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Solar power generation system

A power generation system and solar cell technology, applied in the field of solar power generation, can solve problems such as inability to increase the working current, and achieve the effects of high photoelectric conversion efficiency, increased output power and system power generation

Pending Publication Date: 2018-08-28
胡炎申
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the purpose of simplifying the description, in this paper, cells, modules, strings, or arrays composed of multiple strings in series and parallel are collectively referred to as solar cells. Multiple solar cells in series can only increase the operating voltage, but cannot increase the operating current.

Method used

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Embodiment Construction

[0025] In order to further increase the operating current of multiple solar cells connected in series, the present invention proposes the concept and technology of solar photoconductive power generation. However, photoconductive technology was only used in optical fiber communication, photoelectric sensors and other fields in the past, and is generally used for weak current signal detection and reception. The essential difference from the photovoltaic effect is that the photoconductive effect must apply an external reverse DC bias voltage on the solar cell, and the direction of the external electric field is the same as the internal self-bias voltage, that is, the direction of the built-in electric field, which breaks the relationship between diffusion motion and drift motion. Relatively balanced, most of the electrons in each region are pushed to the space charge region, that is, the depletion region, so the built-in electric field is strengthened, the drift movement is intensi...

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Abstract

The invention discloses a solar power generation system which comprises at least one solar cell, a direct current output end and at least one bias voltage source, the bias voltage source is connectedwith the solar cell in series, and an external reverse direct current bias voltage is applied to the solar cell by the bias voltage source. The system is high in photoelectric conversion efficiency, the output power of the solar cell and the power generation capacity of the system are improved, and the system can be applied to solar grid-connected, grid-disconnected and energy-storage power generation systems.

Description

[technical field] [0001] The invention relates to solar power generation, in particular to a solar power generation system. [Background technique] [0002] In the solar power generation system, solar cells convert the sun's light energy into direct current, and the voltage and current are increased through the series and parallel connection of solar cells, and the combiner box and power distribution cabinet realize the electrical connection function. The inverter converts this randomly changing The direct current is converted to alternating current with the same frequency, phase and voltage as the public grid to realize grid-connected power generation, or directly converted to 50 / 60Hz alternating current to realize off-grid power generation. Traditional solar photovoltaic power generation systems, such as figure 1 As shown, it mainly consists of solar cells, inverters, AC grids or loads connected in series. [0003] Solar cells are used as photoelectric conversion devices ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/35H02J3/38H02S40/30H02S40/32
CPCH02J3/383H02J7/35H02S40/30H02S40/32Y02E10/56
Inventor 胡炎申
Owner 胡炎申