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Title: Improved inertial control for permanent magnet synchronous generator wind turbine generators

Abstract

With increasing integrations of large-scale systems based on permanent magnet synchronous generator wind turbine generators (PMSG-WTGs), the overall inertial response of a power system will tend to deteriorate as a result of the decoupling of rotor speed and grid frequency through the power converter as well as the scheduled retirement of conventional synchronous generators. Thus, PMSG-WTGs can provide value to an electric grid by contributing to the system's inertial response through the inherent kinetic energy stored in their rotating masses and fast power converter control. In this study, an improved inertial control method based on the maximum power point tracking operation curve is introduced to enhance the overall frequency support capability of PMSG-WTGs in the case of large supply-demand imbalances. Moreover, this method is implemented in the CART2-PMSG integrated model in MATLAB/Simulink to investigate its impact on the wind turbine's structural loads during the inertial response process. Simulation results indicate that the proposed method can effectively reduce the frequency nadir, arrest the rate of change of frequency, and alleviate the secondary frequency dip while imposing no negative impact on the major mechanical components of the wind turbine.

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1345060
Report Number(s):
NREL/JA-5D00-66544
Journal ID: ISSN 1752-1416
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article
Journal Name:
IET Renewable Power Generation
Additional Journal Information:
Journal Volume: 10; Journal Issue: 9; Journal ID: ISSN 1752-1416
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; 24 POWER TRANSMISSION AND DISTRIBUTION; inertial control; permanent magnet synchronous generator; PMSG; wind turbine generators; WTG

Citation Formats

Wu, Ziping, Gao, Wenzhong, Wang, Xiao, Kang, Moses, Hwang, Min, Kang, Yong Cheol, Gevogian, Vahan, and Muljadi, Eduard. Improved inertial control for permanent magnet synchronous generator wind turbine generators. United States: N. p., 2016. Web. doi:10.1049/iet-rpg.2016.0125.
Wu, Ziping, Gao, Wenzhong, Wang, Xiao, Kang, Moses, Hwang, Min, Kang, Yong Cheol, Gevogian, Vahan, & Muljadi, Eduard. Improved inertial control for permanent magnet synchronous generator wind turbine generators. United States. doi:10.1049/iet-rpg.2016.0125.
Wu, Ziping, Gao, Wenzhong, Wang, Xiao, Kang, Moses, Hwang, Min, Kang, Yong Cheol, Gevogian, Vahan, and Muljadi, Eduard. Tue . "Improved inertial control for permanent magnet synchronous generator wind turbine generators". United States. doi:10.1049/iet-rpg.2016.0125.
@article{osti_1345060,
title = {Improved inertial control for permanent magnet synchronous generator wind turbine generators},
author = {Wu, Ziping and Gao, Wenzhong and Wang, Xiao and Kang, Moses and Hwang, Min and Kang, Yong Cheol and Gevogian, Vahan and Muljadi, Eduard},
abstractNote = {With increasing integrations of large-scale systems based on permanent magnet synchronous generator wind turbine generators (PMSG-WTGs), the overall inertial response of a power system will tend to deteriorate as a result of the decoupling of rotor speed and grid frequency through the power converter as well as the scheduled retirement of conventional synchronous generators. Thus, PMSG-WTGs can provide value to an electric grid by contributing to the system's inertial response through the inherent kinetic energy stored in their rotating masses and fast power converter control. In this study, an improved inertial control method based on the maximum power point tracking operation curve is introduced to enhance the overall frequency support capability of PMSG-WTGs in the case of large supply-demand imbalances. Moreover, this method is implemented in the CART2-PMSG integrated model in MATLAB/Simulink to investigate its impact on the wind turbine's structural loads during the inertial response process. Simulation results indicate that the proposed method can effectively reduce the frequency nadir, arrest the rate of change of frequency, and alleviate the secondary frequency dip while imposing no negative impact on the major mechanical components of the wind turbine.},
doi = {10.1049/iet-rpg.2016.0125},
journal = {IET Renewable Power Generation},
issn = {1752-1416},
number = 9,
volume = 10,
place = {United States},
year = {2016},
month = {5}
}