Title :
A Novel Sensorless Unity Power Factor Control Method for Six-phase PMSG in Direct Drive Wind Energy Conversion Systems
Author :
Hu, Weihao ; Wang, Yue ; Song, Xianwen ; Wang, Zhaoan
Author_Institution :
Xi´´an Jiaotong Univ., Xi´´an
Abstract :
In the high power direct drive wind energy conversion systems, the power factors of both the generator-side converter and the grid-side converter are controlled to one in order to make full use of the capability of the power converters. In this paper, a novel sensorless unity power factor control method based on the reference coordinate system rotating synchronously with the voltage of the generator-side converter is proposed to estimate the rotor speed of the six-phase PMSG. This method is very simple and only needs the measurement of the voltage phase of the generator-side converter. The power factor of the generator-side converter can be controlled to one easily and it can increase the capability of the converter. Simulation and experimental results verify the analysis and the conclusion.
Keywords :
electric drives; machine control; permanent magnet generators; power control; power convertors; power factor; synchronous generators; wind power plants; direct drive wind energy conversion systems; generator-side converter; grid-side converter; permanent magnet synchronous generator; reference coordinate system; sensorless unity power factor control method; voltage phase measurement; Control systems; Mesh generation; Power generation; Reactive power; Rotors; Sensorless control; Synchronous generators; Voltage control; Wind energy; Wind energy generation; PMSG; Sensorless control; Unity power factor; Wind energy;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2009. APEC 2009. Twenty-Fourth Annual IEEE
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4244-2811-3
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2009.4802744
