Linear single phase inverter model for Battery Energy Storage System evaluation and controller design

A method for deriving a set of linear transfer functions for a single phase grid tied system is presented, which can be used to determine how small signal perturbations and transients on the utility side are translated through the inverter to the dc link, as well as assist in controller design. These transfer functions can be used by a Battery Energy Storage System (BESS) designer to predict what harmonics the battery will see in the field, without the need for expensive simulation software. With this information, battery designers will be able to design a more robust battery specifically tailored for single phase inverter applications.