Single-phase inversion system for realizing parallel operation of multiple inverters

Abstract

The invention discloses a single-phase inversion system for realizing the parallel operation of multiple inverters. The system comprises a DC / DC conversion circuit, a capacitor bank voltage stabilizing circuit, an inversion circuit and an LC filter circuit connected in sequence and is provided with MCU processors A and B; the MCU processor A collects the current and voltage information of the input side of the DC / DC conversion circuit through a voltage and current collection circuit and controls the on-off state of a control switch S1 in real time according to information transmitted by the DC / DC conversion circuit; the MCU processor B collects the current information of the front side of an alternating current output wiring terminal through a current transformer and controls the on-off state of a control switch S2 in real time according to information transmitted by the capacitor bank voltage stabilizing circuit and the inversion circuit. The system is simple in structure, stable in operation and high in anti-interference capability, and can control the parallel combined operation of the multiple inverters by controlling the on-off states of the control switches S1 and S2 in realtime.

Description

technical field [0001] The invention relates to an inverter system, in particular to a single-phase inverter system for realizing parallel operation of multiple inverters. Background technique [0002] At present, the existing inverters are simple in structure and single in function, each inverter can only operate independently, and cannot be combined in parallel, so it cannot meet some specific actual working conditions; and the existing inverters are working It is vulnerable to electromagnetic interference, and it is difficult for these inverters to support multiple communication methods and LCD liquid crystal displays. Contents of the invention [0003] The purpose of the present invention is to solve the above-mentioned problems existing in the existing inverters, and to provide a single-phase inverter system for realizing the parallel operation of multiple inverters. [0004] The specific solution of the present invention is: a single-phase inverter system that reali...

AI Technical Summary

Problems solved by technology

[0002] At present, the existing inverters are simple in structure and single in function, each inverter can only operate independently, and cannot be combined in parallel, so it cannot meet some specific actual working conditions; and the existing inverters are working susceptible to electromagnetic interference, and these inverters are difficult to support a variety of communication methods and LCD liquid crystal display

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