Abstract
Fuel cells (FC) are a clean energy source that are capable of powering a vehicle’s electrical energy requirements whilst providing zero operating emissions. In this study, a full-scaled computer model FC/supercapacitor (SC) hybrid has been developed to investigate the performance of the hybrid propulsion system under real-world performance conditions. A control strategy focused on maintaining a constant FC output at a user-defined value has been developed and applied to the FC/SC hybrid model. Driving cycles collected from a practical double-decker bus have been utilised to evaluate the developed model. It has been demonstrated that the proposed control strategy is capable of maintaining a constant and stable FC output while meeting a real world dynamic load. Based on the obtained results, a general strategy to identify the degree of hybridisation between the FC and the SC in a FC hybrid system has been developed and demonstrated.
Highlights
Proton exchange membrane fuel cells (PEMFC) are a clean energy source that are capable of generating electricity with zero harmful emission at the point of use
The fuel cells (FC) generate electrical power based on an electrochemical reaction, which is different from the combustion process of conventional internal combustion engines (ICE) [1,2]
This research shows the operation of an FC/SC hybrid propulsion system against actual city bus driving cycles using the computer model
Summary
Proton exchange membrane fuel cells (PEMFC) are a clean energy source that are capable of generating electricity with zero harmful emission at the point of use. The present paper reports on the developed and deceleration, that are expected to occur for a city driving bus The purpose of this is to reduce the control strategy and system configuration that has been assessed against real-world load degradation of the fuel that for results from transient cyclesthe have been profiles. This model canaims be to tested with further evaluate the developed stabilised FC output control strategy against significantly more real worlddynamic collected bus data, which effectively offers a solution for the FC/SC hybrid bus from a loads, such as frequent acceleration and deceleration, that are expected to occur for a city power system engineering point of is view.
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