A NEW APPROACH TO SYNCHRONIZE A BIDIRECTIONAL DC-TO-DC-CONVERTER FOR CONTACTLESS POWER-SUPPLIES

After a short introduction into the field of contactless energy transm ission this paper describes a new method to synchronize a bidirectiona l DC-to-DC converter. For example a contactless inductive transmission of energy for robots is introduced. The employed bidirectional DC-to- DC converters are used to feed a rotatable transformer. To allow regen erative braking of the robot drives a bidirectional power flow is nece ssary. Therefore the DC-to-DC converter, consisting of two full bridge inverters, has to be clocked synchronously. With the new method only one transformer is needed for bidirectional power flow without any aux iliary components for signal transmission.