Abstract:
The goal of this work is to design a Super Twisting Sliding Mode Controller (ST-SMC), a
robust nonlinear controller technique for electric vehicle (EV) charging systems. In this work,
a hybrid supercapacitor (HSC) has been employed as a storage mechanism. Since recent years,
hybrid supercapacitors have gained popularity due to their enhanced energy density
performance without affecting their power density. The lithium-ion capacitor (LIC) is the
advanced hybrid energy storage system that offers benefits such as high energy and power
densities, long cycle lives, and a wide range of temperature for operation. Utilising specified
fast-charging points and averting full and longer charges, LIC can be employed with
Opportunity (OP) charging for an EV during the operation phase. The Grid to vehicle (G2V)
and vehicle to grid (V2G) strategies can both use electric vehicle (EV) chargers to effectively
connect the grid and the vehicle in a two-way manner. The control of power flow is a difficult
task in either of the setups, though. The bi-directional power converter in a BEV charger is
controlled by a controller ST-SMC, which tracks the charger's intended current and output
voltage in both G2V and V2G operations. A significant weakness in power converters is the
chattering effect, which is mitigated by the suggested controller. For the comparison, the robust
integral backstepping sliding mode controller (IBS-SMC) is also developed. The Lyapunov
stability method is used to examine the system's stability. In the MATLAB/Simulink software,
the suggested controllers are simulated. Results confirm the controller's effectiveness under
different operating circumstances.
