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| Sliding Mode Model Predictive Control of Single-Phase Five-Level Rectifier |
| Zhu Yifeng, Zhao Hailong, Zhang Guopeng, Tao Haijun, Li Shaoling |
| School of Electrical Engineering and Automation Henan Polytechnic University Jiaozuo 454003 China |
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Abstract Five level rectifier is widely used in high voltage power transmission and transformation because of its high power output capacity and low harmonic current at the grid side. The traditional model with PI control has poor dynamic performance and poor disturbance resistance when predicting the outer ring. Therefore, this paper proposes a sliding-mode model-predictive control (SMMPC) algorithm. Firstly, the working principle of the rectifier is analyzed, and the mathematical models for outer ring and inner ring control are established. Then, a sliding mode model predictive control algorithm is designed in detail for the rectifier. Both simulation and experimental results show that the sliding mode model prediction algorithm not only retains the advantages of fixed switch frequency and small delay error, but also has faster dynamic response and stronger anti-disturbance ability than PI model prediction control.
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Received: 05 February 2021
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2022, Vol. 37 
