A long-life power control method for active photovoltaic inverters based on reliability evaluation

By adopting an active photovoltaic inverter control method based on reliability assessment, the power limit is adjusted according to the inverter's operating position and climatic conditions, which solves the problem of poor inverter reliability in different environments, achieves high reliability and extended lifespan of the inverter, and reduces costs.

CN114640132BActive Publication Date: 2026-06-05FUDAN UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FUDAN UNIVERSITY
Filing Date
2022-03-15
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Photovoltaic inverters have poor reliability under different environmental conditions, resulting in uneven service life. Existing technologies that increase lifespan by adding redundancy increase costs and may cause power generation losses.

Method used

By employing an active photovoltaic inverter control method based on reliability assessment, the reliability of the inverter is calculated according to its operating location and climatic conditions, and its power limit is adjusted to optimize its service life and avoid excessive limitation of power generation.

Benefits of technology

It achieves high reliability and extended lifespan of inverters under different environmental conditions, while reducing costs and increasing user benefits, without requiring modification of the inverter control method.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application belongs to the technical field of smart grid control, and particularly relates to a long-life power control method of an active photovoltaic inverter based on reliability evaluation. The application generates a reliability curve under different power limits of the inverter according to historical meteorological data of the working environment of the inverter and the configuration of the photovoltaic panel connected to the inverter, and selects the power limit of the inverter according to the service life. The method provided by the application is simple and easy to use, can improve the reliability of the inverter according to the working condition of the inverter, and increases the user benefit.
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