The ongoing transition of low voltage (LV) power grids towards active systems requires novel evaluation and testing concepts, in particular for realistic testing of devices. Power Hardware-in-the-Loop (PHIL) evaluations are a promising approach for this purpose. This paper presents preliminary investigations addressing the systematic design of PHIL applications and their applicable stability mechanisms and gives a detailed review of the related work. A requirement analysis for emulation of grid situations demanding system services is given and the realization of a PHIL setup is demonstrated in a residential scenario, comprising a hybrid electrical energy storage system (HESS).

The KIT Energy Smart Home Lab is a smart residential building comprising building automation, metering systems, sensors, intelligent appliances, heating, ventilation, and airconditioning equipment, distributed generation, and energy storage systems. Currently, the lab is extended by a hybrid energy storage system and a linear voltage amplifier for real-time simulations, to facilitate fully functional power hardware-in-the-loop simulations and evaluations. This paper presents the setup of the lab, the hardwarein-the loop research environment, and first measurements when using a simulated artificial mains network.

Abstract-In this paper a predictive control scheme for current injection into three phase grids with power converters is presented. The proposed control scheme shows an excellent current quality even under adverse grid conditions like unsymmetrical grid faults.By usage of iron powder inductors as filter elements for the grid current a very high overload capability of the inverter can be achieved without oversizing these filter elements. The performance of the proposed control is experimentally verified with a two-level three-phase active front end.

Abstract-In this contribution, a control scheme for n-leg interleaved DC/DC converters is presented, allowing dead beat current control. Accurate average current control is ensured even for nonlinear filter components such as iron powder inductors or ferrite core inductors used near their saturation limit.Furthermore, the control scheme features a common measurement instant for all measured values. The effectiveness of the proposed control scheme is shown with a three leg bidirectional DC/DC converter.