Guest Editorial: Special Section on Transient Behaviors of Multi-Timescale Megawatt Power Electronics Systems

With the rapid development of a new generation of power systems and high power traction, megawatt power electronics receives increasingly more global attention for enhanced capability and reliability. Megawatt power electronics apparatuses and systems are composed of control units, high-power semiconductor devices, passive elements, and generalized connecting parts, in which effective transformation and transmission of electric power are achieved via the control of information flow over energy flow. When considering multiple time-scales, the megawatt power electronics systems turn into a combination of linearity and nonlinearity, and also the one of discrete and continuous quantities, which results in complicated transient phenomena. In addition, scalability and modularity become growing trends for the megawatt power converters, which are preferred by the manufacturers.