of the NI7852R, which brings several advantages such as monitoring the state variables of control algorithm in real time, generating frequency-adjustable signal for testing the dynamic performance of the OVS. For synchronously measuring the phase delay between the input and output of the sinusoidal response, weutilizetheNI7852Rboardcardtogeneratedigitalsinusoidal wave through the feedback chain to replace the system input Δϕs as equivalent voltage signal. So, this experiment setup can not only verify the long term steady state accuracy of voltage measurement, but also measure the transient state tracking process.