will form a spike interference. If it is applied to the robot's voltage stabilization, the spike will bring a huge impact to the robot, which will not only affect the normal operation of the robot, but also cause reduce the lifespan of the robot

[0006] In summary, the commonly used inductive pressure regulators and thyristor pressure regulators are not suitable for the remote voltage stabilization system of the gas pipeline robot