电力电子系统建模关键技术综述及展望

The complexity of power electronics system has further increased with the rapid development of power electronic technology. This brings great challenges to the efficient and reliable operation of the system. Power electronics system is a typical multi-time scale non-linear hybrid system. In order to exploit the potential of power electronic systems as much as possible, the dynamic behavior of power electronic systems has been modeled by the domestic and abroad academic and industrial fields under multiple time scales. The electromagnetic properties and interaction mechanism under different time scales are revealed. This paper compared the modeling methods of power electronic systems at different time scales from the device level, converter level, and system level. The new key issues faced in the technological evolution and the corresponding latest research results were summarized, mainly including high reliability device driving and protection methods, good dynamic and static converter control methods and EMI suppression strategies, as well as electromagnetic transient simulation and stability analysis techniques of power electronic systems. Finally, the problems that still need to be solved in the existing research were pointed out, and the development direction of key modeling technologies in the future was prospected.