Design And Implementation Of Embedded Real-time Controlled Software For Small-scale Distributed Wind-solar Energy Hybrid Generation Systems

As the most widespread sustainable energy, solar and wind energy are recognized as the most potential energy to replace the fossil energy in the future. Accompany with the fast developing of the global economy, diversified demand situation has occurred. How to develop sustainable energy effectively and reasonably has become the focus that all countries to chase. In our country, the current situation of wind-solar energy hybrid generation is relatively slow compared to other countries, and most of the distributions are in the remote areas, such as Inner Mongolia, Qinghai Tibet Plateau and other regions, where it does anticipate many difficulties in maintaining power supplies, and most generation dispatching are independent. On the one hand, the research of distributed wind-solar energy hybrid generation system has very high practical value; on the other hand, it has a very broad application prospect.The characteristics of wind-solar energy hybrid generation system are taken into consideration, and combined with the complexity of the system and cost and other factors, a set of wind-solar energy hybrid generation system is build based on the embedded ARM and real-time operating system μC/OS‐III. First, the system hardware topologies are introduced and explained, and a new type of multi-input bidirectional DC / DC converter is used. Then, combined with the function of each part of the module, the hardware and software environment of embedded-based wind-solar energy hybrid generation system is built. And the different tasks of the system are divided reasonably and carefully, in order to achieve a stable and reasonable operation system. Furthermore, according to characteristics of the system, maximum power point tracking algorithm is designed for small wind-solar energy hybrid generation system, and experimental verification shows that, for the system which has two input sources, photovoltaic and wind, the maximum power tracking algorithm has more advantages and more effective allocation of system resources than the ordinary algorithm.Finally, energy management system were introduced and discussed with the hardware platform, and the experimental simulation results shows that the system is stable and suitable for long time operation in unattended environment; System capacity has increased compared to conventional power generation systems, and the energy scheduling is reasonable, and it is suitable for a large covering.