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Connecting structure of solar photovoltaic string

A technology of connecting structure and photovoltaic group, applied in the field of solar energy, can solve the problem of high power generation cost, achieve the effect of power optimization and cost reduction

Pending Publication Date: 2021-07-09
华能陕西发电有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] see figure 1 As shown, in the existing structure, one photovoltaic module 1 is installed with one power optimizer 2; multiple photovoltaic modules 1 are installed with multiple power optimizers 2, and the power generation cost per watt is relatively high

Method used

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  • Connecting structure of solar photovoltaic string
  • Connecting structure of solar photovoltaic string

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Embodiment approach

[0022] see figure 2 As shown, the present invention provides a connection structure of solar photovoltaic strings, including several photovoltaic modules 1 ; several photovoltaic modules 1 are connected in parallel to form a photovoltaic string 3 .

[0023] Each photovoltaic string 3 is connected to a power optimizer 2, and all the power optimizers 2 are connected in series. Multiple photovoltaic modules 1 in each photovoltaic string 3 use one power optimizer 2; the cost per watt of installing the power optimizer 2 can be effectively reduced, and at the same time, it can play a role in power optimization to a certain extent.

[0024] The power optimizer 2 is an MPPT-based DC-DC converter, including an MPPT controller and a DC-DC converter.

[0025] The number and specifications of photovoltaic modules 1 in each photovoltaic string 3 are the same.

[0026] The photovoltaic module 1 is a GaAs single-junction solar cell, a single-junction dye-sensitized solar cell, a single-ju...

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Abstract

The invention discloses a connecting structure of a solar photovoltaic string. The connecting structure comprises a plurality of photovoltaic modules; the plurality of photovoltaic modules are connected in parallel to form a photovoltaic group string; and each photovoltaic group string is connected with one power optimizer. The invention discloses the connecting structure of the solar photovoltaic string. The plurality of photovoltaic modules are connected in parallel to form the photovoltaic string; each photovoltaic group string is connected with the power optimizer, and all the power optimizers are connected in series. A plurality of photovoltaic modules in each photovoltaic group string use one power optimizer; the cost per watt for installing the power optimizer can be effectively reduced, and meanwhile the power optimization effect is achieved to a certain extent.

Description

technical field [0001] The invention belongs to the technical field of solar energy, and in particular relates to a connection structure of solar photovoltaic strings. Background technique [0002] 76% of my country's land is full of sunlight, and the distribution of light energy resources is relatively uniform. Photovoltaic power generation has no noise and pollutant emissions. The application technology is mature, safe and reliable. Solar energy is the cleanest, safest and most reliable energy source in the future. Developed countries are taking the development and utilization of solar energy as the main content of the long-term planning of the energy revolution. The photovoltaic industry is increasingly becoming another explosive development industry after the IT and microelectronics industries in the world. [0003] Photovoltaic modules for photovoltaic power generation are composed of high-efficiency crystalline silicon solar cells, backplanes and frames. [0004] see ...

Claims

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Application Information

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IPC IPC(8): H02S40/32
CPCH02S40/32Y02E10/50
Inventor 齐国营王本忠宋戈吴智强郭春友高虎房小源彭文博郑清伟李晓磊田鸿翔马铭远
Owner 华能陕西发电有限公司
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