In the secure and financial process of power plant, the capacity and control of chief steam temperature can play a significant role since the major thermal power unit's parameter. However, superheated steam temperature (SST)'s control has become more and more demanding issue as unidentified instability happened through recurrent and widespread modifications and severe control necessities for the effectiveness and protection. As the irregular renewable diffusion has been developing, this can be still cruel. Therefore, the structure of principle and parameter setting technique of the novel foundation controller (NFC) is presented in this paper for steam temperature control system improvement in thermal power station using inertial combination filter (ICF) and micro controller-based closed loop control system, in which the temperature decreasing water flow control will be done. Finally, the proposed system is simulated with the help of MATLAB. © 2022 Elsevier B.V., All rights reserved.