Improving starting current and torque ripple in a BLDC motor for an electric vehicle Available to Purchase

Electric vehicles offer an excellent solution to the problem of pollution from the use of fossil fuels in transportation. A brushless DC motor (BLDC) can be used as a drive system, offering various advantages such as high efficiency, low maintenance costs, small core size, and DC power source. Using photovoltaic panels (PVs) with the battery may also be assumed to increase the reliability of BLDC motor sourcing, especially during sunny periods. In this paper, a comparison between Slide Mode Control and Proportional Integral Control for a driving system (BLDC motor in an electric vehicle) was developed using simulations based on practical tests. A practical prototype was implemented to extract the parameters for accurate simulation and modeling of a drive system-based EV, while a full load test was applied to extract the accurate parameters of the BLDC motor. The simulation results thus showed the effect of the proposed controller (SMC) on ripple torque and starting current. The energy consumption was calculated to represent the period of battery discharge in both conventional and hybrid DC power sources. The torque ripple and startup current needs of the SMC controller were thus found to be better than those of the PI controller. In particular, the SMC controller showed a torque ripple 80% less than that of the PI controller, a difference of 0.35. A lower initial DC current, 7.1A, less than 5% of the battery current, was also required by the SMC controller. Based on the results, the SMC controller offers a more practical and effective option for controlling the speed of BLDC motors in electric vehicles. The outcomes further demonstrated that employing the SMC controller results in noticeably greater energy conservation than in the case with the PI controller, with savings of almost 95%.