Self Tuning Fuzzy Logic Controlling Chopper Operation of Four Quadrants Drive DC Chopper for Low Cost Electric Vehicle

Abstract

DC drive system for traction are always powered by separately excited and series dc motor controlled by four quadrants dc chopper. However, the operation modes of the conventional H-Bridge four quadrants drive dc chopper for series motor are limited to driving and regenerative braking (only with the presence of residual magnetism), with no capability of reverse operation. Hence, a new Four Quadrants dc drive chopper for series motor in EV's application, optimized by Artificial Intelligence is developed. This paper further describes the application of Self Tuning Fuzzy Logic for controlling chopper operation of the proposed Four Quadrants dc drive chopper. The appropriate mode of operation will guarantee optimum consumption of the battery power, thus provide longer distance traversed.