Constant-Current and Constant-Voltage Output Using Hybrid Compensated Single-Stage Resonant Converter for Wireless-Power-Transfer

In this project, single-stage wireless power transfer (WPT) resonant converter with Boost bridgeless power-factor correction (PFC) rectifier has not been promoted due to the rising voltage of dc-link and unstable output voltage of the converter. The compensation network with load-independent constant current output (CCO) and constant voltage output (CVO) characteristics cannot be analyzed in this converter due to the above problems. In order to solve these problems, a new asymmetric modulation method and the corresponding compensation network design method for single-stage WPT converter are proposed in this paper. The proposed modulation method makes the voltage of dc-link and the output voltage of single-stage WPT converter constant. Based on the new modulation method, the design method of the compensation network and the implementation of zero voltage switching (ZVS) in single-stage WPT converter are proposed and analyzed in this paper. Compared with the other WPT converters, the proposed scheme has advantages in efficiency and cost. The simulation results can be evaluated by using Matlab/Simulink Software.

Keywords: load-independent output, single-stage, compensation network, bridgeless, power factor correction (PFC).