Guest Editorial: Special Issue on Power Electronics and Systems: Modeling, Analysis, Control, and Stability

Abstract

Recent advances in power electronics have enabled rapid development of applications in power systems, including renewable energy generation, high-voltage dc (HVdc) transmission, flexible ac transmission system, energy storage, and microgrids. Power electronics are also the foundation for new mobile power system technologies, such as variable-frequency ac distribution for more-electric aircraft and medium-voltage dc grids for electric ships. While there has been a steady growth in the use of power electronics on the load side over the last three decades, the penetration of power electronics into the generation, transmission, and distribution areas has far more impacts on system operation, control, and stability. New control interactions and resonance problems have been encountered in renewable energy and HVdc systems, which caught many utility companies, power electronics manufacturers, and operators of wind or PV parks by surprise. New modeling, analysis, and control technologies as well as system stability theories have to be developed. Impedance-based and other frequency-domain techniques are emerging for stability analysis and control of ac power electronics systems. Real-time and hardware-in-the-loop simulation is also becoming common tools for the design and integration of HVdc, renewable energy integration, and microgrid systems.