Photovoltaic grid-connected inverter and control method therefor

A technology of inverters and photovoltaics, applied in the direction of transformers, photovoltaic power generation, variable inductors, etc., can solve problems such as troublesome assembly, different power and voltage of battery panels, etc., and achieve improved efficiency, large output voltage range, and applicable scope wide effect

Active Publication Date: 2018-09-04
湖南鸿韶项目管理有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing photovoltaic power generation system, due to the different power and voltage of the commonly used panels at present, when assembling and connecting to the grid, different panels need to be selected according to different inverter models, so the assembly is troublesome

Method used

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  • Photovoltaic grid-connected inverter and control method therefor
  • Photovoltaic grid-connected inverter and control method therefor
  • Photovoltaic grid-connected inverter and control method therefor

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Embodiment Construction

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only a part of the embodiments of the present invention, not all of them.

[0046] As shown in the figure, a photovoltaic grid-connected inverter includes a DC input unit, an inverter unit, a voltage detection unit and a main control CPU.

[0047] The inverter unit includes:

[0048] Inverter module: used to convert DC voltage into AC voltage;

[0049] Boost module: used to boost the AC voltage output from the inverter module.

[0050] In this embodiment, the inverter unit further includes an AC filter unit: used to filter the boosted AC voltage;

[0051] The step-up module includes a transformer, and the transformer includes an iron core, an input terminal, an input coil, an output terminal A, an output terminal B, a drum A, a drum B, and a threading plate; There ar...

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Abstract

The invention discloses a photovoltaic grid-connected inverter and a control method thereof. The photovoltaic grid-connected inverter comprises a DC input unit, an inverter unit, a voltage detecting unit and a main control CPU. The inverter unit comprises an inverter module and a rising a voltage module, and the boosting module includes a transformer. The transformer includes an iron core, an input terminal, an input coil, an output terminal A, an output terminal B, a rotary drum A, a rotary drum B, and a threading plate. The rotary drum A and the rotary drum B are provided with conductive coils which have the same winding direction and are connected through a conductive wire. The rotary drum A is mounted on the iron core, and the conductive coil wound on the rotary drum A forms an outputcoil. The conductive wire and the output terminal B are connected with each other, and the rotary drum B drives the rotary drum A to rotate. The inverter has an output voltage range which is large enough, and is wide in application range. Moreover, the inverter employs a main control CPU for cooperating with the voltage detection, and can achieve the full-automatic control.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic power generation, and in particular relates to a photovoltaic grid-connected inverter and a control method thereof. Background technique [0002] In the existing photovoltaic power generation system, due to the different power and voltage of the commonly used battery panels at present, when assembling and connecting to the grid, it is necessary to select different battery panels according to different inverter models, so the assembly is troublesome. Contents of the invention [0003] In view of the above problems, the present invention provides a general-purpose photovoltaic grid-connected inverter, which is suitable for different types of battery panels. [0004] The present invention provides a photovoltaic grid-connected inverter to solve the above-mentioned problems, and the adopted technical scheme is as follows: [0005] A photovoltaic grid-connected inverter, including a DC input un...

Claims

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Application Information

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IPC IPC(8): H02M7/00H01F29/02H02P13/06
CPCH01F29/02H02M7/003H02P13/06Y02E10/56
Inventor 周新望林世福
Owner 湖南鸿韶项目管理有限公司
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