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Device and method for tracking maximal power point in photovoltaic power generation

A technology of maximum power point and photovoltaic power generation, applied in photovoltaic power generation, adjusting electrical variables, instruments, etc., can solve problems such as rapid changes in external factors and easy oscillations that are not applicable

Inactive Publication Date: 2014-05-07
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This device is simple and practical, but it is prone to oscillations during the control process, and it is not suitable for rapid changes in external factors.

Method used

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  • Device and method for tracking maximal power point in photovoltaic power generation
  • Device and method for tracking maximal power point in photovoltaic power generation
  • Device and method for tracking maximal power point in photovoltaic power generation

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Embodiment Construction

[0028] The structure of the present invention is as figure 1 As shown, it includes a single photovoltaic cell open circuit voltage acquisition module, a temperature measurement module, a humidity measurement module, a photovoltaic power generation predictive controller, a voltage regulation module, and a power supply module. The single photovoltaic cell open circuit voltage acquisition module, temperature measurement module and humidity measurement module are all connected to the photovoltaic power generation predictive controller, the photovoltaic power generation predictive controller is connected to the voltage adjustment module, the power module is a single photovoltaic cell open circuit voltage acquisition module, temperature measurement Module, humidity measurement module, photovoltaic power generation predictive controller and voltage regulation module supply power.

[0029] The open-circuit voltage acquisition module of the single photovoltaic cell is as figure 2 As ...

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Abstract

The invention discloses a device and a method for tracking a maximal power point in photovoltaic power generation. The device comprises a single photovoltaic battery open-circuit voltage collecting module, a temperature measuring module, a humidity measuring module, a photovoltaic power generation prediction controller, a voltage regulation module and a power supply module; the photovoltaic power generation prediction control module calculates the voltage of the maximal power point according to an open-circuit voltage signal, a temperature signal and a humidity signal collected by the single photovoltaic battery open-circuit voltage collecting module, the temperature measuring module and the humidity measuring module, the voltage regulation module regulates the voltage outputted by an array photovoltaic battery according to the voltage of the maximal power point so as to obtain the voltage of the maximal power point of the array photovoltaic battery. Due to the adoption of the device and the method, the voltage of the maximal power point of the photovoltaic battery can be quickly and accurately tracked, the voltage of the maximal power point of the photovoltaic battery can be tracked in real time when the factors influencing the photovoltaic power generation such as the weather are changed; and the photovoltaic battery outputs the voltage according to the voltage of the maximal power point.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a device and method for tracking a maximum power point in photovoltaic power generation. Background technique [0002] With the consumption of non-renewable energy and the aggravation of environmental pollution, solar energy is becoming more and more popular by people because of its rich resources, wide distribution, simple development and utilization, and no pollution. It has become an ideal energy source to replace traditional energy sources. It has been widely used in people's life and work. The most important of these is to convert solar energy into electrical energy, that is, to use photovoltaic power generation technology. [0003] Currently applied photovoltaic power generation maximum power point tracking devices and methods mainly include the following two types: [0004] 1. The maximum power point voltage tracking device of photovoltaic power gen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05F1/67
CPCY02E10/58Y02E10/56
Inventor 张同心李江李智鹏
Owner ZHEJIANG UNIV
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