Influence of Different Series Dynamic Resistors on Low-voltage Ride-through of Brushless Doubly Fed Induction Generator

Abstract

Abstract—The brushless doubly fed induction generator has been proposed for use in wind turbines as a more reliable alternative to the more commonly used doubly fed induction generator. To realize the commercial promises of the brushless doubly fed induction generator in this role, it must meet the existing grid connection codes, particularly with respect to low-voltage ride-through. In this article, the application of series dynamic resistors is proposed to enhance brushless doubly fed induction generator low-voltage ride-through capability, and the required analysis is provided. Three locations for series dynamic resistors are suggested in the brushless doubly fed induction generator circuit and are compared to each other from various points of view, e.g., their impact on current peaks and reactive power generation. Furthermore, modal analysis is performed to check the impact of series dynamic resistors on the damping of power winding and control winding dynamics. The validity of the analysis and the effectiveness of the proposed approach are confirmed via time-domain simulations.

Keywords:

• brushless doubly fed induction generator
• wind turbine
• low-voltage ride-through
• fault ride-through
• series dynamic resistor
• reactive power
• grid code requirements

Appendix

Prototype D180 BDFM specifications

Table

Additional information

Notes on contributors

Sajjad Tohidi

Sajjad Tohidi was born in Meshkin Shahr, Iran, in 1984. He received his B.Sc. from Iran University of Science and Technology, Tehran, Iran, in 2006 and his M.Sc. and Ph.D. from Sharif University of Technology, Tehran, Iran, in 2008 and 2012, respectively, all in electrical engineering. He is currently an assistant professor of electrical engineering at University of Tabriz, Tabriz, Iran. His research interests include electrical machines, wind turbines and their connection to the grid, and power systems dynamics.

Hashem Oraee

Hashem Oraee received his B.Eng. (with first-class honors) in electrical and electronic engineering from University of Wales, Cardiff, UK, in 1980 and his Ph.D. in electrical machines from University of Cambridge, UK, in 1984. He is currently a professor of electrical engineering at Sharif University of Technology in Iran. His research interests include electrical energy conversion and power quality.

Mohammad Reza Zolghadri

Mohammad Reza Zolghadri received his B.Sc. and M.Sc. from Sharif University of Technology, Tehran, Iran, in 1989 and 1992, respectively, and his Ph.D. from the Institute National Polytechnique de Grenoble, Grenoble, France, in 1997, all in electrical engineering. Since 1997, he has been with the College of Electrical Engineering, Sharif University of Technology. From 2000 to 2003, he was a senior researcher in the Electronics Laboratory, SAM Electronics Company, Tehran. His current research interests include application of power electronics in energy systems.

Peter J. Tavner

Peter J. Tavner is an emeritus professor at Durham University. Receiving his M.A. and Ph.D. from Cambridge & Southampton Universities, respectively, he has held senior manufacturing industry positions, including Group Technical Director, FKI Energy Technology. Joining the university in 2003, he has been the principal investigator of the Supergen Wind Consortium. He is a fellow of the Institution of Engineering Technology and winner of the IET Institution Premium. His research interests include electrical machines for the extraction of energy from renewable sources and their connection to electricity systems, electromagnetic analysis, the application of condition monitoring to electrical systems, and the use of converters with electrical machines.