Developing a New SVPWM Control Strategy for Open-Winding Brushless Doubly Fed Reluctance Generators

• Main Authors: Zhang, Fengge (Author), Zhu, Liancheng (Author), Jin, Shi (Author), Wang, Dairui (Author), Cao, Wenping (Contributor), Kirtley Jr, James L (Contributor)
• Other Authors: Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science (Contributor), Massachusetts Institute of Technology. Research Laboratory of Electronics (Contributor), Kirtley, James (Contributor)
• Format: Article
• Language: English
• Published: 2017-04-26T19:17:50Z.
• Subjects: Article
• Online Access: Get fulltext

In this paper, a new open-winding control strategy is proposed for a brushless doubly fed reluctance generator (BDFRG) used for stand-alone wind turbine or ship generators. The BDFRG is characterized with two windings on the stator: a power winding and a control winding. The control winding is fed with dual two-level three-phase converters, and a vector control scheme based on space vector pulsewidth modulation is designed. Compared with traditional three-level inverter systems, the dc-link voltage and the voltage rating of power devices in the proposed system are reduced by 50% while still greatly improving the reliability, redundancy, and fault tolerance of the proposed system by increasing the switching modes. Its performance is evaluated by simulation in MATLAB/Simulink and an experimental study on a 42-kW prototype machine.