Real-Time (RT) simulation introduces fast computational capabilities with high-fidelity mathematical models to study large or complex operational systems in the aerospace, automotive, energy, or other domains. The advantage of conducting power simulations in RT is that the dynamic power behavior of physical devices can be represented in large power simulations that would normally not be able to be studied. When physical devices are interconnected to the power system simulation through power amplifiers and data acquisition systems, it is called Power Hardware-in-the-Loop (PHIL). A situation where PHIL has proven to be very useful is in voltage regulation studies in distribution circuits utilizing a various distributed energy sources, such as photovoltaic (PV) inverters. This case is difficult to analyze solely using power hardware experiments or power simulations because of the complex interaction of PV inverter technologies with advanced grid-support functions and the power system. Distribution circuits with high penetrations of renewable energy resources may experience wide voltage deviations because of changing active power flows from distributed energy sources. This project proposes to conduct a performance comparison between three different voltage regulation control strategies implemented on a RT PHIL platform. Residential PV inverters were used as the hardware component of the PHIL setup. The selected control strategies are tested on five reduced distribution models based on existing feeder circuits. Each one of these feeder circuits varies in size and PV penetration