Enhanced Power Quality Control in Microgrid-Assisted Electric Vehicle Charging Systems Using ATOGI and CIDPC

Abstract

This study incorporates an Advanced Third Order Generalised Integrator (ATOGI) based control technique for microgrid-assisted electric vehicle charging systems. Here, a grid-connected solar photovoltaic energy conversion system uses a current-inflected direct power control (CIDPC) for a three-phase voltage source inverter (VSI) to dynamically adjust the active and reactive powers provided into a weak grid. The main goal of the control is to retrieve the fundamental component from the deformed grid circumstances and feed it back into the grid at unity power factor (UPF) under normal circumstances. In addition to transferring perpetual power to the grid side, the control fulfils the demands dynamics of the non-linear load and the electric vehicle charging infrastructure. The control mechanism may also contribute to maintaining of the voltage characteristic by adjusting the phase voltage via the infusion of reactive power and implementing a ride-through technique. Throughout all of these procedures, there is no compromise made in terms of the power quality of the system. In the face of challenging grid circumstances, the technique's effectiveness is shown via experimentation using hardware in loop platform. In each of these cases, the harmonics are within acceptable ranges as per IEEE standard-519.