Abstarct: Power electronic converters can be used to convert the AC line voltage to a DC voltage, with low input total harmonic distortion (THD) and desired DC voltages for different loads. This thesis deals with single-phase single-stage Boost baxsed power factor correction (PFC) rectifier. Single-stage converters can be considered as low cost solutions for power factor correction. This is because only one active switching stage is used in these converters. As the main objective of this thesis is optimizing performance of PFC rectifier. It presents a method for designing a simple optimized PI controller for this rectifier, to gain a good transient response as well as input current quality via a multi-objective optimization approach that is Strength Pareto algorithm, which is baxsed on Pareto optimality concept used in Game theory literature. Input current harmonics, dynamic and start-up response of output voltage are taken as objective functions while the PI controller’s gains (Kpi,Tpi) in Indirect current control method of PFC rectifier are design variables. The program generates a set of optimal gains called Pareto Set corresponding to a Pareto front, which is a set of optimal results for the objective functions. All of the Pareto set and Pareto Front for under study PFC rectifier are presented in the thesis and according to them one can easily pick out any of the results baxsed on its features and its own engineering view. In the Pareto Fronts which offered for the PFC rectifier, dynamic response to all of possible changes like change in the load, input voltage, and reference voltage have been considered. Simulation results are presented to prove the superiority of the proposed design methodology over other methods. A 300 W Boost baxsed PFC Rectifier prototype was fabricated to demonstrate the efficiency of this new method. Design of this convertor was done baxsed on Indirect current control method and in continuous conduction mode (CCM). The discrete control scheme was implemented on an eZdsp F2812. Experimental results are presented and compared with simulation results, this comparison clearly showed that they are quite close to each other.