Solar and On-Grid Based Electric Vehicle Charging Station

This chapter proposes an on-grid solar-based smart DC electric vehicle charging station (EVCS) to minimize overload on the utility grid and enhance efficiency. The EVCS uses solar power to charge EVs, avoiding grid consumption during peak hours and reducing the load on the utility by relying on renewable energy. This work proposes a system with a common DC bus connected to a solar PV array via a DC-DC boost converter, utilizing a fuzzy logic-based MPPT technique to maximize solar panel output power. A single-phase grid is also connected to the common DC bus through a single-phase full-bridge inverter with bidirectional power flow, and this inverter is controlled by the current control method using the d-q framework. The DC bus is connected to the grid via a bidirectional single-phase full-bridge inverter. This inverter, controlled by the current control method using the d-q framework, manages power flow effectively in both directions. An LCL filter is employed to minimize harmonics in the system. Additionally, an EV battery is integrated via a bidirectional DC-DC converter to stabilize the bus voltage, with control provided by a voltage controller. This multimode EV charging station, powered by renewable energy, can significantly promote the adoption of electric vehicles and lower the cost per unit of charging, supporting a more sustainable and cost-effective approach to EV infrastructure.