Model predictive control of three-phase voltage-source converters with improved tracking performance

Hui Wang; Xida Chen; Yonglu Liu; Mei Su; Weiquan Feng; Wenjie Yu

doi:10.1016/j.isatra.2022.07.012

Model predictive control of three-phase voltage-source converters with improved tracking performance

ISA Trans. 2023 Feb:133:424-434. doi: 10.1016/j.isatra.2022.07.012. Epub 2022 Jul 19.

Authors

Hui Wang¹, Xida Chen², Yonglu Liu³, Mei Su⁴, Weiquan Feng⁵, Wenjie Yu⁶

Affiliations

¹ Hunan Provincial Key Laboratory of Power Electronics Equipment and Grid, School of Automation, Central South University, Changsha 410083, China. Electronic address: wanghuicp9@csu.edu.cn.
² Hunan Provincial Key Laboratory of Power Electronics Equipment and Grid, School of Automation, Central South University, Changsha 410083, China. Electronic address: xida.chen_csu@csu.edu.cn.
³ Hunan Provincial Key Laboratory of Power Electronics Equipment and Grid, School of Automation, Central South University, Changsha 410083, China. Electronic address: liuyonglu@csu.edu.cn.
⁴ Hunan Provincial Key Laboratory of Power Electronics Equipment and Grid, School of Automation, Central South University, Changsha 410083, China. Electronic address: sumeicsu@csu.edu.cn.
⁵ Hunan Provincial Key Laboratory of Power Electronics Equipment and Grid, School of Automation, Central South University, Changsha 410083, China. Electronic address: weiquan.feng@csu.edu.cn.
⁶ Hunan Provincial Key Laboratory of Power Electronics Equipment and Grid, School of Automation, Central South University, Changsha 410083, China. Electronic address: 1249587734@qq.com.

PMID: 35918199
DOI: 10.1016/j.isatra.2022.07.012

Abstract

The conventional finite control set-model predictive control (FCS-MPC) has not been completely embraced by the power industry because of large tracking errors and the high required sampling frequency. Therefore, the double-vector-based model predictive control (DVB-MPC), which enfolds the deadbeat control (DBC) theory, has gradually crept into researchers' horizons in recent years. In the universal DVB-MPC (UDVB-MPC) scheme, selecting two operation vectors in a single sector is a major obstacle to achieving satisfactory tracking performance. There is still a biggish error between the synthesized output voltage and the reference value. To alleviate this issue, this paper proposes an improved double-vector-based model predictive control (IDVB-MPC) scheme. The tracking errors are reduced dramatically by adding two extra vectors in adjacent sectors to the candidate set and dividing a sector into eight zones. Then the power fluctuation is reduced and the grid-connected current quality is improved. To verify the effectiveness of the proposed scheme, the simulation and experiment comparisons between UDVB-MPC and IDVB-MPC are carried out. The results show that IDVB-MPC reduces the quantitative tracking errors, the THD of the output currents, and the quantitative active power ripple by about 50%, 20%, and 35% with UDVB-MPC as a benchmark, respectively.

Keywords: Model predictive control; Tracking error; Voltage-source converter.

MeSH terms

Computer Simulation
Computer Systems*