Digital platform design for Magnetically suspended Bearings equipped for wind turbine based on DSP28335+FPGA

In order to use the wind energy more efficiently in wind turbine system, Active Magnetically suspended Bearings (AMBs) are equipped to eliminate the friction of the mechanical bearings. In the traditional analogue PID controller of AMBs control system, it has the shortcomings of inconvenient in parameters adjustment, low control resolution, difficulty to change hardware structure and realize advanced control algorithms. This digital platform is to enable the implementation of new and more complex control algorithms for Active Magnetically suspended Bearings (AMBs) equipped for wind turbine generator. This paper presents the design, implementation of a novel real-time controller for AMBs equipped for wind turbine based on a floating-point Digital Signal Processor (DSP) and on a Field-Programmable Gate Array (FPGA), by operating in a cooperative way. The platform combines the flexibility and processing power from both devices and this digital controller solution will result in an improvement in the control performance and a remarkable reduction in software development time.