Title :
A comparative study of direct power control of AC/DC converters for renewable energy generation
Author :
Hu, Jiefeng ; Zhu, JianGuo ; Dorrell, D.G.
Author_Institution :
Sch. of Electr., Mech. & Mechatron. Syst., Univ. of Technol., Sydney, NSW, Australia
Abstract :
Direct power control (DPC) has been proposed and well developed for its distinguished advantages such as simplicity, robustness, excellent steady-state and dynamic response. This paper presents a comparative study of DPC strategies of AC/DC converters for renewable energy generation. First, the advantages and disadvantages of each strategy are given by control theory investigation. In addition, virtual flux concept is studied and a voltage sensorless algorithm for SVM-based predictive DPC is proposed. Furthermore, steady-state and transient performance will be analyzed in simulation in terms of active and reactive power ripples, total distortion harmonic (THD) of line currents, sampling frequency, switching frequency tracking behavior, etc. Finally, a comprehensive comparison is drawn, based on which the most suitable strategy can be chosen according to different applications.
Keywords :
AC-DC power convertors; harmonic distortion; modulation; power control; power generation control; renewable energy sources; AC-DC converters; SVM based predictive DPC; control theory investigation; direct power control; dynamic response; line currents; power ripples; renewable energy generation; sampling frequency; steady state response; switching frequency; total distortion harmonic; tracking behavior; virtual flux concept; voltage sensorless algorithm; DC-DC power converters; Reactive power; Switches; Switching frequency; Transient analysis; Vectors; Voltage control;
Conference_Titel :
IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-61284-969-0
DOI :
10.1109/IECON.2011.6119890