Performance analysis of fuzzy logic controller based DC-DC converter fed DC series motor

A fuzzy controller for closed loop control of DC drive fed by DC-DC converter (Chopper) is designed and presented in this paper. This system has been designed to have two loops with an inner ON/OFF current controller and an outer fuzzy speed controller. The later is used to change the duty cycle of the converter and thereby, the voltage fed to the DC series motor regulates its speed. The performance in respect of load variation and speed change has been reported. The performance o f the proposed controller is compared with the reported results and found that the fuzzy based DC-DC drive can have better control.