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A matcher for multi module solar string power generation systems and a method thereof

A power generation system, solar energy technology, used in photovoltaic modules, photovoltaic power generation, control/regulation systems, etc.

Pending Publication Date: 2021-07-23
索达索拉电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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However, this method has the disadvantage tha

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  • A matcher for multi module solar string power generation systems and a method thereof
  • A matcher for multi module solar string power generation systems and a method thereof
  • A matcher for multi module solar string power generation systems and a method thereof

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Embodiment Construction

[0034] A photovoltaic solar power system generates its maximum power when all strings, including the array, are operating at the same maximum power point (MPP). However, when a fraction of the panels in the string are replaced with newer panels, the newer panels generally generate more power, ie more voltage and current, than the other older panels. However, the current flow for each string is determined by the weakest panel in the string, and therefore the robust power of the newer panels may not be maximally utilized and lost. Furthermore, spillover of excess power from newer panels can disturb the power balance of the other strings in the array, not to mention heat from excess power, which will reduce their power generation and can accelerate degradation of connected panels. The term "multi-module solar string" is intended hereinafter to include any string of solar panels having panels of different yields, such as: strings with newer and older panels or strings that may be ...

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PUM

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Abstract

The present invention relates to an apparatus for maximizing the power of a multi module solar string power generation system, comprising an Injection Circuit (IC), connected to a DC bus and to a string of solar panels, wherein the IC is also connected to at least one separated solar panel of the string. The IC regulates the power production of the connected string and utilizes the excess power to the solar inverter. The IC comprises: (i) a first MPPT mechanism, for finding the MPP of the string; (ii) a second MPPT mechanism, for finding the MPP of the separated panel; (iii) a first DC/DC converter, for converting some of the power, from the separated panel, to regulating power for the connected string; and (iv) a second DC/DC converter, for converting and utilizing, the excess power from the separated panel, to the solar inverter using the DC bus.

Description

technical field [0001] The present invention relates to solar power generation systems. More specifically, the present invention relates to a method and apparatus for maximizing the power generated from a multi-module solar tandem power generation system. Background technique [0002] To date, photovoltaic solar power systems, or solar farms, have generally consisted of solar panels comprising photovoltaic "cells". Photovoltaic cells are semiconductor devices that convert light into energy. When light shines on the panel, a voltage occurs across the panel, and when connected to a load, current flows. The voltage and current vary with several factors, including the physical size of the panel, panel efficiency, the amount of light shining on the panel, the temperature of the panel, and other factors. [0003] Typically, many solar panels are connected in series, known as a "string", to create an increased output voltage. In general, the higher the voltage - the less energy...

Claims

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Application Information

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IPC IPC(8): H02S40/36H02J1/10G05F1/67
CPCG05F1/67H02J2300/26H02J3/381Y02E10/56H02S40/32H02S40/36
Inventor 伊利亚·纽姆曼什洛莫·阿德勒叶夫塞·贝尔曼
Owner 索达索拉电子有限公司