Series Motor Four Quadrants Drive DC Chopper Part3:Field Weakening mode

Abstract

Abstract This paper describes the operation of a field weakening mode of a new four quadrants DC chopper (FQDC) that can be used to extend the speed of an Electric Car (EC). A mathematical model and real experiment are used to verify the effectiveness of the field weakening mode of the proposed FQDC. First, Matlab/Simulink is used to simulate the system under study and the results indicate that the proposed approach is effective. This is followed by a real experiment using a prototype electric vehicle driven by a DC series motor. The results of the experiment show that the proposed FQDC successfully performed the operation as intended.