In this paper, a (PF) Power factor correction and power quality (PQ) improvement is the main concern for BLDC motor drive fed from a SEPIC Converter using a FLC controller is proposed [2], [4], [10]. BLDC motor drives employ a DBR followed by a high-value DC-link capacitor, resulting in poor power factor, increased current harmonics, and degraded power quality at the utility interface [1], [2], [9]. To overcome these limitations, a SEPIC converter is integrated between the rectifier and the voltage source inverter (VSI) to regulate the DC-link voltage and shape the input current [1], [4], [5], [10]. The proposed system utilizes both PI and FLC controllers for converter control and speed regulation. The performance of the controllers is assessed in terms of power factor, THD, dynamic response, and speed regulation capability [5], [8], [9]. Simulation results demonstrate that the FLC provides superior performance compared to the traditional PI controller by achieving near-unity power factor, significantly reducing input current THD, minimizing steady-state error, and improving transient response under varying operating conditions [6], [7].

Keywords -  Diode Bridge Rectifier (DBR), Direct Current (DC) , Brushless DC (BLDC), Proportional Integral (PI), Fuzzy Logic Controller (FLC), Total Harmonic Distortion (THD), Power Factor (PF),  Power Quality (PQ).