A Power Selective Control of Versatile Wireless Vehicle-Grid-Home Power Interface (VW-VGH-PI)

Abstract

In vehicle-grid-home (VGH) systems, bidirectional wireless power transfer (BD-WPT) systems are gaining popularity, which offers considerable advantages in terms of safety and convenience. However, both nonlinear household appliances and EV charging system can easily cause the power quality problems such as low power factor, harmonic pollution, etc. A new versatile wireless vehicle-grid-home power interface (VW-VGH-PI) topology is proposed, comprising a power quality control converter (PQCC) between the grid and the wireless power transfer (WPT) system. New operating modes for a VW-VGH-PI are also proposed for active power interchange and reactive and harmonic power compensation. Based on the pre-designed capacity of PQCC, a selective power control method is proposed to limit the amount of active, reactive, and harmonic power passing through the PQCC for the heavy loads. In this paper, the structure, operation modes and selective power control are proposed for VW-VGH-PI. Simulation results are validating that the VW-VGH-PI can be used to selectively regulate the power flow among the vehiclegrid-home system.