Predictive direct power control of three-phase three-level four-leg unified power quality conditioner. (18th October 2021)

• Record Type: Journal Article
• Authors: Bouzidi, Mansour; Barkat, Said
• Is Part Of: International journal of power electronics. Volume 14:Number 4(2021)
• Page Start: 446
• Page End: 469
• Publication Date: 2021-10-18
• Subjects: direct power control -- DPC -- four-wire unified power quality conditioner -- power quality enhancement -- predictive direct power control -- three-dimensional space vector modulation -- 3DSVM -- three-level four-leg inverter; Power electronics -- Periodicals; 621.31705
• Languages: English
• ISSNs: 1756-638X

Abstract

In this paper, a predictive direct power control for three-phase three-level four-leg unified power quality conditioner (UPQC) has been proposed. The proposed three-level four-leg UPQC is capable of simultaneous compensation for supply voltage and load current disturbances. The predictive active and reactive power controllers were synthesised using a new predictive model of four-leg UPQC. In addition, a new algorithm of three-level three-dimensional space vector modulation (3DSVM) was proposed to control a three-level four-leg inverter. The idea is to perform the different steps of 3DSVM in only one sector. Furthermore, the voltage-balancing control of common DC capacitors was achieved by controlling the shunt converter using a three-level 3DSVM equipped by a balancing strategy. Finally, the proposed control method of the three-level four-leg UPQC was verified and compared with direct power control (DPC) through simulation using MATLAB/Simulink under different operating conditions.