A Sliding-Mode Governed Three-Port Partial-Power Charger for Enhanced Stability and Swift Energy Transfer in Electric Vehicles

The study extends the capability of a three-port partial-power processing charger by applying a sophisticated Sliding Mode Control algorithm in control of both the AC to DC and DC to DC conversion processes. The prior arrangements involved the use of conventional proportional-integral controllers and thus had slow transients, highly visible overshoots and lower sensitivity to changing conditions of supply or load but the enhanced system here exhibits improved stability and responsiveness. The adoption of the sliding-mode control method allows the unit to reach the required states very quickly; therefore, the voltage ripple is minimized, the oscillations are suppressed and even the unit can be regulated in operation when the supply voltage is altered between 220 V and 270 V or the battery load is altered between full and partial load. Besides this, the DC stage is only a small percentage of the total charging power, and consequently, reduces the semiconductor stress, switching losses and thermal load by the partial-power topology. The simulation outcomes of the extension are fairly extensive in the expression of great start-up behaviour, easy stop, greater efficiency and constant voltage amid alterations in load. Hence, it is with little doubt that the proposed scheme will be a more robust, quicker and less costly solution to the electric vehicle fast-charging applications of the contemporary nature.