Photovoltaic system mppt control method, system, storage medium and controller

By monitoring the output electrical parameters of the photovoltaic array in real time and introducing adjustment compensation, the problem of dead loop in the photovoltaic system under large environmental disturbances was solved, and the maximum power point tracking was quickly restored, thus improving the stability and energy utilization of the system.

CN122111170APending Publication Date: 2026-05-29LOCTEK ERGONOMIC TECH CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LOCTEK ERGONOMIC TECH CORP
Filing Date
2026-01-22
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Traditional photovoltaic power generation systems are prone to entering a dead loop under large disturbances in environmental parameters, which prevents the maximum power point tracking process from tracking the new maximum power point in a timely manner, resulting in energy loss and poor stability.

Method used

By monitoring the output electrical parameters of the photovoltaic array in real time, the dead loop state is determined by the state variables, and when the triggering conditions are met, the adjustment compensation amount is introduced into the voltage command reference value to generate the corrected target control command, drive the system out of the dead loop and track to the new maximum power point.

Benefits of technology

It enables rapid and stable escape from dead loops under large disturbance conditions, shortens power recovery time, and improves the dynamic stability and energy utilization of the system.

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Abstract

The application discloses a kind of photovoltaic system MPPT control method, system, storage medium and controller.The method comprises: the output electric parameter of photovoltaic array is collected;Determine the voltage instruction reference value for adjusting operating point, and the state variable for representing whether maximum power point tracking process enters dead loop state;State variable is monitored, when it satisfies preset trigger condition, it is judged that system enters maximum power point tracking dead loop state and generates trigger signal;In response to trigger signal, introduce adjustment compensation in voltage instruction reference value to obtain modified target control instruction;Based on target control instruction, drive system to get out of dead loop state and track to new maximum power point;Finally, control adjustment compensation returns to zero to restore closed-loop control.The application realizes effective identification and forced intervention to tracking abnormal state, solves the problem that system is easy to fall into search dead loop under large disturbance, ensures the continuity and stability of tracking process.
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