Utilization of plug-in electric vehicles (PEVs) in residential feeders is gaining popularity in recent years due to the societal awareness about greenhouse gas emission and the increasing of petrol price. The potential for network stress and congestion due to uncoordinated charging of PEVs is significant as they represent sizeable unbalanced loads with unpredictable locations, plug-in times, charging rates and durations. This paper aims to mitigate the detrimental impacts of electric vehicle charging on smart grid by implementing a decentralized coordinated PEV charging algorithm that will also improve the power quality of smart grid. The idea for the individual PEV chargers is to acquire distribution transformer loading through the smart meters to dynamically coordinate their charging times, rates and durations in order to improve the overall system voltage profile, reduce transformer stress and control current imbalance. Simulation results will be generated and analysed for an unbalanced three-phase 62 node residential network populated with PEV chargers using the Simulink-Matlab software.