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Control method for simulating output characteristics of photovoltaic cell panel

A technology of photovoltaic panels and control methods, applied in control/regulation systems, regulation of electrical variables, instruments, etc., can solve the problems of many control steps and complex calculations, and achieve the effect of simple calculations, few control steps, and good practicability

Pending Publication Date: 2020-06-05
深圳市高斯宝电气技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the conventional control method is based on the output voltage-current curve of the photovoltaic panel, using the voltage outer loop and the current inner loop to perform double closed-loop control. This method has many control steps and complex calculations.

Method used

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  • Control method for simulating output characteristics of photovoltaic cell panel
  • Control method for simulating output characteristics of photovoltaic cell panel
  • Control method for simulating output characteristics of photovoltaic cell panel

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Embodiment Construction

[0017] Such as figure 2 As shown, the embodiment of the present invention uses a photovoltaic array IV characteristic curve analog power supply based on digital signal processor control, uses BOOST DC / DC conversion circuit as the main circuit, and transmits the voltage and current signals collected in the main circuit to the digital signal processing The digital signal processor controls the main circuit by adjusting the PWM, so as to track the IV characteristic curve of the photovoltaic cell, so as to achieve the purpose of outputting the IV characteristic of the photovoltaic cell.

[0018] The embodiment of the present invention adopts DSP as the main control chip, and the main control chip is responsible for sampling the output voltage and output current of the DC / DC conversion circuit, and outputs the corresponding PWM waveform according to the sampled value, and controls the on-off of the switching device to control the DC / DC conversion circuit The output of the system m...

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PUM

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Abstract

The invention discloses a control method for simulating the output characteristics of a photovoltaic cell panel, and the method comprises the following steps: sampling the output voltage of an analogcircuit, and querying an output power value corresponding to a P-V characteristic curve of a photovoltaic array through an output voltage value; obtaining an input power value according to the input current value and the input voltage value of the analog circuit obtained by sampling; dividing the output power value by the conversion efficiency to obtain an input power target value; carrying out difference operation on the input power value and the input power target value, and carrying out PI ring calculation by utilizing the obtained difference to obtain a duty ratio for controlling a switching tube of the analog circuit, so the output power of the analog circuit is kept on a P-V characteristic curve. The control method provided by the invention has the advantages of few steps, simple operation and good practicability.

Description

[technical field] [0001] The invention relates to photovoltaic cells, in particular to a control method for simulating output characteristics of photovoltaic cell panels. [Background technique] [0002] With the rapid development of the national economy, the demand for energy is also increasing. The consumption of traditional energy has brought a lot of pollution to the environment, and the development and utilization of clean energy has become a top priority. Photovoltaic power generation has been widely concerned and utilized due to its many advantages. In the process of manufacturing of photovoltaic power generation equipment, development of new products, verification of control detection algorithms and teaching, etc., the output characteristics of photovoltaic cells such as different light and temperature are required. For example, in the production and manufacture of photovoltaic inverters, it is necessary to verify whether the photovoltaic inverter can work stably un...

Claims

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Application Information

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IPC IPC(8): G05F1/66
CPCG05F1/66
Inventor 王柱
Owner 深圳市高斯宝电气技术有限公司
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