SECURITY CONCEPT FOR INTEGRATING A BATTERY INTO AN INVERTER

摘要

An inverter apparatus (1) includes an input stage (3) receiving DC electric power from a DC power generator (2) for loading a DC voltage link (6), a DC/AC converter (8) connected to the DC voltage link (6) and feeding AC electric power into a power grid, a bidirectional connection (11) for loading a battery (13) out of the DC voltage link (6) and for loading the DC voltage link (6) out of the battery (13), and a controller (17) operating the DC/AC converter (8) and the bidirectional connection (11). The controller (17) receives present values of relevant parameters of the battery (13) including working data (19) at least related to a state of charge and safety data (20) indicating a safety state of the battery (13) from a battery monitoring unit (18). The controller (17), in operating the bidirectional connection (11), considers the working data (19) and is commanded by the safety data (20).