Performance analysis and testing of a 250 kW medium‐speed brushless doubly‐fed induction generator

This study presents the performance analysis and testing of a 250 kW medium‐speed brushless doubly‐fed induction generator (DFIG), and its associated power electronics and control systems. The experimental tests confirm the design, and show the system's steady‐state and dynamic performance and grid low‐voltage ride‐through capability. The medium‐speed brushless DFIG in combination with a simplified two‐stage gearbox promises a low‐cost low‐maintenance and reliable drivetrain for wind turbine applications.