Design of Hybrid-Fuzzy Controlled SEPIC Converter Fed BLDC Motor Driven for Enhanced PQ Features

Electrical & Electronics Engineering

Permanent Magnet BLDC motor drive connected with the diode bridge rectifier and high value of the capacitor due to which poor power factor and higher THD (Total harmonic distortion) value at the input side. This scheme also used for speed control of BLDC motor by controlling the VSI (voltage source inverter) feeding the BLDC drive. The Active-PFC device acts as front-end of VSI fed BLDC motor for better speed control features by changing the PWM duty cycle through closed loop controller. The DC link voltage regulation in conventional PI control scheme is not suitable for getting enhanced PQ features. But, this controller is unpopular due to tuning issues of current controller; the above-mentioned issues are regulated by using novel intelligent based Fuzzy-Logic controller achieving good performance features. The proposed intelligent Hybrid-Fuzzy control scheme is highly used in several applications, has been greatly recognized due to enhanced performance over the classical PI and Fuzzy-Logic controllers. This work compares the improvement of power-factor, harmonic profile, THD with classical PI and intelligent Fuzzy-Logic controlled SEPIC Fed BLDC motor drive has been proposed by using Matlab/Simulink platform, and results are presented.

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