Abstract |
An open industrial DC grid for energy supply has many benefits. Also new challenges arise by couplingthe DC link capacitors of all devices, e.g. inverters. This paper presents the effects of component failurescausing short circuit faults in combination with electrically coupled and charged DC link capacitors.Resulting energy flows are shown, which arise in the DC grid in case of faults. In addition, measurementsof short circuit tests and two solutions are shown, which enable the safe and simple operation of an openindustrial DC grid. |