A hybrid energy storage system power coordination control method

By employing a dynamic power coordination control method that identifies the internal resistance of supercapacitor banks and the nonlinear mapping smoothing coefficient online, the problems of static control parameters and unstable state transitions in hybrid energy storage systems are solved, thereby achieving stable power regulation and safe operation of the system.

CN122159327AActive Publication Date: 2026-06-05CHENGDU SHENRUITONGHUA TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGDU SHENRUITONGHUA TECH CO LTD
Filing Date
2026-05-06
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

In the existing power coordination control of hybrid energy storage systems, the control parameters are static, the state transition is not smooth, and there is a lack of perception and adaptation to changes in the internal resistance of the supercapacitor bank, which leads to unbalanced power distribution and sudden changes, affecting the efficient and stable operation of the system.

Method used

By receiving power regulation commands from the power grid and judging their effectiveness, monitoring the system status, using the recursive least squares method to identify the equivalent series internal resistance of the supercapacitor bank online, calculating the dynamic power limit value and nonlinear mapping smoothing coefficient, performing initial power allocation and smoothing processing, and combining real-time status correction, dynamic power coordination control is achieved.

Benefits of technology

It achieves smooth power regulation of the hybrid energy storage system, suppresses power switching shocks, ensures system safety and stability, adapts to power commands and state changes, and improves response speed and smoothness.

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Abstract

The application relates to the technical field of electric power energy storage control systems, in particular to a hybrid energy storage system power coordination control method, which generates a dynamic power limiting value by online identification of the equivalent series internal resistance of a super capacitor group, calculates a state of charge change rate in real time to determine a nonlinear power smoothing coefficient, and performs first-order low-pass filtering smoothing processing and real-time deviation closed-loop correction on the initial power distribution result based on the dynamic power limiting value and the power smoothing coefficient, so that power coordination control is realized. The application solves the technical problems of existing technologies, such as static control parameters, unstable state transition, lack of perception and adaptation to the internal resistance change of the super capacitor group, and the like.
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