Student-tailored final year project on microcontroller-based hardware-in-the-loop speed control of a wind generator

Abstract

Student-supervisor cooperation was carried out to design the inter-subject final year project reported in this paper. According to the student feedback, this approach allowed gathering his main interests – vector control, microcontroller programming and wind power generation – together, therefore reinforcing his motivation towards his final year project and making him feel particularly responsible for its outcome. Microcontroller-based hardware-in-the-loop emulation made possible to combine the three afore-cited student interests. In this context, the virtual prototype of a current-controlled wind turbine-driven 2-MW permanent-magnet synchronous generator is presented, along with the pseudo-code corresponding to the permanent-magnet synchronous generator speed control algorithm programmed in an 8-bit microcontroller. In addition, tuning formulas are derived for the digital integral-proportional controllers commanding both the permanent-magnet synchronous generator current and speed. Detailed descriptions are provided in order to guarantee reproducibility. Implementation of the hardware-in-the-loop rig is also tackled, supported by illustrative results obtained when running it. The developed hardware-in-the-loop rig is considered suitable for laboratory practices of subjects like digital control and microcontroller programming.