Output conversion system and method for UPS (Uninterrupted Power Supply)

Through the multi-path control architecture and intelligent control strategy, the switching delay and interference problems of UPS uninterruptible power supply under grid fluctuations and load sudden changes are solved, and fast and reliable energy transmission and fault prediction are achieved, improving power quality and equipment reliability.

CN120454292AInactive Publication Date: 2025-08-08SHENZHEN STONE ELECTRIC CO LTD
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Patent Information

Application Number
CN202510594382.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-09
Publication Date
2025-08-08
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The output conversion system of the existing UPS uninterruptible power supply has problems such as switching delay, insufficient transient interference control, inefficient coordination of energy storage components, weak fault prediction capabilities, and insufficient coupling interference suppression of switching processes when facing complex power grid fluctuations and sudden load changes, making it difficult to meet the stringent power supply requirements of precision medical equipment and industrial control systems.

Method used

Using a multi-path control architecture and deep collaboration intelligent control strategy, through the combination of a central processor, switching execution unit, energy storage module, real-time monitoring module and dynamic switching unit, multi-path redundant signal generation, hybrid energy storage optimization, contact state prediction and electromagnetic interference suppression are realized, and an orthogonal control signal redundant instruction set is constructed to optimize the energy transmission path.

Benefits of technology

It realizes seamless switching at submillisecond level, delays the performance decay of energy storage components, improves equipment reliability and dynamic response capabilities, eliminates transient overvoltage coupling propagation, and meets high-frequency load requirements.

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Abstract

The invention discloses an output conversion system and method for a UPS (Uninterrupted Power Supply), and the system comprises a main power input end which is connected with a bridge rectifier through a first electromagnetic relay; the energy storage module comprises a super capacitor group and a parallel lithium battery group, and is coupled with the bus capacitor through a bidirectional DC / DC converter; the input end of the multi-path regulation and control module is connected with the bus voltage sensor, and the output end is connected with the switching execution unit through a second electromagnetic relay group; the dynamic switching unit comprises an I-GBT matrix and a reverse blocking diode array which are respectively connected with the inverter and the bypass circuit in parallel; and the real-time monitoring module is provided with a current harmonic analysis unit and a load break variable detection unit, and the output end of the real-time monitoring module is connected with the ADC port of the central processor. According to the invention, systematic improvement is realized in three dimensions of electric energy quality guarantee, equipment reliability and dynamic response capability through an original multi-path regulation and control architecture and a deep cooperative intelligent control strategy.
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