Real-time Implementation and Experimental Verification of Dual-Switch Coupled Inductor (DSCI) Converter based BLDC Drive for Electric Vehicle Applications

Abstract Large heat output and burning have recently emerged as critical challenges in electric vehicles (EV). The main causes of this issue are the use of spark-propelled motors and in-built complicated circuits. This research attempts to address the aforementioned issues by providing a reduced switch converter for Brush-Less DC (BLDC) motors. A Dual-Switch Coupled Inductor (DSCI) converter is proposed based on the BLDC drive for electric vehicle (EV) applications. Because the DSCI converter has only two switches, the need for a gate-driven circuit is greatly minimized, which is responsible for high heat dissipation and complicates the circuit. Theoretical analysis is performed on the operating principles, switching frequencies, component design concerns, maximum voltage gain, and efficiency, as well as simulations using Matlab® Simulink. The efficiency of the DSCI converter obtained is 98.23%. The converter is used to drive a 0.75-kW BLDC motor, and the simulation results are validated with a hardware prototype model at 3000 rpm. At the end of the paper, the explored results for both hardware and simulation and comparative studies with earlier work are described in detail.