Wireless power transfer converter for Energy Hub applications with high power factor capability

A wireless power transfer (WPT) converter for `Energy Hub' system is proposed in home applications. For high power factor capability, the proposed system adopts an additional secondary power factor correction (PFC) circuit. It can operate both of resistive AC load and capacitive DC load, which is multi-functional in the energy hub system. The proposed WPT converter can obtain high power factor without bulky passive or active PFC filter in the primary side by using the secondary PFC circuit. In addition, the proposed WPT converter can reduce the number of power stages to improve cost-effectiveness. In this paper, the operational principles of the proposed WPT converter will be analyzed to obtain proper design methodology. Its performance will be verified by experimental results using a 500 W prototype converter.