In 2017, the BorgWarner eBooster®, an electrically driven compressor, did make its world premiere in series production on a 3 liter – six-cylinder inline gasoline engine [14]. Vehicle customers and legislators worldwide demand better fuel economy in new engines. Electrically powered turbocharging systems, enabled by increasing electrification of vehicles, allow higher specific torque and engine power, thus enabling downsizing and down-speeding without compromising transient behavior.