Rohde and Schwarz NGU-K106 - Battery Simulation Option for NGU201

The Rohde and Schwarz NGU-K106 is the battery simulation option for the NGU201 source measure unit.

Real batteries show different characteristics depending on the type of battery and its charging condition. Capacity, open-circuit voltage (Voc), and equivalent series resistance (ESR) are important battery characteristics that depend on its state of charge (SoC). The NGU-K106 option allows users to simulate the behavior of batteries under different charging conditions, e.g. when powering a DUT.

To define a battery model, the data of the battery can be entered easily using the integrated battery model editor. Data sets for the common battery types (Pb, lithium-ion, NiCd, and NiMH) are available as preconfigured files. These can be easily modified according to the needs of a specific application. Additional battery model data sets can be loaded from a USB device and stored on the R&S NGU201 source measure unit.

In particular, when battery-operated devices have to be optimized for lifecycle, the discharging behavior of the battery type needs to be considered. The battery simulator function of the R&S NGU201 makes it possible to simulate the real battery output performance. Testing can be based on a selected battery model, and battery capacity, SoC, and Voc can be set to any state to test the device under specific circumstances.

The charging behavior of a battery can also be simulated. This is particularly important when designing battery chargers. In this application, the R&S NGU201 source measure unit is used in sink mode. Both cases provide dynamic simulation, meaning Voc, ESR, and SoC change according to charging/discharging conditions like a real battery. The state of charge is shown graphically; all other values are displayed numerically.