Improved Voltage-Vector Sequences on Dead-Beat Predictive Direct Power Control of Reversible Three-Phase Grid-Connected Voltage-Source Converters

• Published in: IEEE transactions on power electronics Vol. 28; no. 1; pp. 254 - 267
• Main Authors: Jiabing Hu, Zhu, Z. Q.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.01.2013; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Control systems; Convertors; Dead-beat; direct power control (DPC); duration time; Electric currents; Electrical engineering. Electrical power engineering; Electrical machines; Electricity generation; Electronic equipment and fabrication. Passive components, printed wiring boards, connectics; Electronics; Exact sciences and technology; Power conversion; Power electronics, power supplies; Power supply; predictive; Reactive power; Regulation and control; Switches; vector sequences; Vectors; Voltage control; voltage-source converter (VSC); Inverter; Rectifier; Direct digital control; Control system; Grid-connected system; predictive; vector sequences; Power electronics; Experimental study; Dead beat control; Voltage source converter; Reactive power; Dead-beat; duration time; Power control; voltage-source converter (VSC); Three phase circuit; Feasibility; direct power control (DPC); Comparative study; Predictive control
• ISSN: 0885-8993; 1941-0107
• DOI: 10.1109/TPEL.2012.2194512

This paper presents a dead-beat predictive direct power control (DPC) strategy and its improved voltage-vector sequences for reversible three-phase grid-connected voltage-source converters (VSCs). The instantaneous variation rates of active and reactive powers, by applying each converter voltage vector in 12 different sectors, are deduced and analyzed. Based on the power variation rates, it is found that the values of the predicted duration times for the two conventional active converter voltage vectors are less than zero when the grid-connected VSC operates as either a rectifier or an inverter. In order to solve this issue, two new alternative vector sequences are proposed and compared. Experimental results on a 1.5 kW reversible grid-connected VSC system are presented to validate the feasibility of the proposed voltage-vector sequences on the dead-beat predictive DPC strategy.