Intelligent reverse power control system and control method for variable-frequency variable-voltage power supply

Abstract

The invention provides an intelligent reverse power control system and control method for a variable-frequency variable-voltage power supply. The control system comprises an output power calculation unit, a frequency regulating amount calculation unit, a voltage frequency calculation unit, a voltage phase calculation unit, a voltage amplitude value calculation unit and a power module control unit, wherein the output power calculation unit is used for calculating the output power; the frequency regulating amount calculation unit is used for calculating the frequency regulating amount; the voltage frequency calculation unit is used for calculating the three-phase voltage output frequency; the voltage phase calculation unit is used for obtaining the three-phase voltage output phase; the voltage amplitude value calculation unit is used for calculating the output voltage amplitude value; and the power module control unit is used for controlling each power module of the variable-frequency variable-voltage power supply. According to the intelligent reverse power control system and control method, the frequency, the phase and the amplitude value of the output voltage are controlled, so that the generation of reverse power when a shore power supply and a ship power distribution system are in electric switch can be avoided consequently.

Description

technical field [0001] The present invention relates to frequency conversion and voltage conversion equipment, more specifically, to an intelligent inverse power control system and control method for a frequency conversion and voltage conversion power supply. Background technique [0002] The variable frequency and variable voltage power supply is a power supply that converts the mains power into the voltage and frequency that people need through the power conversion circuit. Today, it has been widely used in various industries. [0003] When ships are sailing and docking in the port area, they mainly use auxiliary generators to meet the electricity demand. During this process, the auxiliary generators need to burn a large amount of fuel (mostly diesel and heavy oil) to work. A large amount of CO is produced due to the consumption of fuel 2 and other pollutant discharges, thereby causing pollution to coastal ports and seriously affecting the lives of people in ports. [00...

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide an intelligent reverse power control system and control system for variable frequency and variable voltage power supply in view of the above-mentioned problem of reverse transmission of electric energy that may occur in the process of live switching between shore-based power supply and ship power distribution system. method

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