Overview of research and development status of brushless doubly-fed machine system

Abstract

The brushless doubly-fed machine (BDFM) has been widely used due to its advantages of robustness, reliable operation, ease of maintenance, adjustable power factor, small converter capacity and low cost. BDFM is attractive for use in many applications such as variable frequency speed regulation systems and variable speed constant frequency generation systems. Hence, there is a rapidly growing interest in design and control of BDFM. In this paper, the origin and development of BDFM are reviewed, the structural characteristics of BDFM are discussed at length, the principles of operation and design are analyzed, and the different control methods used for BDFM are overviewed and compared in detail. Finally, challenges and opportunities ofBDFM are concluded.