Design of a High-Performance Battery Converter System for Providing Synthetic Inertia at Distribution Network Level

The frequency stability in the electrical supply system is challenged by increasing inertia-free power electronics-based generation capacities. To mitigate this effect, high performance battery converter systems controlled as virtual synchronous generators can provide synthetic inertia. This paper presents a system design and a detailed evaluation of this application. An analysis of grid frequency measurements is carried out to derive design criteria for the battery converter system's control. Furthermore, experimental results are shown which demonstrate the operation of a virtual synchronous generator system.