<p>The integrated system composed of wave energy converters and floating wind turbines offers substantial potential for reducing the levelized cost of energy (LCOE) by sharing the infrastructure, mooring system, substations and cables. This paper proposes an integrated system consisting of a semi-submersible wind turbine platform and three WaveStar flap-type wave energy converters. The coupled motion model of the integrated system is established and validated on the basis of viscously corrected potential flow theory. This study investigates the influence of two key parameters, the arm length and hinge points of flap-type wave energy converters, on system performance. The results reveal that variations in the arm length of flap-type wave energy converters (WECs) are the primary determinants of the integrated system’s dynamic characteristics, whereas changes in hinge points predominantly affect device power generation. Additionally, incorporating WECs reduces the pitch and heave motions of the platform within a specific wave frequency range, thereby enhancing the energy output of the integrated system at the operational sea site. The performance of this hybrid system at a selected sea site is further assessed via the proposed aero-hydroservo coupling simulations.</p>