Operation and Control of Stand-alone Brushless Doubly Fed Induction Generator Using Control Winding Side Converters

Abstract

The brushless doubly fed induction generator has wide applications as a stand-alone variable-speed constant-frequency generator in some embedded generation systems. In this article, a controller for a stand-alone brushless doubly fed induction generator using control winding side converters is introduced, which was implemented as a ship shaft generation system located in a container ship. The primary goal of the control system is to obtain constant output voltage and frequency of the brushless doubly fed induction generator, regardless of the load and speed condition variation. The main obstruction of working with the brushless doubly fed induction generator is its inherent complexity. To overcome this problem, the mathematical description, power flow, and performance evaluation of the stand-alone brushless doubly fed induction generator is comprehensively developed and analyzed. The experiments presented in this article were implemented on a 2/6-pole 250-frame-size wound-rotor brushless doubly fed induction generator.

Keywords:

• brushless doubly fed
• stand-alone
• mathematical description
• performance evaluation

Additional information

Notes on contributors

Xin Chen

Xin Chen was born in Jingzhou, China, in 1989. He received his bachelor's degree from the State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, in 2010, where he is presently pursuing his Ph.D. His research includes wound-rotor brushless doubly fed machine design and control.

Xuefan Wang

Xuefan Wang was born in Wuhan, China, in 1954. He received his Ph.D. in electrical engineering from Huazhong University of Science and Technology, China, in 1988. He is presently a professor in the same university. His research interests include electrical machines and power electronics, particularly for wound-rotor brushless doubly fed machine design and application.