Direct Power Control of Doubly-Fed Generator Based Wind Turbine Converters to Improve Low Voltage Ride-Through during System Imbalance

Abstract

A novel control technique using direct active and reactive power control called Direct Power Control (DPC) is discussed for Low Voltage Ride Through (LVRT) of DFIG based wind turbine converters. This controller eliminates the conventional current loops and uses delta modulation comparators, which yields a faster response. The switching of the converter is done using a simple optimum switching table. This control achieves real and reactive power stability with simple active and reactive power control variables. A modified DPC algorithm is proposed to eliminate the current harmonics created by DPC during system disturbances. The practical verification of DPC is carried out by a scaled converter. The control is coded in C and implemented on a TMS320F2812 DSP. The converter using DPC is tested for system unbalance conditions created by an Industrial Power Corruptor (IPC) in the laboratory.

Meeting Name

25th Annual IEEE Applied Power Electronics Conference and Exposition (2010: Feb. 21-25, Palm Springs, CA)

Department(s)

Electrical and Computer Engineering

Keywords and Phrases

Control Techniques; Conventional Currents; Current Harmonics; DFIG-Based Wind Turbines; Direct Power Control; Doubly-Fed; Industrial Power; Low-Voltage Ride-Through; Optimum Switching; Real And Reactive Power; System Disturbances; System Unbalance; TMS320F2812; Electric Generators; Modulators; Power Control; Power Electronics; Real Variables; Wind Power; Wind Turbines; Reactive Power

International Standard Book Number (ISBN)

978-1424447824

International Standard Serial Number (ISSN)

1048-2334

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2010 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Feb 2010

Link to Full Text

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