Analysis and Enhancement of Low-Voltage Ride-Through Capability of Brushless Doubly Fed Induction Generator

• Published in: IEEE transactions on industrial electronics (1982) Vol. 60; no. 3; pp. 1146 - 1155
• Main Authors: Tohidi, S., Oraee, H., Zolghadri, M. R., Shiyi Shao, Tavner, P.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-03-2013; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Brushless doubly fed induction generator (BDFIG); Circuits; Computer simulation; Dynamics; Electric potential; feasibility region; Generators; Induction generators; Mathematical models; Power system stability; Reactive power; Resistance; ride-through; Rotors; Transient analysis; Voltage; voltage dip; Voltage fluctuations; Windings
• ISSN: 0278-0046; 1557-9948
• DOI: 10.1109/TIE.2012.2190955

This paper discusses the dynamic behavior of the brushless doubly fed induction generator during the grid faults which lead to a decrease in the generator's terminal voltage. The variation of the fluxes, back EMFs, and currents are analyzed during and after the voltage dip. Furthermore, two alternative approaches are proposed to improve the generator ride-through capability using crowbar and series dynamic resistor circuits. Appropriate values for their resistances are calculated analytically. Finally, the coupled circuit model and the generator's speed and reactive power controllers are simulated to validate the theoretical results and the effectiveness of the proposed solutions. Moreover, experiments are performed to validate the coupled circuit model used.