Multi-functional charger for electric vehicle operating with grid and SPV generation

This manuscript proposes a charger for electric vehicle which operates with both the grid and the solar photovoltaic (SPV) array. The charger is designed to operate in four different modes depending on the exchange of power between the grid, SPV array and the vehicle battery. The vehicle battery is charged by both grid and SPV array. The charger feeds the battery and SPV power to the grid at unity power factor. Similarly, local home loads are powered using the battery and SPV array. The sharing of power between grid and SPV array is decided by the controller and it is designed to use SPV power first and then the remaining power is taken from the other source. While feeding power to the grid, a unit template is used for synchronization. It is designed to operate with a single phase, 230V, 50 Hz AC mains installation. The performance under steady state and dynamic conditions validates the design and control of proposed charger.