The increasing penetration of electric vehicle (EV) charging infrastructure and power-electronics-based distributed generation has exacerbated power quality (PQ) issues in modern distribution networks, including voltage disturbances, harmonic distortion, and reactive power imbalance. This paper proposes a reduced-switch nine-switch Unified Power Quality Conditioner (UPQC) as an effective alternative to the conventional 12-switch UPQC and standalone Distribution Static Compensator (DSTATCOM) for three-phase three-wire (3 P-3 W) systems. The proposed topology achieves simultaneous voltage and current compensation without increasing the switch volt-ampere (VA) rating, thereby reducing semiconductor count, converter complexity, and system cost. An isolated bidirectional DC-DC converter is integrated to facilitate EV charging applications, enabling grid-to-vehicle (G2V) operation, DC-link voltage regulation, and dynamic PQ compensation under variable grid conditions. Simulation studies carried out in MATLAB/Simulink demonstrate that the proposed configuration significantly improves PQ indices, ensures stable DC-link voltage regulation, and provides reliable energy management, validating its suitability for sustainable EV charging stations.