This paper develops a precise method control system for tracking control of a power drive system based on a multiphase ma-chine under motor parameter and load torque variations. By adding a simple feedforward term based on a Flatness theory, a conventional Flux Oriented Control (FOC) can be enforced to have a perfect tracking performance under model parameter and load torque variations. Hence, a Hybrid Flatness-Based Control (HFBC) technique is applied to the control of a Dual Star Induc-tion Machine (DSIM) and compared to a classical vector control strategy regarding tracking behavior, robustness, and perturba-tions rejection. Finally, the simulation and experimental results are given to verify the effectiveness of the proposed HFBC under the uncertainties such as motor parameter and load torque variations, simulation and experimental results are presented, show-ing the superiority of the HFBC.