Grid Access of Multiple Energy Storage Technology

Modular Multilevel Converters are adapted for the grid access of volatile energy in-feeds and energy storages of various technologies. This approach enables a system operation method which follows the load characteristic. Such an advanced grid structure with energy storage units in the range of kW has been installed in our power electronic lab and its extensive functionality could be confirmed by real hardware tests. Moreover a flexible charging management of the energy storage units could be realized and verified.