Method and system for constructing digital twinborn model of three-phase bridge-type phase-controlled converter

By constructing a fully digital model of a three-phase bridge phased converter and using particle swarm optimization algorithm for parameter identification, the dynamic adjustment problem of the digital twin model of a three-phase bridge phased converter is solved, high-fidelity simulation and circuit parameter monitoring are realized, and the accuracy of state perception and control strategies is improved.

CN120597802APending Publication Date: 2025-09-05BEIJING JIAOTONG UNIV
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Patent Information

Application Number
CN202510606241.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-12
Publication Date
2025-09-05

AI Technical Summary

Technical Problem

In the prior art, the construction of the digital twin model of three-phase bridge phased converter has the problem that parameters cannot be dynamically adjusted and additional equipment needs to be added, resulting in the inefficient state perception and parameter monitoring.

Method used

By constructing a fully digital model of a three-phase bridge phase-controlled converter, using the measured values ​​and digital simulation values ​​of the three-phase input current and output current, a particle swarm optimization algorithm is used for parameter identification, and a digital twin model is established to realize the evolution from a full digital model to a digital twin model.

Benefits of technology

Without the need for additional parameter measurement sensors, high-fidelity simulation and circuit parameter monitoring of three-phase bridge phased converters are realized, improving operational reliability and accuracy of control strategies.

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Abstract

The invention discloses a digital twin model construction method and system for a three-phase bridge-type phase-controlled converter, and the method comprises the steps: building a full-digital model of the three-phase bridge-type phase-controlled converter according to the initial parameters of the three-phase bridge-type phase-controlled converter; respectively acquiring measured values of three-phase input current and output current from the three-phase bridge-type phase-controlled converter, acquiring digital simulation values of the three-phase input current and output current from the all-digital model, and identifying current parameters of the three-phase bridge-type phase-controlled converter according to the measured values and the digital simulation values. And updating the current parameters to the all-digital model to obtain a digital twinborn model of the three-phase bridge-type phase-controlled converter. By implementing the technical scheme of the invention, the construction of the digital twinborn model of the three-phase bridge-type phase-controlled converter is realized on the premise of not additionally adding a parameter measurement sensor.
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