Doubly-Fed Induction Generators (DFIGs) are widely utilized in wind turbines due to their ability to operate efficiently at variable speeds. Unlike standard induction machines, DFIGs feature accessible rotor windings, allowing direct control of rotor currents to decouple generator speed from the grid frequency. This technical note details the operating principles and control strategies for a grid-tied DFIG in a wind turbine application. It examines a dual-converter topology involving a Grid-Side Converter (GSC) to regulate the DC bus, and a Rotor-Side Converter (RSC) to independently manage active and reactive power using a slip-oriented reference frame. To optimize wind energy capture, an MPPT algorithm is applied to adjust the speed reference. To overcome the challenges of testing megawatt-scale machines, these control algorithms are validated via Hardware-in-the-Loop (HIL) simulation using the Imperix B-Box RCP and an RT-Box. The system emulates mechanical turbine characteristics using torque look-up tables and lumped inertia models.