Experimental study of the energy portions control in Series Resonant Converters

Although the Series Resonant Converter (SRC) is not yet fully explored and widely applied it is becoming more and more important for the contactless charging of the Electric Vehicles (EV) batteries. From the point of view of the modern propulsion batteries the careful and reliable charging is very important and good solutions will be the SRC contactless battery charging and the online resonant energy transfer. To their high efficiency must be added the high stability of an instantaneous method of control. The proposed solution is based on correcting the portion of energy that is sent to the load in each half period through the resonant circuit. Experimental results are shown from the implementation of this idea in the SRC working on a loosely coupled (contactless) magnetic connection.