A method to improve the utilization rate of solar panel power generation

Abstract

The invention is applicable to the field of solar power generation, and provides a method for improving the utilization rate of solar panel power generation, which comprises the following steps: S1. The solar energy simulation module measures the weak energy state defined value of the maximum power point tracking of the product; S2, signal processing The module collects signal data; S3, the solar MPPT control module enters the charging state and tracks to the approximate maximum power point according to theoretical calculations; S4, the solar MPPT control module compares its charging current with the defined value of S1, respectively tracks the solar panel in the weak state. The maximum power point in the energy state is restarted regularly or the maximum power point in the strong light and high power state is tracked at all times; so that the energy generated by the solar panel can be fully utilized, and it has a very high maximum power point tracking under the condition of strong light and high power. It also has excellent maximum power point tracking efficiency in low light and low power state, and can obtain the maximum power stably in the scenario where the solar panel string voltage is too low, and the application is more flexible.

Description

technical field [0001] The invention belongs to the field of solar power generation, and particularly relates to a method for improving the utilization rate of solar panel power generation. Background technique [0002] During the operation of the solar power generation system, when the light radiation intensity is low in cloudy days or during the morning sunrise and evening sunset times, the power generation capacity of the solar panel is weak. At this time, the energy generated by the solar panel is not easy to capture. The common phenomenon is that the voltage of the solar panel is The MPPT controller or photovoltaic grid-connected inverter is rapidly pulled down, causing the MPPT controller or photovoltaic grid-connected inverter to stop working and then restart. Repeatedly repeating this action poses a challenge to the reliability of the auxiliary power supply of the product. It wastes the energy that the solar panel can generate, reduces the power generation utilizatio...

AI Technical Summary

Problems solved by technology

[0002] During the operation of the solar power generation system, when it is cloudy or when the light radiation intensity is low in the morning sunrise and evening sunset periods, the power generation capacity of the solar panels is weak. At this time, the energy generated by the solar panels is not easy to capture. The common phenomenon is that the voltage of the solar panels is reduced The MPPT controller or photovoltaic grid-connected inverter pulls down rapidly, so that the MPPT controller or photovoltaic grid-connected inverter stops working and then restarts. Repeating this action poses a challenge to the reliability of the auxiliary power supply of the product, and also It wastes the energy that solar panels can generate, reduces the utilization rate of solar panel power generation, and makes users mistakenly think that the equipment is faulty; in some special application scenarios, the solar panels that are allowed to be connected will be limited, and the maximum The power point voltage is lower than the battery voltage used for energy storage. When the MPPT controller is used to generate electricity, it is also prone to unstable phenomena that cannot track the maximum power point and restart continuously.

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