Three-phase rectifying circuit control method based on sliding mode predictive control and charging pile

Through the three-phase rectifier circuit control method based on sliding mode prediction control, combined with super-spiral sliding mode and three-vector model prediction control, the lack of dynamic performance and steady-state response of the three-phase rectifier circuit in electric vehicle charging piles is solved, and the stability and rapid response are improved, reducing the computing burden.

CN120512002AActive Publication Date: 2025-08-19ZHONGSHAN BAOLIJIN ELECTRONICS
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Patent Information

Application Number
CN202511005256.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-21
Publication Date
2025-08-19
Estimated Expiration
2045-07-21

AI Technical Summary

Technical Problem

The existing three-phase rectifier circuit control method is difficult to meet the requirements of dynamic performance and steady-state response in electric vehicle charging piles. The PI control is poorly robust, and the vibration caused by sliding mode control affects the power quality and system stability.

Method used

A three-phase rectifier circuit control method based on sliding mode prediction control is adopted, combined with the super-spiral sliding mode control algorithm and three-vector model prediction control, by constructing a rectifier circuit model, voltage and current components are obtained, switching state is optimized using the cost function, and event trigger conditions are introduced to reduce calculations.

Benefits of technology

It realizes global stability and large-scale disturbance suppression, fast response and multivariate optimization control, overcomes vibration problems, improves the system's anti-interference and response speed, and reduces computing needs.

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Abstract

The invention relates to the technical field of rectification circuit control, in particular to a three-phase rectification circuit control method based on sliding-mode predictive control and a charging pile, and the method comprises the steps: obtaining a sliding-mode control law through employing a super-spiral sliding-mode control algorithm in outer-loop voltage regulation, and taking the sliding-mode control law as an active power reference value; in inner loop current control, voltage components and current components of three-phase alternating voltage in a two-phase rotating coordinate system are obtained through coordinate system transformation, and active power and reactive power at the future moment are obtained through a discretization prediction model; and performing rolling optimization by the cost function to obtain the optimal switching state at the current moment, updating the controller according to the optimal switching state, and performing prediction control on each switching device of the three-phase rectification circuit through the updated controller. According to the three-phase rectification circuit control method based on sliding mode predictive control, stable reference voltage can be provided, output is stable, the disturbance suppression capacity is high, and quick response and multivariable optimization control are achieved.
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