Bridgeless inverter circuit and solar bridgeless inverter

Abstract

The invention discloses a bridgeless inverter circuit and a solar bridgeless inverter, wherein the bridgeless inverter circuit comprises an electric energy collection device, a power grid, a DSP (Digital Signal Processor), and a plurality of quasi-resonant DC / DC (Direct Current) converters which are in multiphase parallel connection or multiphase interleaving parallel connection; the input ends of the converters are respectively connected to the output end of the electric energy collection device, the control ends of the converters are respectively connected to the DSP, and the output ends of the converters are respectively connected to the output end of the power grid; and, under the control of the DSP, the plurality of quasi-resonant DC / DC converters work in a preset power frequency period in a time-sharing manner and splice the obtained positive half quasi-sine-wave voltage and the obtained negative half quasi-sine-wave voltage to obtain standard sine-wave voltage. The bridgeless inverter circuit and the solar bridgeless inverter provided by the invention can overcome the defects of the prior art of high loss, low energy utilization rate, high heat treatment components number, large equipment weight, high transportation cost and the like so as to realize the advantages of low loss, high energy utilization rate, low heat treatment components number, small equipment weight, low transportation cost and the like.

Description

technical field [0001] The invention relates to electronic devices, in particular to a bridgeless inverter circuit and a solar bridgeless inverter. Background technique [0002] With the further shortage of energy sources, more and more countries pay attention to green energy, and the typical renewable energy power generation systems such as wind energy and solar energy are also widely used. In order to improve energy utilization efficiency, usually this All types of energy conversion will use DC / AC inverters, and the collected green energy will be fed back to the grid for distributed power generation. Its typical power generation system structure is as follows: figure 1 shown. [0003] exist figure 1 In the distributed power generation system shown, the power harvesting device is a blade-driven generator for wind energy, and solar panel components for solar energy. They mainly convert green energy into electrical energy, but the electrical energy also needs Provided to ...

AI Technical Summary

Problems solved by technology

[0011] In the process of realizing the present invention, the inventors found that there are at least some defects in the prior art, such as large loss, low energy utilization rate, many heat treatment components, heavy equipment weight and high transportation cost.

Images