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Photovoltaic module with self compensating function

A photovoltaic module and self-compensation technology, applied in the direction of photovoltaic power generation, photovoltaic modules, electrical components, etc., can solve the problems that the maximum power point of the photovoltaic cell module cannot be found, the power optimizer changes, and the electrical connection of the photovoltaic cell system structure cannot be used. , to achieve the effects of improving implementability, reducing energy loss, and improving energy utilization

Active Publication Date: 2015-01-07
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the photovoltaic shading problem, the academic community has proposed some solutions to the shadowing problem at the array level and module level; however, the shadow occlusion of the distributed photovoltaic power generation system that plagues the single-module structure is part of the photovoltaic cell chips in the module, and the traditional power optimization The inverter cannot be used because of the need to change the system structure or electrical connection of photovoltaic cells
The photovoltaic cell chipset voltage equalization circuit proposed by some scholars uses multi-stage DC / DC converters to forcibly pull the output of each group to the same value, and cannot really find the maximum power point of the photovoltaic cell module under different partial shading conditions.

Method used

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  • Photovoltaic module with self compensating function
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  • Photovoltaic module with self compensating function

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Embodiment Construction

[0035] In order to describe the present invention more specifically, the technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] Such as Figure 8 and 9 As shown, a photovoltaic module with self-compensation function includes three photovoltaic chipsets, and the photovoltaic chipsets are connected in parallel with bypass diodes; after the three photovoltaic chipsets are connected in series, a power compensation circuit is connected between the two ends; the power compensation circuit is connected to Has a control circuit; where:

[0037] The control circuit is used to collect the output voltage U of the photovoltaic module o and output current I o And the voltage of each photovoltaic chipset, and use the climbing algorithm to construct the control signal according to these signals; in this embodiment, the control circuit is constructed by the sampling circuit, DSP and dri...

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Abstract

The invention discloses a photovoltaic module with a self compensating function. The photovoltaic module with the self compensating function comprises a plurality of photovoltaic chipsets, wherein a power compensation circuit is connected in a bridging mode between two ends of the plurality of photovoltaic chipsets after the photovoltaic chipsets are connected in series, and the power compensation circuit is connected with a control circuit. According to the photovoltaic module with the self compensating function, energy is extracted from master output of the photovoltaic module and is supplied to the photovoltaic chipsets which are affected by shadows, and then the working point of the photovoltaic chipsets is changed and electric energy output is restored, and therefore whole output power of the photovoltaic module is improved. Due to the fact that a photovoltaic battery is in a power generating state and energy is not consumed, the energy extracted can still be provided with load, and utilization of the energy extracted is not affected.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic power generation, and in particular relates to a photovoltaic module with self-compensation function. Background technique [0002] Photovoltaic power generation technology, which uses clean solar energy as energy, has received widespread attention worldwide. Scholars from the fields of materials, architecture, power systems, power electronics, and control have devoted themselves to research in the field of photovoltaic power generation, promoting its development and application. At present, photovoltaic power generation has become the second largest power generation method after wind power generation system in installed capacity, and has broad application prospects. It is worth noting that since the power generation unit (usually a photovoltaic module) of photovoltaic power generation technology is small in size, has little pollution and no noise, it is the most ideal distributed power gene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02S40/30
CPCY02E10/50
Inventor 吴建德杜进王智博徐睿何湘宁
Owner ZHEJIANG UNIV
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