CASCADED H? INTEGRAL-BACKSTEPPING ROBUST PI CONTROL FOR HYBRID ENERGY STORAGE SYSTEM OF BATTERY-SUPERCAPACITOR IN ELECTRIC VEHICLE

• Main Author: Ramos Pararat Diogoamas, Joseph
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/43869
• Institution: Institut Teknologi Bandung

A fast charging/discharging feature is central in the discussion of battery energy management in electric vehicles. One energy system solution that can accommodate this feature is a battery-supercapacitor Hybrid Energy Storage System (SPE). To fulfill this configuration, the battery and supercapacitor on the SPE are connected to a DC-to-DC power converter topology to manage the power supply from each source. In this research, a Cascaded H? Integral-Backstepping Robust PI control algorithm is proposed that will consider various uncertainties that occur in the system, both in terms of SPE circuit modeling, (i.e. batteries, supercapacitors, and DC-to-DC converters) and in terms of presence of disturbances (through load power and voltage source fluctuations). This algorithm was tested in the simulation and compared its performance with Single-Loop H? Integral-Backstepping Robust PI. The proposed cascaded H? Integral-Backstepping Robust PI controller is capable of eliminating the non-minimum phase properties of the system. The algorithm used in the case of full battery state-of-charge input conditions and supercapacitor at nominal voltage, with fluctuating load current conditions give RMSE results and the maximum difference between Bus DC output voltage and its references are 3.304 and 12.98 V, respectively.