Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Spread current spectrum method based on model predictive control with double sampling

  • Sanghun Han (Department of Electrical and Electronics Engineering, Konkuk University) ;
  • Seungil Choi (Department of Electrical and Electronics Engineering, Konkuk University) ;
  • Younghoon Cho (Department of Electrical and Electronics Engineering, Konkuk University)
  • Received : 2022.09.15
  • Accepted : 2022.10.05
  • Published : 2023.01.20
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Abstract

This paper proposes a model predictive control (MPC) with a double-sampling technique to spread the current spectrum. Finite control set MPC has the characteristic of a switching frequency that fuctuates. Thus, the components of the switching frequency and harmonics are reduced in the current spectrum. When MPC is utilized to control current, virtual vectors are added to ensure a low current total harmonic distortion (THD). However, increasing the voltage vector reduces the switching frequency variation, which leads to degradation of the spread-spectrum performance. The proposed method allows MPC to have an additional feature to change the harmonic components while reducing the current THD. To verify the proposed scheme, a comparison of its performance according to the sampling techniques and number of the voltage vectors has been conducted. The simulation and experimental results demonstrate the efectiveness of the proposed method.

Keywords

Acknowledgement

This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No.2021R1A5A1031868). This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (No. 20206910100160).

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