Nonlinear Dynamic Power Tracking of Low-Power Wind Energy Conversion System

Author

Yun Yang ; Kwan-Tat Mok ; Siew-Chong Tan ; Hui, S. Y. Ron

Author_Institution

Dept. of Electr. & Electron. Eng., Univ. of Hong Kong, Hong Kong, China

Volume

30

Issue

9

fYear

2015

fDate

Sept. 2015

Firstpage

5223

Lastpage

5236

Abstract

This paper addresses the use of variable structure control (i.e., sliding mode (SM) control) for improving the dynamic performance of a low-power wind energy conversion system (WECS) that is connected to a dc grid. The SM control is applied to simultaneously match 1) the maximum power generation of the wind turbine system from the wind with 2) the maximum power injection of the grid-connected power converter into the grid. The amount of energy extractable from a dynamically changing wind using the WECS with SM control is compared with that of classic PI control. Both the simulation and experimental results show that more energy can be harvested with the SM control as compared to the PI control for any dynamically changing or random wind conditions.

Keywords

energy harvesting; maximum power point trackers; nonlinear dynamical systems; power generation control; power grids; power system interconnection; variable structure systems; wind power plants; wind turbines; DC grid connected power converter; SM control; dynamic performance improvement; energy harvesting; low power WECS; maximum power generation; maximum power injection; nonlinear dynamic power tracking; random wind conditions; variable structure control; wind energy conversion system; wind turbine system; Pi control; Power conversion; Voltage control; Wind power generation; Wind speed; Wind turbines; Maximum power generation (MPG); Variable structure control; maximum power generation (MPG); maximum power injection (MPI); sliding mode (SM) control; sliding mode control; variable structure control; wind energy conversion system (WECS);

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2014.2363561

Filename

6924774