  The inductive charging of electric vehicles requires specific measurement and
calibration systems. In fact, the measurement of power on board involves DC
signals, which are superimposed to a significant AC ripple up to or over 150
kHz, depending on the type of charging system. A calibration method that makes
use of a phantom power, based on two independent but synchronized circuits, is
considered, simulating the charging voltage and current. This paper describes
in detail a solution in the realization of the voltage calibration chain, based
on the use of a DC voltage calibrator, an injector and a voltage divider.
