A Converter-Based Battery Energy Storage System Emulator for the Controller Testing of a Microgrid with Dynamic Boundaries and Multiple Source Locations

Microgrids (MGs) with dynamic boundaries and multiple source locations have been proposed as a future MG concept, which requires sophisticated control and coordination. Testing of MG controllers in a realistic environment becomes essential for the efficient and reliable deployment of such MGs. A converter-based testing platform has been proposed for MG controller evaluation, which requires well-modeled emulators. However, as a core component, existing battery energy storage system (BESS) emulators in the literature cannot meet the testing needs of the M G with dynamic boundaries and multiple source locations. In this paper, a BESS emulator for controller testing of M G with dynamic boundaries and multiple source locations is developed, considering controller functions, different operation modes, and transition coordination. Experimental results are conducted to verify the developed emulator on a converter-based testbed.