A high voltage battery energy storage power converter optimization system and method

Through operating condition simulation, loss calculation and comprehensive analysis of the high-voltage battery energy storage power converter optimization system, the comprehensive optimization problems of loss, midpoint voltage control and output harmonics in the 1500V high-voltage battery energy storage system were solved, realizing the efficient operation and compact design of the converter.

CN114785170BActive Publication Date: 2026-06-09CHINA EPRI ELECTRIC POWER ENG CO LTD +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA EPRI ELECTRIC POWER ENG CO LTD
Filing Date
2022-04-11
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing technologies make it difficult to achieve comprehensive optimization design of losses, midpoint voltage control and output harmonics in 1500V high-voltage battery energy storage systems. They also cannot calculate converter losses under different modulation methods and load characteristics online, making it difficult to achieve converter loss optimization and compact structural design.

Method used

A high-voltage battery energy storage power converter optimization system is provided, including an operating condition simulation unit, a loss calculation unit, and a comprehensive analysis unit. Through metastable state simulation, loss calculation, and comprehensive optimization, it integrates comprehensive optimization of loss, harmonics, and neutral point voltage control.

Benefits of technology

The system achieves comprehensive optimization of loss, harmonics, and neutral point voltage control of the high-voltage battery energy storage power converter in a metastable state simulation environment, thereby improving system efficiency and equipment compactness.

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Abstract

The application relates to the technical field of optimization control of energy storage power converters, and particularly provides a high-voltage battery energy storage power converter optimization system and method, which comprises a working condition simulation module, a loss calculation module and a comprehensive analysis module; the working condition simulation unit is used for performing transient state simulation on the high-voltage battery energy storage power converter; the loss calculation unit is used for calculating the loss of the high-voltage battery energy storage power converter in the transient state simulation environment; and the comprehensive analysis unit is used for comprehensively optimizing the high-voltage battery energy storage power converter based on the loss of the high-voltage battery energy storage power converter in the transient state simulation environment. The technical scheme provided by the application can provide a basis for three-level converter control, modulation strategy algorithm selection, device parameter selection and thermal design.
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