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Sliding mode predictive control of a five-level rectifier with only four–IGBT

Yifeng Zhu (Department of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo, China)
Ziyang Zhang (Department of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo, China)
Hailong Zhao (Department of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo, China)
Shaoling Li (Department of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo, China)

Circuit World

ISSN: 0305-6120

Article publication date: 29 September 2022

Issue publication date: 9 January 2024

53

Abstract

Purpose

Five-level rectifiers have received widespread attention because of their excellent performance in high-voltage and high-power applications. Taking a five-level rectifier with only four-IGBT for this study, a sliding mode predictive control (SMPC) algorithm is proposed to solve the problem of poor dynamic performance and poor anti-disturbance ability under the traditional model predictive control with the PI outer loop.

Design/methodology/approach

First, mathematical models under the two-phase stationary coordinate system and two-phase synchronous rotating coordinate system are established. Then, the design of the outer-loop sliding mode controller is completed by establishing the sliding mode surface and design approach rate. The design of the inner-loop model predictive controller was completed by discretizing the mathematical model equations. The modulation part uses a space vector modulation technique to generate the PWM wave.

Findings

The sliding mode predictive control strategy is compared with the control strategy with a PI outer loop and a model predictive inner loop. The proposed control strategy has a faster dynamic response and stronger anti-interference ability.

Originality/value

For the five-level rectifier, the advantages of fast dynamic influence and parameter insensitivity of sliding mode control are used in the voltage outer loop to replace the traditional PI control, and which is integrated with the model predictive control used in the current inner loop to form a novel control strategy with a faster dynamic response and stronger immunity to disturbances. This novel strategy is called sliding mode predictive control (SMC).

Keywords

Acknowledgements

This work was supported in part by the National Natural Science Foundation of China under Grant (U1504518), and in part by Henan mine power electronics device and control innovative technology team under Grant CXTD2017085, Science and Technology Planning Project of Henan Province of China under Grant 192102210228.

Citation

Zhu, Y., Zhang, Z., Zhao, H. and Li, S. (2024), "Sliding mode predictive control of a five-level rectifier with only four–IGBT", Circuit World, Vol. 50 No. 1, pp. 45-53. https://doi.org/10.1108/CW-05-2022-0125

Publisher

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Emerald Publishing Limited

Copyright © 2022, Emerald Publishing Limited

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