Abstract:
Plugin hybrid electric vehicles (PHEVs) are a suitable choice, to achieve enhanced performance and reduced toxic gases. The considered PHEV model
consists of an integrated charging unit and a hybrid energy storage system
(HESS). The proposed HESS comprises of a battery with high energy density
and a supercapacitor with high power density coupled together to fulfill the
load demands of the vehicle. For on-board and balanced charging a DC-DC
buck converter with an uncontrolled rectifier has been used. Similarly, two
converters named as DC-DC buck-boost is incorporated to ensure a smooth
transition of energy. A rule-based algorithm termed as supervisory control
has been employed by incorporating total power inflow and state of charge
of the power sources to fulfill the load demands. Moreover, a robust integral
backstepping based nonlinear controller has been proposed for the smooth
execution and energy management of PHEV. They have been proposed to
achieve the design objectives in terms of output voltage regulation, reference
generation, and smooth tracking of current. Lyapunov stability theory has
been used to ensure the asymptotic stability of the PHEV. The performance
of the proposed controller for this system has been validated by comparing it
with the Lyapunov redesign and backstepping controllers already proposed in
the literature, and has been simulated on MATLAB/Simulink. The robustness of the proposed controller has been verified by introducing uncertainty
in the state model. Finally, the real-time applicability and effectiveness of
the proposed work has been ensured using controller hardware in the loop
(C-HIL) test bench.
