DC-DC converter with closed loop control through several optimizing methods

DC-DC converters have wide several applications in electrical industry, they can be employed for varied DC voltage usages and stabilization or the control of DC voltage of a battery or it can be a component of a complex converter to control the intermediate or output voltages. Due to their switching property included in their structure, DC-DC converters have a non-linear behavior and their controlling design is accompanied with complexities. But by employing the average method it is possible to approximate the system by linear system and exploiting linear control methods. In this article control Buck converters by method of linear quadratic regulator (LQR). This method is employed for controlling Buck converter and improving its dynamic functioning, but determining the LQR controlling matrices is very difficult. So, genetic algorithm and Tabu Search, (TS), are employed to eliminate this obstacle. The simulation results show an improvement in voltage control response.