Grid-Forming Inverters: Principles and Practices. Inverter-based generation and transmission systems are vastly used in modern power grids, driven by the sharp cost reduction of renewable energy resources and the advances of power electronics technology. To secure a stable inverter-based power system, the grid-forming control is increasingly used with grid-connected inverters, who operate as voltage sources to regulate the grid voltage and frequency. There is thus an important need to address this timely and important topic among both power electronics and power system engineers and researchers. This course intends to provide a systematic discussion on the principles and design practices of grid-forming inverters. The main topics include, but not limited to
 Grid-synchronization of inverters
 From synchronous generators to grid-forming inverters
 Overview of virtual synchronous generators
 Synchronous power control – damping, inertia and virtual impedance
 Small-signal modeling and stability analysis
 Design-oriented transient stability analysis
 Active damping of power oscillationsAdvanced Energy Systems Analysis.
advanced energy system analysis using the EnergyPLAN computer model.
Stability and Control of Grid-Connected Voltage-Source Converters.
Voltage Source Converters (VSCs) have commonly been used with renewable power sources, flexible ac and dc power transmission or distribution systems, regenerative drives, and transportation electrification. As the increasing use of VSCs in electrical grids, the dynamic characterizations of VSCs are playing a critical role in building a stable and resilient power-electronic-based power system. This course thus devotes to cover the fundamentals and state-of-the-art of modeling, stability analysis, and control topics for the VSCs in the grid-connected applications.
Vector current control
Grid synchronization and direct voltage control
Impedance-based modeling and validation
Stability of current control with LCL-filters
Stability impacts of grid synchronization and direct voltage control
Active stabilizing techniques for VSC-fed systems
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I'm a Food, Places & Innovation Ph.D Course. There is an increasing interest in place-based approaches to value creating in local and regional food economies. Developing the identity of cities and regions turning them into arenas for gastronomic innovation and at the same time involving citizens and enterprises in new ways has become a popular strategy in cities and regions around the world. Creating innovative urban food eco systems however, is a challenge that requires governance, well planned strategies and participation of a broad range of actors. In particular the active participation of citizens and food makers are crucial if the urban food movement of is to create value for the society as such. The course explores the new place based foodways by bringing scholars and practitioners together around the materiality of food it self. It provides unique opportunities for collaborative academic inquiry. The course setting is the Melstedgaard Food lab at isle of Bornholm that over the spring 2019 runs the Meal Pilot educational program for food entrepreneurs, consultants, food professionals, civil servants and others in charge of or involved in development of food strategies at local, regional or national level. The course will mark the closing event of the Meal Pilot progression and will provide unique opportunities for PhD students to conduct collaborative data collection and field studies in direct connection with the hands on food activities at the food lab. The course will in addition involve off lab excursions to innovative food hot spots in the surrounding foodscapes on the island and lecturers from practioners..
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