Design and Control of Multi-Input Single-Output DC/DC Boost Converter for the Application of PEM Fuel Cell-Battery-Hybrid Energy System in Locomotives

This paper presents the design and hardware implementation of the pulse width modulation (PWM) control approaches for a multi-input single-output (MISO)-DC/DC Boost converter for the application of the proton exchange membrane fuel cell-battery-hybrid energy system (PEMFC-B-HES) in locomotives. The PWM control approaches aim to achieve the DC-bus voltage regulation and the load sharing control in accordance to the energy management strategy (EMS). The EMS is devised considering the PEMFC's durability constraint. The performances of the MISO converter and the PWM control approaches are tested for a practical drive cycle in MATLAB/SIMULINK and on developing an experimental setup of the MISO converter. Both the simulation and hardware results show that the PWM controlled MISO converter provides the desired performances.