Excitation regulator control circuit

Abstract

The invention relates to an excitation regulator control circuit. A magnetic regulating system is an important component of a synchronous motor, a main task of the magnetic regulating system is to offer an adjustable direct current or a voltage to an excitation winding set of the synchronous motor, so that machine end voltages are controlled to be constant, and thus the need for normal power generation of the synchronous motor is met. The excitation regulator control circuit is characterized in that an analog-to-digital (A / D) acquisition circuit, a single chip computer and a power source are sequentially connected, the A / D acquisition circuit is connected with a voltage monitoring circuit and a current acquisition circuit, one side of a digital-to-analog (D / A) control circuit is connected with the single chip computer, and the other side of the D / A control circuit is connected with an excitation power source voltage circuit and a phase modulation voltage reference circuit. The excitation regulator control circuit accurately adjusts the machine end voltage of the synchronous motor and controls the reactive power of the synchronous motor, a closed loop control system is formed by an A / D system and a D / A system, and thus the purpose of adjusting the conduction angle of a thyristor is achieved.

Description

technical field [0001] The invention relates to a control circuit of an excitation regulator. Background technique [0002] The magnetic adjustment system is a very important part of the synchronous generator. Its main task is to provide an adjustable DC current or voltage to the excitation winding of the synchronous generator, so as to control the constant voltage of the machine terminal to meet the normal power generation requirements of the generator. need. In recent years, the microcomputer excitation regulator has been widely used in many power industries due to its simple and clear hardware structure, good equipment versatility, high degree of standardization, flexible software, convenient realization of multiple functions and meeting the requirements of various control laws. Wide range of applications. However, no matter how high the reliability of each link of the single microcomputer excitation system is, the possibility of failure still exists. In order to ensure...

AI Technical Summary

Problems solved by technology

However, no matter how high the reliability of each link of the single microcomputer excitation system is, the possibility of failure still exists. In order to ensure the reliable operation of the excitation system, the microcomputer excitation regulator should provide a networked and reliable communication interface, so that remote dispatchers or factory-level The staff can conveniently and freely start and stop, increase speed and voltage, connect to the grid, adjust power (including active and reactive power) and other operations

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