Intelligent photovoltaic module and photovoltaic power generation system

A photovoltaic module and intelligent technology, applied in the field of power electronics, can solve the problem of high cost, achieve the effect of avoiding high cost and increasing the maximum number of modules connected in series

Active Publication Date: 2020-09-29
SUNGROW POWER SUPPLY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides an intelligent photovoltaic module and a photovoltaic power generation system to solve the problem of high cost caused by the use of a power optimizer in the prior art

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Embodiment Construction

[0069] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0070] The invention provides an intelligent photovoltaic module to solve the problem of high cost caused by using a power optimizer in the prior art.

[0071] Specifically, the smart photovoltaic module includes: a detection control unit, a switch unit, a power module, and a battery unit; wherein:

[0072] The battery unit includes at least two battery substrings; each battery substring includes at least one minimum battery unit (battery slice), that is, the number of battery slices contai...

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Abstract

The invention provides an intelligent photovoltaic module and a photovoltaic power generation system. Parameters of the intelligent photovoltaic module are detected through a detection control unit, and when the parameters meet a preset switching condition, on-off of each switch in the switch unit is controlled to change a connection relationship between battery sub-strings in the battery unit soas to replace a power optimizer to realize adjustment of the voltage of the intelligent photovoltaic module; and the problem of high cost caused by the adoption of the power optimizer is avoided whilethe maximum number of components connected in series of the string is increased.

Description

technical field [0001] The invention relates to the technical field of power electronics, in particular to an intelligent photovoltaic module and a photovoltaic power generation system. Background technique [0002] As photovoltaic power generation in the new energy industry, it is a trend to reduce costs and improve efficiency to achieve grid parity. Among them, increasing the maximum number of components connected in series in the system string is a common method; for example, for components with a conventional 1000V system voltage, calculate the open circuit voltage Voc of the component according to the historical lowest temperature at the installation site, and then divide 1000V by the open circuit voltage Voc Obtain the maximum number of components in series N of the system string; in order to increase the number of components in series, the system voltage level can be increased from 1000V to 1500V by increasing the insulation withstand voltage level of the components, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02S40/36H02S50/00
CPCH02S40/36H02S50/00Y02E10/50
Inventor 曹仁贤云平徐君杨宗军
Owner SUNGROW POWER SUPPLY CO LTD
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