A Novel AC/DC Bridgeless and Contactless Electrical Energy Transmission System for Multi-Load Applications

In this paper, we propose a novel ac/dc bridgeless and contactless energy transmission system. The coreless planar transformer and magnetic dipole moment are applied to transmit electrical energy in a noncontact method. In addition, the input ac current of the proposed converter has effective power factor correction. Simultaneously, the primary-side switches have zero-voltage switching, and the secondary-side diodes have zero-current switching. Thus, the power quality and efficiency of the proposed system can be upgraded. Furthermore, the proposed system can increase the transmission distance with the voltage multiplier receiver connected at the rear of the secondary-side coreless planar transformer. Power transmission and circuit operation are described in this paper. Finally, a prototype system is constructed, and its validity has been confirmed with experimental and practical measurements.