A novel hybrid FC-Battery drive system for electric vehicles

The paper presents the dynamic modeling and coordinated control strategy for an integrated Electric Vehicle drive scheme using Fuel Cell (FC) and Battery back up . The integrated DC drive Scheme is fully stabilized using a novel FACTS based green filter compensator that ensures a fully stabilized Common-DC Bus voltage with reduced inrush current conditions under source and load excursions. The Fuel Cell and Battery are utilized efficiently using the error driven multi loop control strategy. The dynamic Filter Compensator Scheme is validated using the Modified Tri-loop PID controller developed by the Second Author to control the DC-DC converter and Green Power Filter Compensator (GPFC). The paper presents the validation of the multi loop Modified PID controller for the Hybrid FC and Battery E V powered four-wheel DC drive using Permanent Magnet DC (PMDC) motors. The model includes DC drive and load nonlinearities in inertia (J) and viscous friction (B). A Tri-Loop dynamic error controller is used to regulate the motor inrush current and overloading conditions, in addition to speed dynamic reference tracking. A type (B) DC-DC converter is employed to control the power transfer from the Fuel Cell and Battery to the PMDC motor load. All Matlab-Simulink Digital Simulation Functional Models for the Fuel Cell, battery, DC-DC converter, PMDC motor, interface LC-Filters, and Controller Loops are fully modeled using MATLAB/SIMULINK/Sim-power Software Environment.