<abstract xmlns="http://www.w3.org/1999/xhtml"><p> This paper presents a control model design capable of inhibiting the phenomenal rise in the DC-link voltage during grid- fault condition in a variable speed wind turbine. Against the use of power circuit protection strategies with inherent limitations in fault ride-through capability, a control circuit algorithm capable of limiting the DC-link voltage rise which in turn bears dynamics that has direct influence on the characteristics of the rotor voltage especially during grid faults is here proposed. The model results so obtained compare favorably with the simulation results as obtained in a MATLAB/SIMULINK environment. The generated model may therefore be used to predict near accurately the nature of DC-link voltage variations during fault given some factors which include speed and speed mode of operation, the value of damping resistor relative to half the product of inner loop current control bandwidth and the filter inductance.</p></abstract>

This paper presents a control model design capable of inhibiting the phenomenal rise in the DC-link voltage during grid- fault condition in a variable speed wind turbine. Against the use of power circuit protection strategies with inherent limitations in fault ride-through capability, a control circuit algorithm capable of limiting the DC-link voltage rise which in turn bears dynamics that has direct influence on the characteristics of the rotor voltage especially during grid faults is here proposed. The model results so obtained compare favorably with the simulation results as obtained in a MATLAB/SIMULINK environment. The generated model may therefore be used to predict near accurately the nature of DC-link voltage variations during fault given some factors which include speed and speed mode of operation, the value of damping resistor relative to half the product of inner loop current control bandwidth and the filter inductance.

Control model design to limit DC-link voltage during grid fault in a dfig variable speed wind turbine

Journal of Electrical Engineering

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

This paper presents a control model design capable of inhibiting the phenomenal rise in the DC-link voltage during grid- fault condition in a variable speed...

Control model design to limit DC-link voltage during grid fault in a dfig variable speed wind turbine

Published Online: Sep 13, 2017

Page range: 274 - 281

Received: Oct 06, 2016

DOI: https://doi.org/10.1515/jee-2017-0039

Keywords
active damping, DC-link voltage, virtual resistor, control loop bandwidth

© Faculty of Electrical Engineering and Information Technology, Slovak University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Control model design to limit DC-link voltage during grid fault in a dfig variable speed wind turbine

Published Online: Sep 13, 2017

Page range: 274 - 281

Received: Oct 06, 2016

DOI: https://doi.org/10.1515/jee-2017-0039

Keywordsactive damping, DC-link voltage, virtual resistor, control loop bandwidth

© Faculty of Electrical Engineering and Information Technology, Slovak University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
active damping, DC-link voltage, virtual resistor, control loop bandwidth