Bridgeless inverter circuit and solar bridgeless inverter

The technology of an inverter circuit and an inverter is applied to a bridgeless inverter circuit and a solar bridgeless inverter. In the field of heat treatment, it can solve the problems of many heat treatment components, low energy utilization rate and heavy equipment weight, etc., and achieve the effect of low transportation cost, high energy utilization rate and small equipment weight

Inactive Publication Date: 2013-04-03
LEADSOLAR ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Bridgeless inverter circuit and solar bridgeless inverter
  • Bridgeless inverter circuit and solar bridgeless inverter
  • Bridgeless inverter circuit and solar bridgeless inverter

Examples

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Embodiment 1

[0063] According to an embodiment of the present invention, a bridgeless inverter circuit is provided. Such as Figure 5 and Figure 6 As shown, this embodiment includes an electric energy harvesting device, a power grid, a DSP, and a two-phase parallel first quasi-DC / DC whose input ends are respectively connected to the output ends of the electric energy harvesting device, the control ends are respectively connected to the DSP, and the output ends are respectively connected to the output ends of the power grid. The converter and the second quasi-DC / DC converter, wherein:

[0064] The above-mentioned DSP is used to send control signals to the first quasi-DC / DC converter and the second quasi-DC / DC converter connected in parallel, so that the first quasi-DC / DC converter and the second quasi-DC / DC converter in parallel The DC converter works in time-sharing within a preset power frequency cycle, and splices the positive half quasi-sine wave voltage and the negative half quasi-s...

Embodiment 2

[0070] According to an embodiment of the present invention, a bridgeless inverter circuit is provided. Such as Figure 7 As shown, this embodiment includes an electric energy harvesting device, a power grid, a DSP, and a multi-phase parallel or multi-phase interleaved parallel multi-phase parallel connection in which the input ends are respectively connected to the output ends of the electric energy harvesting device, the control ends are respectively connected to the DSP, and the output ends are respectively connected to the output ends of the power grid. A quasi-DC / DC converter, where:

[0071] The above-mentioned DSP is used to send control signals to multiple quasi-DC / DC converters in multi-phase parallel or multi-phase interleaved parallel, so that the multiple quasi-DC / DC converters in multi-phase parallel or multi-phase interleaved Time-sharing work in the power frequency cycle, and the positive half quasi-sine wave voltage and the negative half quasi-sine wave voltage...

Embodiment 3

[0098] According to an embodiment of the present invention, a solar bridgeless inverter is provided. Such as Figure 14 As shown, this embodiment includes a DC input power supply and an input filter capacitor connected in parallel at the output end of the DC input power supply composed of electrical energy harvesting devices, grid with grid side load , DSP, and the input terminals are respectively connected to the output terminal of the DC input power supply, the control terminals are respectively connected to the DSP, and the output terminals are respectively connected to the power grid A plurality of quasi-DC / DC converters connected in multi-phase parallel or multi-phase interleaved parallel at the output, wherein:

[0099] DSP, used to send control signals to multiple quasi-DC / DC converters in multi-phase parallel or multi-phase interleaved parallel, so that multiple quasi-DC / DC converters in multi-phase parallel or multi-phase interleaved Time-sharing work within t...

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PUM

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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 ...

Claims

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Application Information

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IPC IPC(8): H02M7/42H02M7/48
CPCH02M3/33569H02M7/4807H02J2300/22H02J2300/24H02J3/381Y02B70/10Y02E10/56H02M3/01
Inventor 郑崇峰邱齐梁志刚
Owner LEADSOLAR ENERGY
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